Import testtools as well, required for subunit.

21 files changed, 3845 insertions, 0 deletions

diff --git a/lib/subunit/python/testtools/__init__.py b/lib/subunit/python/testtools/__init__.py
new file mode 100644
index 0000000000..0504d661d4
--- /dev/null
+++ b/lib/subunit/python/testtools/__init__.py
@@ -0,0 +1,58 @@
+# Copyright (c) 2008, 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Extensions to the standard Python unittest library."""
+
+__all__ = [
+    'clone_test_with_new_id',
+    'ConcurrentTestSuite',
+    'ExtendedToOriginalDecorator',
+    'iterate_tests',
+    'MultiTestResult',
+    'TestCase',
+    'TestResult',
+    'TextTestResult',
+    'RunTest',
+    'skip',
+    'skipIf',
+    'skipUnless',
+    'ThreadsafeForwardingResult',
+    ]
+
+from testtools.matchers import (
+    Matcher,
+    )
+from testtools.runtest import (
+    RunTest,
+    )
+from testtools.testcase import (
+    TestCase,
+    clone_test_with_new_id,
+    skip,
+    skipIf,
+    skipUnless,
+    )
+from testtools.testresult import (
+    ExtendedToOriginalDecorator,
+    MultiTestResult,
+    TestResult,
+    TextTestResult,
+    ThreadsafeForwardingResult,
+    )
+from testtools.testsuite import (
+    ConcurrentTestSuite,
+    )
+from testtools.utils import iterate_tests
+
+# same format as sys.version_info: "A tuple containing the five components of
+# the version number: major, minor, micro, releaselevel, and serial. All
+# values except releaselevel are integers; the release level is 'alpha',
+# 'beta', 'candidate', or 'final'. The version_info value corresponding to the
+# Python version 2.0 is (2, 0, 0, 'final', 0)."  Additionally we use a
+# releaselevel of 'dev' for unreleased under-development code.
+#
+# If the releaselevel is 'alpha' then the major/minor/micro components are not
+# established at this point, and setup.py will use a version of next-$(revno).
+# If the releaselevel is 'final', then the tarball will be major.minor.micro.
+# Otherwise it is major.minor.micro~$(revno).
+
+__version__ = (0, 9, 2, 'final', 0)
diff --git a/lib/subunit/python/testtools/content.py b/lib/subunit/python/testtools/content.py
new file mode 100644
index 0000000000..00c782347b
--- /dev/null
+++ b/lib/subunit/python/testtools/content.py
@@ -0,0 +1,91 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Content - a MIME-like Content object."""
+
+import codecs
+from unittest import TestResult
+
+from testtools.content_type import ContentType
+from testtools.utils import _b
+
+
+class Content(object):
+    """A MIME-like Content object.
+
+    Content objects can be serialised to bytes using the iter_bytes method.
+    If the Content-Type is recognised by other code, they are welcome to
+    look for richer contents that mere byte serialisation - for example in
+    memory object graphs etc. However, such code MUST be prepared to receive
+    a generic Content object that has been reconstructed from a byte stream.
+
+    :ivar content_type: The content type of this Content.
+    """
+
+    def __init__(self, content_type, get_bytes):
+        """Create a ContentType."""
+        if None in (content_type, get_bytes):
+            raise ValueError("None not permitted in %r, %r" % (
+                content_type, get_bytes))
+        self.content_type = content_type
+        self._get_bytes = get_bytes
+
+    def __eq__(self, other):
+        return (self.content_type == other.content_type and
+            ''.join(self.iter_bytes()) == ''.join(other.iter_bytes()))
+
+    def iter_bytes(self):
+        """Iterate over bytestrings of the serialised content."""
+        return self._get_bytes()
+
+    def iter_text(self):
+        """Iterate over the text of the serialised content.
+
+        This is only valid for text MIME types, and will use ISO-8859-1 if
+        no charset parameter is present in the MIME type. (This is somewhat
+        arbitrary, but consistent with RFC2617 3.7.1).
+
+        :raises: ValueError If the content type is not text/*.
+        """
+        if self.content_type.type != "text":
+            raise ValueError("Not a text type %r" % self.content_type)
+        return self._iter_text()
+
+    def _iter_text(self):
+        """Worker for iter_text - does the decoding."""
+        encoding = self.content_type.parameters.get('charset', 'ISO-8859-1')
+        try:
+            # 2.5+
+            decoder = codecs.getincrementaldecoder(encoding)()
+            for bytes in self.iter_bytes():
+                yield decoder.decode(bytes)
+            final = decoder.decode(_b(''), True)
+            if final:
+                yield final
+        except AttributeError:
+            # < 2.5
+            bytes = ''.join(self.iter_bytes())
+            yield bytes.decode(encoding)
+
+    def __repr__(self):
+        return "<Content type=%r, value=%r>" % (
+            self.content_type, ''.join(self.iter_bytes()))
+
+
+class TracebackContent(Content):
+    """Content object for tracebacks.
+
+    This adapts an exc_info tuple to the Content interface.
+    text/x-traceback;language=python is used for the mime type, in order to
+    provide room for other languages to format their tracebacks differently.
+    """
+
+    def __init__(self, err, test):
+        """Create a TracebackContent for err."""
+        if err is None:
+            raise ValueError("err may not be None")
+        content_type = ContentType('text', 'x-traceback',
+            {"language": "python", "charset": "utf8"})
+        self._result = TestResult()
+        value = self._result._exc_info_to_string(err, test)
+        super(TracebackContent, self).__init__(
+            content_type, lambda: [value.encode("utf8")])
diff --git a/lib/subunit/python/testtools/content_type.py b/lib/subunit/python/testtools/content_type.py
new file mode 100644
index 0000000000..e70fa76ec8
--- /dev/null
+++ b/lib/subunit/python/testtools/content_type.py
@@ -0,0 +1,30 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""ContentType - a MIME Content Type."""
+
+
+class ContentType(object):
+    """A content type from http://www.iana.org/assignments/media-types/
+
+    :ivar type: The primary type, e.g. "text" or "application"
+    :ivar subtype: The subtype, e.g. "plain" or "octet-stream"
+    :ivar parameters: A dict of additional parameters specific to the
+    content type.
+    """
+
+    def __init__(self, primary_type, sub_type, parameters=None):
+        """Create a ContentType."""
+        if None in (primary_type, sub_type):
+            raise ValueError("None not permitted in %r, %r" % (
+                primary_type, sub_type))
+        self.type = primary_type
+        self.subtype = sub_type
+        self.parameters = parameters or {}
+
+    def __eq__(self, other):
+        if type(other) != ContentType:
+            return False
+        return self.__dict__ == other.__dict__
+
+    def __repr__(self):
+        return "%s/%s params=%s" % (self.type, self.subtype, self.parameters)
diff --git a/lib/subunit/python/testtools/matchers.py b/lib/subunit/python/testtools/matchers.py
new file mode 100644
index 0000000000..947ef601b3
--- /dev/null
+++ b/lib/subunit/python/testtools/matchers.py
@@ -0,0 +1,169 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Matchers, a way to express complex assertions outside the testcase.
+
+Inspired by 'hamcrest'.
+
+Matcher provides the abstract API that all matchers need to implement.
+
+Bundled matchers are listed in __all__: a list can be obtained by running
+$ python -c 'import testtools.matchers; print testtools.matchers.__all__'
+"""
+
+__metaclass__ = type
+__all__ = [
+    'DocTestMatches',
+    'Equals',
+    'MatchesAny',
+    ]
+
+import doctest
+
+
+class Matcher:
+    """A pattern matcher.
+
+    A Matcher must implement match and __str__ to be used by
+    testtools.TestCase.assertThat. Matcher.match(thing) returns None when
+    thing is completely matched, and a Mismatch object otherwise.
+
+    Matchers can be useful outside of test cases, as they are simply a
+    pattern matching language expressed as objects.
+
+    testtools.matchers is inspired by hamcrest, but is pythonic rather than
+    a Java transcription.
+    """
+
+    def match(self, something):
+        """Return None if this matcher matches something, a Mismatch otherwise.
+        """
+        raise NotImplementedError(self.match)
+
+    def __str__(self):
+        """Get a sensible human representation of the matcher.
+
+        This should include the parameters given to the matcher and any
+        state that would affect the matches operation.
+        """
+        raise NotImplementedError(self.__str__)
+
+
+class Mismatch:
+    """An object describing a mismatch detected by a Matcher."""
+
+    def describe(self):
+        """Describe the mismatch.
+
+        This should be either a human-readable string or castable to a string.
+        """
+        raise NotImplementedError(self.describe_difference)
+
+
+class DocTestMatches:
+    """See if a string matches a doctest example."""
+
+    def __init__(self, example, flags=0):
+        """Create a DocTestMatches to match example.
+
+        :param example: The example to match e.g. 'foo bar baz'
+        :param flags: doctest comparison flags to match on. e.g.
+            doctest.ELLIPSIS.
+        """
+        if not example.endswith('\n'):
+            example += '\n'
+        self.want = example # required variable name by doctest.
+        self.flags = flags
+        self._checker = doctest.OutputChecker()
+
+    def __str__(self):
+        if self.flags:
+            flagstr = ", flags=%d" % self.flags
+        else:
+            flagstr = ""
+        return 'DocTestMatches(%r%s)' % (self.want, flagstr)
+
+    def _with_nl(self, actual):
+        result = str(actual)
+        if not result.endswith('\n'):
+            result += '\n'
+        return result
+
+    def match(self, actual):
+        with_nl = self._with_nl(actual)
+        if self._checker.check_output(self.want, with_nl, self.flags):
+            return None
+        return DocTestMismatch(self, with_nl)
+
+    def _describe_difference(self, with_nl):
+        return self._checker.output_difference(self, with_nl, self.flags)
+
+
+class DocTestMismatch:
+    """Mismatch object for DocTestMatches."""
+
+    def __init__(self, matcher, with_nl):
+        self.matcher = matcher
+        self.with_nl = with_nl
+
+    def describe(self):
+        return self.matcher._describe_difference(self.with_nl)
+
+
+class Equals:
+    """Matches if the items are equal."""
+
+    def __init__(self, expected):
+        self.expected = expected
+
+    def match(self, other):
+        if self.expected == other:
+            return None
+        return EqualsMismatch(self.expected, other)
+
+    def __str__(self):
+        return "Equals(%r)" % self.expected
+
+
+class EqualsMismatch:
+    """Two things differed."""
+
+    def __init__(self, expected, other):
+        self.expected = expected
+        self.other = other
+
+    def describe(self):
+        return "%r != %r" % (self.expected, self.other)
+
+
+class MatchesAny:
+    """Matches if any of the matchers it is created with match."""
+
+    def __init__(self, *matchers):
+        self.matchers = matchers
+
+    def match(self, matchee):
+        results = []
+        for matcher in self.matchers:
+            mismatch = matcher.match(matchee)
+            if mismatch is None:
+                return None
+            results.append(mismatch)
+        return MismatchesAll(results)
+
+    def __str__(self):
+        return "MatchesAny(%s)" % ', '.join([
+            str(matcher) for matcher in self.matchers])
+
+
+class MismatchesAll:
+    """A mismatch with many child mismatches."""
+
+    def __init__(self, mismatches):
+        self.mismatches = mismatches
+
+    def describe(self):
+        descriptions = ["Differences: ["]
+        for mismatch in self.mismatches:
+            descriptions.append(mismatch.describe())
+        descriptions.append("]\n")
+        return '\n'.join(descriptions)
diff --git a/lib/subunit/python/testtools/run.py b/lib/subunit/python/testtools/run.py
new file mode 100755
index 0000000000..c4f461ecfb
--- /dev/null
+++ b/lib/subunit/python/testtools/run.py
@@ -0,0 +1,39 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""python -m testtools.run testspec [testspec...]
+
+Run some tests with the testtools extended API.
+
+For instance, to run the testtools test suite.
+ $ python -m testtools.run testtools.tests.test_suite
+"""
+
+import sys
+
+from testtools.tests import test_suite
+from testtools import TextTestResult
+
+
+class TestToolsTestRunner(object):
+    """ A thunk object to support unittest.TestProgram."""
+
+    def run(self, test):
+        "Run the given test case or test suite."
+        result = TextTestResult(sys.stdout)
+        result.startTestRun()
+        try:
+            return test.run(result)
+        finally:
+            result.stopTestRun()
+
+
+if __name__ == '__main__':
+    import optparse
+    from unittest import TestProgram
+    parser = optparse.OptionParser(__doc__)
+    args = parser.parse_args()[1]
+    if not args:
+        parser.error("No testspecs given.")
+    runner = TestToolsTestRunner()
+    program = TestProgram(module=None, argv=[sys.argv[0]] + args,
+        testRunner=runner)
diff --git a/lib/subunit/python/testtools/runtest.py b/lib/subunit/python/testtools/runtest.py
new file mode 100644
index 0000000000..053e2205a7
--- /dev/null
+++ b/lib/subunit/python/testtools/runtest.py
@@ -0,0 +1,142 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Individual test case execution."""
+
+__metaclass__ = type
+__all__ = [
+    'RunTest',
+    ]
+
+import sys
+
+from testtools.testresult import ExtendedToOriginalDecorator
+
+
+class RunTest:
+    """An object to run a test.
+
+    RunTest objects are used to implement the internal logic involved in
+    running a test. TestCase.__init__ stores _RunTest as the class of RunTest
+    to execute.  Passing the runTest= parameter to TestCase.__init__ allows a
+    different RunTest class to be used to execute the test.
+
+    Subclassing or replacing RunTest can be useful to add functionality to the
+    way that tests are run in a given project.
+
+    :ivar case: The test case that is to be run.
+    :ivar result: The result object a case is reporting to.
+    :ivar handlers: A list of (ExceptionClass->handler code) for exceptions
+        that should be caught if raised from the user code. Exceptions that
+        are caught are checked against this list in first to last order.
+        There is a catchall of Exception at the end of the list, so to add
+        a new exception to the list, insert it at the front (which ensures that
+        it will be checked before any existing base classes in the list. If you
+        add multiple exceptions some of which are subclasses of each other, add
+        the most specific exceptions last (so they come before their parent
+        classes in the list).
+    :ivar exception_caught: An object returned when _run_user catches an
+        exception.
+    """
+
+    def __init__(self, case, handlers=None):
+        """Create a RunTest to run a case.
+
+        :param case: A testtools.TestCase test case object.
+        :param handlers: Exception handlers for this RunTest. These are stored
+            in self.handlers and can be modified later if needed.
+        """
+        self.case = case
+        self.handlers = handlers or []
+        self.exception_caught = object()
+
+    def run(self, result=None):
+        """Run self.case reporting activity to result.
+
+        :param result: Optional testtools.TestResult to report activity to.
+        :return: The result object the test was run against.
+        """
+        if result is None:
+            actual_result = self.case.defaultTestResult()
+            actual_result.startTestRun()
+        else:
+            actual_result = result
+        try:
+            return self._run_one(actual_result)
+        finally:
+            if result is None:
+                actual_result.stopTestRun()
+
+    def _run_one(self, result):
+        """Run one test reporting to result.
+
+        :param result: A testtools.TestResult to report activity to.
+            This result object is decorated with an ExtendedToOriginalDecorator
+            to ensure that the latest TestResult API can be used with
+            confidence by client code.
+        :return: The result object the test was run against.
+        """
+        return self._run_prepared_result(ExtendedToOriginalDecorator(result))
+
+    def _run_prepared_result(self, result):
+        """Run one test reporting to result.
+
+        :param result: A testtools.TestResult to report activity to.
+        :return: The result object the test was run against.
+        """
+        result.startTest(self.case)
+        self.result = result
+        try:
+            self._run_core()
+        finally:
+            result.stopTest(self.case)
+        return result
+
+    def _run_core(self):
+        """Run the user supplied test code."""
+        if self.exception_caught == self._run_user(self.case._run_setup,
+            self.result):
+            # Don't run the test method if we failed getting here.
+            self.case._runCleanups(self.result)
+            return
+        # Run everything from here on in. If any of the methods raise an
+        # exception we'll have failed.
+        failed = False
+        try:
+            if self.exception_caught == self._run_user(
+                self.case._run_test_method, self.result):
+                failed = True
+        finally:
+            try:
+                if self.exception_caught == self._run_user(
+                    self.case._run_teardown, self.result):
+                    failed = True
+            finally:
+                try:
+                    if not self._run_user(
+                        self.case._runCleanups, self.result):
+                        failed = True
+                finally:
+                    if not failed:
+                        self.result.addSuccess(self.case,
+                            details=self.case.getDetails())
+
+    def _run_user(self, fn, *args):
+        """Run a user supplied function.
+
+        Exceptions are processed by self.handlers.
+        """
+        try:
+            return fn(*args)
+        except KeyboardInterrupt:
+            raise
+        except Exception:
+            # Note that bare exceptions are not caught, so raised strings will
+            # escape: but they are deprecated anyway.
+            exc_info = sys.exc_info()
+            e = exc_info[1]
+            for exc_class, handler in self.handlers:
+                self.case.onException(exc_info)
+                if isinstance(e, exc_class):
+                    handler(self.case, self.result, e)
+                    return self.exception_caught
+            raise e
diff --git a/lib/subunit/python/testtools/testcase.py b/lib/subunit/python/testtools/testcase.py
new file mode 100644
index 0000000000..a1d822ed47
--- /dev/null
+++ b/lib/subunit/python/testtools/testcase.py
@@ -0,0 +1,444 @@
+# Copyright (c) 2008, 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Test case related stuff."""
+
+__metaclass__ = type
+__all__ = [
+    'clone_test_with_new_id',
+    'TestCase',
+    'skip',
+    'skipIf',
+    'skipUnless',
+    ]
+
+import copy
+try:
+    from functools import wraps
+except ImportError:
+    wraps = None
+import itertools
+import sys
+import types
+import unittest
+
+from testtools import content
+from testtools.runtest import RunTest
+from testtools.testresult import TestResult
+from testtools.utils import advance_iterator
+
+
+try:
+    # Try to use the python2.7 SkipTest exception for signalling skips.
+    from unittest.case import SkipTest as TestSkipped
+except ImportError:
+    class TestSkipped(Exception):
+        """Raised within TestCase.run() when a test is skipped."""
+
+
+try:
+    # Try to use the same exceptions python 2.7 does.
+    from unittest.case import _ExpectedFailure, _UnexpectedSuccess
+except ImportError:
+    # Oops, not available, make our own.
+    class _UnexpectedSuccess(Exception):
+        """An unexpected success was raised.
+
+        Note that this exception is private plumbing in testtools' testcase
+        module.
+        """
+
+    class _ExpectedFailure(Exception):
+        """An expected failure occured.
+
+        Note that this exception is private plumbing in testtools' testcase
+        module.
+        """
+
+
+class TestCase(unittest.TestCase):
+    """Extensions to the basic TestCase.
+
+    :ivar exception_handlers: Exceptions to catch from setUp, runTest and
+        tearDown. This list is able to be modified at any time and consists of
+        (exception_class, handler(case, result, exception_value)) pairs.
+    """
+
+    skipException = TestSkipped
+
+    def __init__(self, *args, **kwargs):
+        """Construct a TestCase.
+
+        :param testMethod: The name of the method to run.
+        :param runTest: Optional class to use to execute the test. If not
+            supplied testtools.runtest.RunTest is used. The instance to be
+            used is created when run() is invoked, so will be fresh each time.
+        """
+        unittest.TestCase.__init__(self, *args, **kwargs)
+        self._cleanups = []
+        self._unique_id_gen = itertools.count(1)
+        self.__setup_called = False
+        self.__teardown_called = False
+        self.__details = {}
+        self.__RunTest = kwargs.get('runTest', RunTest)
+        self.__exception_handlers = []
+        self.exception_handlers = [
+            (self.skipException, self._report_skip),
+            (self.failureException, self._report_failure),
+            (_ExpectedFailure, self._report_expected_failure),
+            (_UnexpectedSuccess, self._report_unexpected_success),
+            (Exception, self._report_error),
+            ]
+
+    def __eq__(self, other):
+        eq = getattr(unittest.TestCase, '__eq__', None)
+        if eq is not None and not unittest.TestCase.__eq__(self, other):
+            return False
+        return self.__dict__ == other.__dict__
+
+    def __repr__(self):
+        # We add id to the repr because it makes testing testtools easier.
+        return "<%s id=0x%0x>" % (self.id(), id(self))
+
+    def addDetail(self, name, content_object):
+        """Add a detail to be reported with this test's outcome.
+
+        For more details see pydoc testtools.TestResult.
+
+        :param name: The name to give this detail.
+        :param content_object: The content object for this detail. See
+            testtools.content for more detail.
+        """
+        self.__details[name] = content_object
+
+    def getDetails(self):
+        """Get the details dict that will be reported with this test's outcome.
+
+        For more details see pydoc testtools.TestResult.
+        """
+        return self.__details
+
+    def shortDescription(self):
+        return self.id()
+
+    def skip(self, reason):
+        """Cause this test to be skipped.
+
+        This raises self.skipException(reason). skipException is raised
+        to permit a skip to be triggered at any point (during setUp or the
+        testMethod itself). The run() method catches skipException and
+        translates that into a call to the result objects addSkip method.
+
+        :param reason: The reason why the test is being skipped. This must
+            support being cast into a unicode string for reporting.
+        """
+        raise self.skipException(reason)
+
+    def _formatTypes(self, classOrIterable):
+        """Format a class or a bunch of classes for display in an error."""
+        className = getattr(classOrIterable, '__name__', None)
+        if className is None:
+            className = ', '.join(klass.__name__ for klass in classOrIterable)
+        return className
+
+    def _runCleanups(self, result):
+        """Run the cleanups that have been added with addCleanup.
+
+        See the docstring for addCleanup for more information.
+
+        Returns True if all cleanups ran without error, False otherwise.
+        """
+        ok = True
+        while self._cleanups:
+            function, arguments, keywordArguments = self._cleanups.pop()
+            try:
+                function(*arguments, **keywordArguments)
+            except KeyboardInterrupt:
+                raise
+            except:
+                self._report_error(self, result, None)
+                ok = False
+        return ok
+
+    def addCleanup(self, function, *arguments, **keywordArguments):
+        """Add a cleanup function to be called after tearDown.
+
+        Functions added with addCleanup will be called in reverse order of
+        adding after the test method and before tearDown.
+
+        If a function added with addCleanup raises an exception, the error
+        will be recorded as a test error, and the next cleanup will then be
+        run.
+
+        Cleanup functions are always called before a test finishes running,
+        even if setUp is aborted by an exception.
+        """
+        self._cleanups.append((function, arguments, keywordArguments))
+
+    def addOnException(self, handler):
+        """Add a handler to be called when an exception occurs in test code.
+
+        This handler cannot affect what result methods are called, and is
+        called before any outcome is called on the result object. An example
+        use for it is to add some diagnostic state to the test details dict
+        which is expensive to calculate and not interesting for reporting in
+        the success case.
+
+        Handlers are called before the outcome (such as addFailure) that
+        the exception has caused.
+
+        Handlers are called in first-added, first-called order, and if they
+        raise an exception, that will propogate out of the test running
+        machinery, halting test processing. As a result, do not call code that
+        may unreasonably fail.
+        """
+        self.__exception_handlers.append(handler)
+
+    def _add_reason(self, reason):
+        self.addDetail('reason', content.Content(
+            content.ContentType('text', 'plain'),
+            lambda: [reason.encode('utf8')]))
+
+    def assertIn(self, needle, haystack):
+        """Assert that needle is in haystack."""
+        self.assertTrue(
+            needle in haystack, '%r not in %r' % (needle, haystack))
+
+    def assertIs(self, expected, observed):
+        """Assert that `expected` is `observed`."""
+        self.assertTrue(
+            expected is observed, '%r is not %r' % (expected, observed))
+
+    def assertIsNot(self, expected, observed):
+        """Assert that `expected` is not `observed`."""
+        self.assertTrue(
+            expected is not observed, '%r is %r' % (expected, observed))
+
+    def assertNotIn(self, needle, haystack):
+        """Assert that needle is not in haystack."""
+        self.assertTrue(
+            needle not in haystack, '%r in %r' % (needle, haystack))
+
+    def assertIsInstance(self, obj, klass):
+        self.assertTrue(
+            isinstance(obj, klass),
+            '%r is not an instance of %s' % (obj, self._formatTypes(klass)))
+
+    def assertRaises(self, excClass, callableObj, *args, **kwargs):
+        """Fail unless an exception of class excClass is thrown
+           by callableObj when invoked with arguments args and keyword
+           arguments kwargs. If a different type of exception is
+           thrown, it will not be caught, and the test case will be
+           deemed to have suffered an error, exactly as for an
+           unexpected exception.
+        """
+        try:
+            ret = callableObj(*args, **kwargs)
+        except excClass:
+            return sys.exc_info()[1]
+        else:
+            excName = self._formatTypes(excClass)
+            self.fail("%s not raised, %r returned instead." % (excName, ret))
+    failUnlessRaises = assertRaises
+
+    def assertThat(self, matchee, matcher):
+        """Assert that matchee is matched by matcher.
+
+        :param matchee: An object to match with matcher.
+        :param matcher: An object meeting the testtools.Matcher protocol.
+        :raises self.failureException: When matcher does not match thing.
+        """
+        mismatch = matcher.match(matchee)
+        if not mismatch:
+            return
+        self.fail('Match failed. Matchee: "%s"\nMatcher: %s\nDifference: %s\n'
+            % (matchee, matcher, mismatch.describe()))
+
+    def defaultTestResult(self):
+        return TestResult()
+
+    def expectFailure(self, reason, predicate, *args, **kwargs):
+        """Check that a test fails in a particular way.
+
+        If the test fails in the expected way, a KnownFailure is caused. If it
+        succeeds an UnexpectedSuccess is caused.
+
+        The expected use of expectFailure is as a barrier at the point in a
+        test where the test would fail. For example:
+        >>> def test_foo(self):
+        >>>    self.expectFailure("1 should be 0", self.assertNotEqual, 1, 0)
+        >>>    self.assertEqual(1, 0)
+
+        If in the future 1 were to equal 0, the expectFailure call can simply
+        be removed. This separation preserves the original intent of the test
+        while it is in the expectFailure mode.
+        """
+        self._add_reason(reason)
+        try:
+            predicate(*args, **kwargs)
+        except self.failureException:
+            exc_info = sys.exc_info()
+            self.addDetail('traceback',
+                content.TracebackContent(exc_info, self))
+            raise _ExpectedFailure(exc_info)
+        else:
+            raise _UnexpectedSuccess(reason)
+
+    def getUniqueInteger(self):
+        """Get an integer unique to this test.
+
+        Returns an integer that is guaranteed to be unique to this instance.
+        Use this when you need an arbitrary integer in your test, or as a
+        helper for custom anonymous factory methods.
+        """
+        return advance_iterator(self._unique_id_gen)
+
+    def getUniqueString(self, prefix=None):
+        """Get a string unique to this test.
+
+        Returns a string that is guaranteed to be unique to this instance. Use
+        this when you need an arbitrary string in your test, or as a helper
+        for custom anonymous factory methods.
+
+        :param prefix: The prefix of the string. If not provided, defaults
+            to the id of the tests.
+        :return: A bytestring of '<prefix>-<unique_int>'.
+        """
+        if prefix is None:
+            prefix = self.id()
+        return '%s-%d' % (prefix, self.getUniqueInteger())
+
+    def onException(self, exc_info):
+        """Called when an exception propogates from test code.
+
+        :seealso addOnException:
+        """
+        for handler in self.__exception_handlers:
+            handler(exc_info)
+
+    @staticmethod
+    def _report_error(self, result, err):
+        self._report_traceback()
+        result.addError(self, details=self.getDetails())
+
+    @staticmethod
+    def _report_expected_failure(self, result, err):
+        result.addExpectedFailure(self, details=self.getDetails())
+
+    @staticmethod
+    def _report_failure(self, result, err):
+        self._report_traceback()
+        result.addFailure(self, details=self.getDetails())
+
+    @staticmethod
+    def _report_skip(self, result, err):
+        if err.args:
+            reason = err.args[0]
+        else:
+            reason = "no reason given."
+        self._add_reason(reason)
+        result.addSkip(self, details=self.getDetails())
+
+    def _report_traceback(self):
+        self.addDetail('traceback',
+            content.TracebackContent(sys.exc_info(), self))
+
+    @staticmethod
+    def _report_unexpected_success(self, result, err):
+        result.addUnexpectedSuccess(self, details=self.getDetails())
+
+    def run(self, result=None):
+        return self.__RunTest(self, self.exception_handlers).run(result)
+
+    def _run_setup(self, result):
+        """Run the setUp function for this test.
+
+        :param result: A testtools.TestResult to report activity to.
+        :raises ValueError: If the base class setUp is not called, a
+            ValueError is raised.
+        """
+        self.setUp()
+        if not self.__setup_called:
+            raise ValueError("setUp was not called")
+
+    def _run_teardown(self, result):
+        """Run the tearDown function for this test.
+
+        :param result: A testtools.TestResult to report activity to.
+        :raises ValueError: If the base class tearDown is not called, a
+            ValueError is raised.
+        """
+        self.tearDown()
+        if not self.__teardown_called:
+            raise ValueError("teardown was not called")
+
+    def _run_test_method(self, result):
+        """Run the test method for this test.
+
+        :param result: A testtools.TestResult to report activity to.
+        :return: None.
+        """
+        absent_attr = object()
+        # Python 2.5+
+        method_name = getattr(self, '_testMethodName', absent_attr)
+        if method_name is absent_attr:
+            # Python 2.4
+            method_name = getattr(self, '_TestCase__testMethodName')
+        testMethod = getattr(self, method_name)
+        testMethod()
+
+    def setUp(self):
+        unittest.TestCase.setUp(self)
+        self.__setup_called = True
+
+    def tearDown(self):
+        unittest.TestCase.tearDown(self)
+        self.__teardown_called = True
+
+
+# Python 2.4 did not know how to deep copy functions.
+if types.FunctionType not in copy._deepcopy_dispatch:
+    copy._deepcopy_dispatch[types.FunctionType] = copy._deepcopy_atomic
+
+
+def clone_test_with_new_id(test, new_id):
+    """Copy a TestCase, and give the copied test a new id."""
+    newTest = copy.deepcopy(test)
+    newTest.id = lambda: new_id
+    return newTest
+
+
+def skip(reason):
+    """A decorator to skip unit tests.
+
+    This is just syntactic sugar so users don't have to change any of their
+    unit tests in order to migrate to python 2.7, which provides the
+    @unittest.skip decorator.
+    """
+    def decorator(test_item):
+        if wraps is not None:
+            @wraps(test_item)
+            def skip_wrapper(*args, **kwargs):
+                raise TestCase.skipException(reason)
+        else:
+            def skip_wrapper(test_item):
+                test_item.skip(reason)
+        return skip_wrapper
+    return decorator
+
+
+def skipIf(condition, reason):
+    """Skip a test if the condition is true."""
+    if condition:
+        return skip(reason)
+    def _id(obj):
+        return obj
+    return _id
+
+
+def skipUnless(condition, reason):
+    """Skip a test unless the condition is true."""
+    if not condition:
+        return skip(reason)
+    def _id(obj):
+        return obj
+    return _id
diff --git a/lib/subunit/python/testtools/testresult/__init__.py b/lib/subunit/python/testtools/testresult/__init__.py
new file mode 100644
index 0000000000..2ee3d25293
--- /dev/null
+++ b/lib/subunit/python/testtools/testresult/__init__.py
@@ -0,0 +1,19 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Test result objects."""
+
+__all__ = [
+    'ExtendedToOriginalDecorator',
+    'MultiTestResult',
+    'TestResult',
+    'TextTestResult',
+    'ThreadsafeForwardingResult',
+    ]
+
+from real import (
+    ExtendedToOriginalDecorator,
+    MultiTestResult,
+    TestResult,
+    TextTestResult,
+    ThreadsafeForwardingResult,
+    )
diff --git a/lib/subunit/python/testtools/testresult/doubles.py b/lib/subunit/python/testtools/testresult/doubles.py
new file mode 100644
index 0000000000..d231c919c2
--- /dev/null
+++ b/lib/subunit/python/testtools/testresult/doubles.py
@@ -0,0 +1,95 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Doubles of test result objects, useful for testing unittest code."""
+
+__all__ = [
+    'Python26TestResult',
+    'Python27TestResult',
+    'ExtendedTestResult',
+    ]
+
+
+class LoggingBase(object):
+    """Basic support for logging of results."""
+
+    def __init__(self):
+        self._events = []
+        self.shouldStop = False
+
+
+class Python26TestResult(LoggingBase):
+    """A precisely python 2.6 like test result, that logs."""
+
+    def addError(self, test, err):
+        self._events.append(('addError', test, err))
+
+    def addFailure(self, test, err):
+        self._events.append(('addFailure', test, err))
+
+    def addSuccess(self, test):
+        self._events.append(('addSuccess', test))
+
+    def startTest(self, test):
+        self._events.append(('startTest', test))
+
+    def stop(self):
+        self.shouldStop = True
+
+    def stopTest(self, test):
+        self._events.append(('stopTest', test))
+
+
+class Python27TestResult(Python26TestResult):
+    """A precisely python 2.7 like test result, that logs."""
+
+    def addExpectedFailure(self, test, err):
+        self._events.append(('addExpectedFailure', test, err))
+
+    def addSkip(self, test, reason):
+        self._events.append(('addSkip', test, reason))
+
+    def addUnexpectedSuccess(self, test):
+        self._events.append(('addUnexpectedSuccess', test))
+
+    def startTestRun(self):
+        self._events.append(('startTestRun',))
+
+    def stopTestRun(self):
+        self._events.append(('stopTestRun',))
+
+
+class ExtendedTestResult(Python27TestResult):
+    """A test result like the proposed extended unittest result API."""
+
+    def addError(self, test, err=None, details=None):
+        self._events.append(('addError', test, err or details))
+
+    def addFailure(self, test, err=None, details=None):
+        self._events.append(('addFailure', test, err or details))
+
+    def addExpectedFailure(self, test, err=None, details=None):
+        self._events.append(('addExpectedFailure', test, err or details))
+
+    def addSkip(self, test, reason=None, details=None):
+        self._events.append(('addSkip', test, reason or details))
+
+    def addSuccess(self, test, details=None):
+        if details:
+            self._events.append(('addSuccess', test, details))
+        else:
+            self._events.append(('addSuccess', test))
+
+    def addUnexpectedSuccess(self, test, details=None):
+        if details is not None:
+            self._events.append(('addUnexpectedSuccess', test, details))
+        else:
+            self._events.append(('addUnexpectedSuccess', test))
+
+    def progress(self, offset, whence):
+        self._events.append(('progress', offset, whence))
+
+    def tags(self, new_tags, gone_tags):
+        self._events.append(('tags', new_tags, gone_tags))
+
+    def time(self, time):
+        self._events.append(('time', time))
diff --git a/lib/subunit/python/testtools/testresult/real.py b/lib/subunit/python/testtools/testresult/real.py
new file mode 100644
index 0000000000..8c8a3edd6e
--- /dev/null
+++ b/lib/subunit/python/testtools/testresult/real.py
@@ -0,0 +1,540 @@
+# Copyright (c) 2008 Jonathan M. Lange. See LICENSE for details.
+
+"""Test results and related things."""
+
+__metaclass__ = type
+__all__ = [
+    'ExtendedToOriginalDecorator',
+    'MultiTestResult',
+    'TestResult',
+    'ThreadsafeForwardingResult',
+    ]
+
+import datetime
+import unittest
+
+
+class TestResult(unittest.TestResult):
+    """Subclass of unittest.TestResult extending the protocol for flexability.
+
+    This test result supports an experimental protocol for providing additional
+    data to in test outcomes. All the outcome methods take an optional dict
+    'details'. If supplied any other detail parameters like 'err' or 'reason'
+    should not be provided. The details dict is a mapping from names to
+    MIME content objects (see testtools.content). This permits attaching
+    tracebacks, log files, or even large objects like databases that were
+    part of the test fixture. Until this API is accepted into upstream
+    Python it is considered experimental: it may be replaced at any point
+    by a newer version more in line with upstream Python. Compatibility would
+    be aimed for in this case, but may not be possible.
+
+    :ivar skip_reasons: A dict of skip-reasons -> list of tests. See addSkip.
+    """
+
+    def __init__(self):
+        super(TestResult, self).__init__()
+        self.skip_reasons = {}
+        self.__now = None
+        # -- Start: As per python 2.7 --
+        self.expectedFailures = []
+        self.unexpectedSuccesses = []
+        # -- End:   As per python 2.7 --
+
+    def addExpectedFailure(self, test, err=None, details=None):
+        """Called when a test has failed in an expected manner.
+
+        Like with addSuccess and addError, testStopped should still be called.
+
+        :param test: The test that has been skipped.
+        :param err: The exc_info of the error that was raised.
+        :return: None
+        """
+        # This is the python 2.7 implementation
+        self.expectedFailures.append(
+            (test, self._err_details_to_string(test, err, details)))
+
+    def addError(self, test, err=None, details=None):
+        """Called when an error has occurred. 'err' is a tuple of values as
+        returned by sys.exc_info().
+
+        :param details: Alternative way to supply details about the outcome.
+            see the class docstring for more information.
+        """
+        self.errors.append((test,
+            self._err_details_to_string(test, err, details)))
+
+    def addFailure(self, test, err=None, details=None):
+        """Called when an error has occurred. 'err' is a tuple of values as
+        returned by sys.exc_info().
+
+        :param details: Alternative way to supply details about the outcome.
+            see the class docstring for more information.
+        """
+        self.failures.append((test,
+            self._err_details_to_string(test, err, details)))
+
+    def addSkip(self, test, reason=None, details=None):
+        """Called when a test has been skipped rather than running.
+
+        Like with addSuccess and addError, testStopped should still be called.
+
+        This must be called by the TestCase. 'addError' and 'addFailure' will
+        not call addSkip, since they have no assumptions about the kind of
+        errors that a test can raise.
+
+        :param test: The test that has been skipped.
+        :param reason: The reason for the test being skipped. For instance,
+            u"pyGL is not available".
+        :param details: Alternative way to supply details about the outcome.
+            see the class docstring for more information.
+        :return: None
+        """
+        if reason is None:
+            reason = details.get('reason')
+            if reason is None:
+                reason = 'No reason given'
+            else:
+                reason = ''.join(reason.iter_text())
+        skip_list = self.skip_reasons.setdefault(reason, [])
+        skip_list.append(test)
+
+    def addSuccess(self, test, details=None):
+        """Called when a test succeeded."""
+
+    def addUnexpectedSuccess(self, test, details=None):
+        """Called when a test was expected to fail, but succeed."""
+        self.unexpectedSuccesses.append(test)
+
+    def _err_details_to_string(self, test, err=None, details=None):
+        """Convert an error in exc_info form or a contents dict to a string."""
+        if err is not None:
+            return self._exc_info_to_string(err, test)
+        return _details_to_str(details)
+
+    def _now(self):
+        """Return the current 'test time'.
+
+        If the time() method has not been called, this is equivalent to
+        datetime.now(), otherwise its the last supplied datestamp given to the
+        time() method.
+        """
+        if self.__now is None:
+            return datetime.datetime.now()
+        else:
+            return self.__now
+
+    def startTestRun(self):
+        """Called before a test run starts.
+
+        New in python 2.7
+        """
+
+    def stopTestRun(self):
+        """Called after a test run completes
+
+        New in python 2.7
+        """
+
+    def time(self, a_datetime):
+        """Provide a timestamp to represent the current time.
+
+        This is useful when test activity is time delayed, or happening
+        concurrently and getting the system time between API calls will not
+        accurately represent the duration of tests (or the whole run).
+
+        Calling time() sets the datetime used by the TestResult object.
+        Time is permitted to go backwards when using this call.
+
+        :param a_datetime: A datetime.datetime object with TZ information or
+            None to reset the TestResult to gathering time from the system.
+        """
+        self.__now = a_datetime
+
+    def done(self):
+        """Called when the test runner is done.
+
+        deprecated in favour of stopTestRun.
+        """
+
+
+class MultiTestResult(TestResult):
+    """A test result that dispatches to many test results."""
+
+    def __init__(self, *results):
+        TestResult.__init__(self)
+        self._results = map(ExtendedToOriginalDecorator, results)
+
+    def _dispatch(self, message, *args, **kwargs):
+        for result in self._results:
+            getattr(result, message)(*args, **kwargs)
+
+    def startTest(self, test):
+        self._dispatch('startTest', test)
+
+    def stopTest(self, test):
+        self._dispatch('stopTest', test)
+
+    def addError(self, test, error=None, details=None):
+        self._dispatch('addError', test, error, details=details)
+
+    def addExpectedFailure(self, test, err=None, details=None):
+        self._dispatch('addExpectedFailure', test, err, details=details)
+
+    def addFailure(self, test, err=None, details=None):
+        self._dispatch('addFailure', test, err, details=details)
+
+    def addSkip(self, test, reason=None, details=None):
+        self._dispatch('addSkip', test, reason, details=details)
+
+    def addSuccess(self, test, details=None):
+        self._dispatch('addSuccess', test, details=details)
+
+    def addUnexpectedSuccess(self, test, details=None):
+        self._dispatch('addUnexpectedSuccess', test, details=details)
+
+    def startTestRun(self):
+        self._dispatch('startTestRun')
+
+    def stopTestRun(self):
+        self._dispatch('stopTestRun')
+
+    def done(self):
+        self._dispatch('done')
+
+
+class TextTestResult(TestResult):
+    """A TestResult which outputs activity to a text stream."""
+
+    def __init__(self, stream):
+        """Construct a TextTestResult writing to stream."""
+        super(TextTestResult, self).__init__()
+        self.stream = stream
+        self.sep1 = '=' * 70 + '\n'
+        self.sep2 = '-' * 70 + '\n'
+
+    def _delta_to_float(self, a_timedelta):
+        return (a_timedelta.days * 86400.0 + a_timedelta.seconds +
+            a_timedelta.microseconds / 1000000.0)
+
+    def _show_list(self, label, error_list):
+        for test, output in error_list:
+            self.stream.write(self.sep1)
+            self.stream.write("%s: %s\n" % (label, test.id()))
+            self.stream.write(self.sep2)
+            self.stream.write(output)
+
+    def startTestRun(self):
+        super(TextTestResult, self).startTestRun()
+        self.__start = self._now()
+        self.stream.write("Tests running...\n")
+
+    def stopTestRun(self):
+        if self.testsRun != 1:
+            plural = 's'
+        else:
+            plural = ''
+        stop = self._now()
+        self._show_list('ERROR', self.errors)
+        self._show_list('FAIL', self.failures)
+        self.stream.write("Ran %d test%s in %.3fs\n\n" %
+            (self.testsRun, plural,
+             self._delta_to_float(stop - self.__start)))
+        if self.wasSuccessful():
+            self.stream.write("OK\n")
+        else:
+            self.stream.write("FAILED (")
+            details = []
+            details.append("failures=%d" % (
+                len(self.failures) + len(self.errors)))
+            self.stream.write(", ".join(details))
+            self.stream.write(")\n")
+        super(TextTestResult, self).stopTestRun()
+
+
+class ThreadsafeForwardingResult(TestResult):
+    """A TestResult which ensures the target does not receive mixed up calls.
+
+    This is used when receiving test results from multiple sources, and batches
+    up all the activity for a single test into a thread-safe batch where all
+    other ThreadsafeForwardingResult objects sharing the same semaphore will be
+    locked out.
+
+    Typical use of ThreadsafeForwardingResult involves creating one
+    ThreadsafeForwardingResult per thread in a ConcurrentTestSuite. These
+    forward to the TestResult that the ConcurrentTestSuite run method was
+    called with.
+
+    target.done() is called once for each ThreadsafeForwardingResult that
+    forwards to the same target. If the target's done() takes special action,
+    care should be taken to accommodate this.
+    """
+
+    def __init__(self, target, semaphore):
+        """Create a ThreadsafeForwardingResult forwarding to target.
+
+        :param target: A TestResult.
+        :param semaphore: A threading.Semaphore with limit 1.
+        """
+        TestResult.__init__(self)
+        self.result = ExtendedToOriginalDecorator(target)
+        self.semaphore = semaphore
+
+    def addError(self, test, err=None, details=None):
+        self.semaphore.acquire()
+        try:
+            self.result.startTest(test)
+            self.result.addError(test, err, details=details)
+            self.result.stopTest(test)
+        finally:
+            self.semaphore.release()
+
+    def addExpectedFailure(self, test, err=None, details=None):
+        self.semaphore.acquire()
+        try:
+            self.result.startTest(test)
+            self.result.addExpectedFailure(test, err, details=details)
+            self.result.stopTest(test)
+        finally:
+            self.semaphore.release()
+
+    def addFailure(self, test, err=None, details=None):
+        self.semaphore.acquire()
+        try:
+            self.result.startTest(test)
+            self.result.addFailure(test, err, details=details)
+            self.result.stopTest(test)
+        finally:
+            self.semaphore.release()
+
+    def addSkip(self, test, reason=None, details=None):
+        self.semaphore.acquire()
+        try:
+            self.result.startTest(test)
+            self.result.addSkip(test, reason, details=details)
+            self.result.stopTest(test)
+        finally:
+            self.semaphore.release()
+
+    def addSuccess(self, test, details=None):
+        self.semaphore.acquire()
+        try:
+            self.result.startTest(test)
+            self.result.addSuccess(test, details=details)
+            self.result.stopTest(test)
+        finally:
+            self.semaphore.release()
+
+    def addUnexpectedSuccess(self, test, details=None):
+        self.semaphore.acquire()
+        try:
+            self.result.startTest(test)
+            self.result.addUnexpectedSuccess(test, details=details)
+            self.result.stopTest(test)
+        finally:
+            self.semaphore.release()
+
+    def startTestRun(self):
+        self.semaphore.acquire()
+        try:
+            self.result.startTestRun()
+        finally:
+            self.semaphore.release()
+
+    def stopTestRun(self):
+        self.semaphore.acquire()
+        try:
+            self.result.stopTestRun()
+        finally:
+            self.semaphore.release()
+
+    def done(self):
+        self.semaphore.acquire()
+        try:
+            self.result.done()
+        finally:
+            self.semaphore.release()
+
+
+class ExtendedToOriginalDecorator(object):
+    """Permit new TestResult API code to degrade gracefully with old results.
+
+    This decorates an existing TestResult and converts missing outcomes
+    such as addSkip to older outcomes such as addSuccess. It also supports
+    the extended details protocol. In all cases the most recent protocol
+    is attempted first, and fallbacks only occur when the decorated result
+    does not support the newer style of calling.
+    """
+
+    def __init__(self, decorated):
+        self.decorated = decorated
+
+    def __getattr__(self, name):
+        return getattr(self.decorated, name)
+
+    def addError(self, test, err=None, details=None):
+        self._check_args(err, details)
+        if details is not None:
+            try:
+                return self.decorated.addError(test, details=details)
+            except TypeError:
+                # have to convert
+                err = self._details_to_exc_info(details)
+        return self.decorated.addError(test, err)
+
+    def addExpectedFailure(self, test, err=None, details=None):
+        self._check_args(err, details)
+        addExpectedFailure = getattr(
+            self.decorated, 'addExpectedFailure', None)
+        if addExpectedFailure is None:
+            return self.addSuccess(test)
+        if details is not None:
+            try:
+                return addExpectedFailure(test, details=details)
+            except TypeError:
+                # have to convert
+                err = self._details_to_exc_info(details)
+        return addExpectedFailure(test, err)
+
+    def addFailure(self, test, err=None, details=None):
+        self._check_args(err, details)
+        if details is not None:
+            try:
+                return self.decorated.addFailure(test, details=details)
+            except TypeError:
+                # have to convert
+                err = self._details_to_exc_info(details)
+        return self.decorated.addFailure(test, err)
+
+    def addSkip(self, test, reason=None, details=None):
+        self._check_args(reason, details)
+        addSkip = getattr(self.decorated, 'addSkip', None)
+        if addSkip is None:
+            return self.decorated.addSuccess(test)
+        if details is not None:
+            try:
+                return addSkip(test, details=details)
+            except TypeError:
+                # have to convert
+                reason = _details_to_str(details)
+        return addSkip(test, reason)
+
+    def addUnexpectedSuccess(self, test, details=None):
+        outcome = getattr(self.decorated, 'addUnexpectedSuccess', None)
+        if outcome is None:
+            return self.decorated.addSuccess(test)
+        if details is not None:
+            try:
+                return outcome(test, details=details)
+            except TypeError:
+                pass
+        return outcome(test)
+
+    def addSuccess(self, test, details=None):
+        if details is not None:
+            try:
+                return self.decorated.addSuccess(test, details=details)
+            except TypeError:
+                pass
+        return self.decorated.addSuccess(test)
+
+    def _check_args(self, err, details):
+        param_count = 0
+        if err is not None:
+            param_count += 1
+        if details is not None:
+            param_count += 1
+        if param_count != 1:
+            raise ValueError("Must pass only one of err '%s' and details '%s"
+                % (err, details))
+
+    def _details_to_exc_info(self, details):
+        """Convert a details dict to an exc_info tuple."""
+        return (_StringException,
+            _StringException(_details_to_str(details)), None)
+
+    def done(self):
+        try:
+            return self.decorated.done()
+        except AttributeError:
+            return
+
+    def progress(self, offset, whence):
+        method = getattr(self.decorated, 'progress', None)
+        if method is None:
+            return
+        return method(offset, whence)
+
+    @property
+    def shouldStop(self):
+        return self.decorated.shouldStop
+
+    def startTest(self, test):
+        return self.decorated.startTest(test)
+
+    def startTestRun(self):
+        try:
+            return self.decorated.startTestRun()
+        except AttributeError:
+            return
+
+    def stop(self):
+        return self.decorated.stop()
+
+    def stopTest(self, test):
+        return self.decorated.stopTest(test)
+
+    def stopTestRun(self):
+        try:
+            return self.decorated.stopTestRun()
+        except AttributeError:
+            return
+
+    def tags(self, new_tags, gone_tags):
+        method = getattr(self.decorated, 'tags', None)
+        if method is None:
+            return
+        return method(new_tags, gone_tags)
+
+    def time(self, a_datetime):
+        method = getattr(self.decorated, 'time', None)
+        if method is None:
+            return
+        return method(a_datetime)
+
+    def wasSuccessful(self):
+        return self.decorated.wasSuccessful()
+
+
+class _StringException(Exception):
+    """An exception made from an arbitrary string."""
+
+    def __hash__(self):
+        return id(self)
+
+    def __str__(self):
+        """Stringify better than 2.x's default behaviour of ascii encoding."""
+        return self.args[0]
+
+    def __eq__(self, other):
+        try:
+            return self.args == other.args
+        except AttributeError:
+            return False
+
+
+def _details_to_str(details):
+    """Convert a details dict to a string."""
+    chars = []
+    # sorted is for testing, may want to remove that and use a dict
+    # subclass with defined order for items instead.
+    for key, content in sorted(details.items()):
+        if content.content_type.type != 'text':
+            chars.append('Binary content: %s\n' % key)
+            continue
+        chars.append('Text attachment: %s\n' % key)
+        chars.append('------------\n')
+        chars.extend(content.iter_text())
+        if not chars[-1].endswith('\n'):
+            chars.append('\n')
+        chars.append('------------\n')
+    return ''.join(chars)
diff --git a/lib/subunit/python/testtools/tests/__init__.py b/lib/subunit/python/testtools/tests/__init__.py
new file mode 100644
index 0000000000..e1d1148d5c
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/__init__.py
@@ -0,0 +1,28 @@
+# See README for copyright and licensing details.
+
+import unittest
+from testtools.tests import (
+    test_content,
+    test_content_type,
+    test_matchers,
+    test_runtest,
+    test_testtools,
+    test_testresult,
+    test_testsuite,
+    )
+
+
+def test_suite():
+    suites = []
+    modules = [
+        test_content,
+        test_content_type,
+        test_matchers,
+        test_runtest,
+        test_testresult,
+        test_testsuite,
+        test_testtools,
+        ]
+    for module in modules:
+        suites.append(getattr(module, 'test_suite')())
+    return unittest.TestSuite(suites)
diff --git a/lib/subunit/python/testtools/tests/helpers.py b/lib/subunit/python/testtools/tests/helpers.py
new file mode 100644
index 0000000000..c4cf10c736
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/helpers.py
@@ -0,0 +1,67 @@
+# Copyright (c) 2008 Jonathan M. Lange. See LICENSE for details.
+
+"""Helpers for tests."""
+
+import sys
+
+__metaclass__ = type
+__all__ = [
+    'LoggingResult',
+    ]
+
+from testtools import TestResult
+
+
+try:
+    raise Exception
+except Exception:
+    an_exc_info = sys.exc_info()
+
+# Deprecated: This classes attributes are somewhat non deterministic which
+# leads to hard to predict tests (because Python upstream are changing things.
+class LoggingResult(TestResult):
+    """TestResult that logs its event to a list."""
+
+    def __init__(self, log):
+        self._events = log
+        super(LoggingResult, self).__init__()
+
+    def startTest(self, test):
+        self._events.append(('startTest', test))
+        super(LoggingResult, self).startTest(test)
+
+    def stopTest(self, test):
+        self._events.append(('stopTest', test))
+        super(LoggingResult, self).stopTest(test)
+
+    def addFailure(self, test, error):
+        self._events.append(('addFailure', test, error))
+        super(LoggingResult, self).addFailure(test, error)
+
+    def addError(self, test, error):
+        self._events.append(('addError', test, error))
+        super(LoggingResult, self).addError(test, error)
+
+    def addSkip(self, test, reason):
+        self._events.append(('addSkip', test, reason))
+        super(LoggingResult, self).addSkip(test, reason)
+
+    def addSuccess(self, test):
+        self._events.append(('addSuccess', test))
+        super(LoggingResult, self).addSuccess(test)
+
+    def startTestRun(self):
+        self._events.append('startTestRun')
+        super(LoggingResult, self).startTestRun()
+
+    def stopTestRun(self):
+        self._events.append('stopTestRun')
+        super(LoggingResult, self).stopTestRun()
+
+    def done(self):
+        self._events.append('done')
+        super(LoggingResult, self).done()
+
+# Note, the following three classes are different to LoggingResult by
+# being fully defined exact matches rather than supersets.
+from testtools.testresult.doubles import *
diff --git a/lib/subunit/python/testtools/tests/test_content.py b/lib/subunit/python/testtools/tests/test_content.py
new file mode 100644
index 0000000000..1159362036
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/test_content.py
@@ -0,0 +1,72 @@
+# Copyright (c) 2008 Jonathan M. Lange. See LICENSE for details.
+
+import unittest
+from testtools.content import Content, TracebackContent
+from testtools.content_type import ContentType
+from testtools.utils import _u
+from testtools.tests.helpers import an_exc_info
+
+
+def test_suite():
+    from unittest import TestLoader
+    return TestLoader().loadTestsFromName(__name__)
+
+
+class TestContent(unittest.TestCase):
+
+    def test___init___None_errors(self):
+        self.assertRaises(ValueError, Content, None, None)
+        self.assertRaises(ValueError, Content, None, lambda: ["traceback"])
+        self.assertRaises(ValueError, Content,
+            ContentType("text", "traceback"), None)
+
+    def test___init___sets_ivars(self):
+        content_type = ContentType("foo", "bar")
+        content = Content(content_type, lambda: ["bytes"])
+        self.assertEqual(content_type, content.content_type)
+        self.assertEqual(["bytes"], list(content.iter_bytes()))
+
+    def test___eq__(self):
+        content_type = ContentType("foo", "bar")
+        content1 = Content(content_type, lambda: ["bytes"])
+        content2 = Content(content_type, lambda: ["bytes"])
+        content3 = Content(content_type, lambda: ["by", "tes"])
+        content4 = Content(content_type, lambda: ["by", "te"])
+        content5 = Content(ContentType("f", "b"), lambda: ["by", "tes"])
+        self.assertEqual(content1, content2)
+        self.assertEqual(content1, content3)
+        self.assertNotEqual(content1, content4)
+        self.assertNotEqual(content1, content5)
+
+    def test_iter_text_not_text_errors(self):
+        content_type = ContentType("foo", "bar")
+        content = Content(content_type, lambda: ["bytes"])
+        self.assertRaises(ValueError, content.iter_text)
+
+    def test_iter_text_decodes(self):
+        content_type = ContentType("text", "strange", {"charset": "utf8"})
+        content = Content(
+            content_type, lambda: [_u("bytes\xea").encode("utf8")])
+        self.assertEqual([_u("bytes\xea")], list(content.iter_text()))
+
+    def test_iter_text_default_charset_iso_8859_1(self):
+        content_type = ContentType("text", "strange")
+        text = _u("bytes\xea")
+        iso_version = text.encode("ISO-8859-1")
+        content = Content(content_type, lambda: [iso_version])
+        self.assertEqual([text], list(content.iter_text()))
+
+
+class TestTracebackContent(unittest.TestCase):
+
+    def test___init___None_errors(self):
+        self.assertRaises(ValueError, TracebackContent, None, None)
+
+    def test___init___sets_ivars(self):
+        content = TracebackContent(an_exc_info, self)
+        content_type = ContentType("text", "x-traceback",
+            {"language": "python", "charset": "utf8"})
+        self.assertEqual(content_type, content.content_type)
+        result = unittest.TestResult()
+        expected = result._exc_info_to_string(an_exc_info, self)
+        self.assertEqual(expected, ''.join(list(content.iter_text())))
diff --git a/lib/subunit/python/testtools/tests/test_content_type.py b/lib/subunit/python/testtools/tests/test_content_type.py
new file mode 100644
index 0000000000..dbefc21dec
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/test_content_type.py
@@ -0,0 +1,34 @@
+# Copyright (c) 2008 Jonathan M. Lange. See LICENSE for details.
+
+import unittest
+from testtools.content_type import ContentType
+
+
+def test_suite():
+    from unittest import TestLoader
+    return TestLoader().loadTestsFromName(__name__)
+
+
+class TestContentType(unittest.TestCase):
+
+    def test___init___None_errors(self):
+        self.assertRaises(ValueError, ContentType, None, None)
+        self.assertRaises(ValueError, ContentType, None, "traceback")
+        self.assertRaises(ValueError, ContentType, "text", None)
+
+    def test___init___sets_ivars(self):
+        content_type = ContentType("foo", "bar")
+        self.assertEqual("foo", content_type.type)
+        self.assertEqual("bar", content_type.subtype)
+        self.assertEqual({}, content_type.parameters)
+
+    def test___init___with_parameters(self):
+        content_type = ContentType("foo", "bar", {"quux":"thing"})
+        self.assertEqual({"quux":"thing"}, content_type.parameters)
+
+    def test___eq__(self):
+        content_type1 = ContentType("foo", "bar", {"quux":"thing"})
+        content_type2 = ContentType("foo", "bar", {"quux":"thing"})
+        content_type3 = ContentType("foo", "bar", {"quux":"thing2"})
+        self.assertTrue(content_type1.__eq__(content_type2))
+        self.assertFalse(content_type1.__eq__(content_type3))
diff --git a/lib/subunit/python/testtools/tests/test_matchers.py b/lib/subunit/python/testtools/tests/test_matchers.py
new file mode 100644
index 0000000000..a9f4b245eb
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/test_matchers.py
@@ -0,0 +1,113 @@
+# Copyright (c) 2008 Jonathan M. Lange. See LICENSE for details.
+
+"""Tests for matchers."""
+
+import doctest
+
+from testtools import (
+    Matcher, # check that Matcher is exposed at the top level for docs.
+    TestCase,
+    )
+from testtools.matchers import (
+    Equals,
+    DocTestMatches,
+    MatchesAny,
+    )
+
+
+class TestMatchersInterface:
+
+    def test_matches_match(self):
+        matcher = self.matches_matcher
+        matches = self.matches_matches
+        mismatches = self.matches_mismatches
+        for candidate in matches:
+            self.assertEqual(None, matcher.match(candidate))
+        for candidate in mismatches:
+            mismatch = matcher.match(candidate)
+            self.assertNotEqual(None, mismatch)
+            self.assertNotEqual(None, getattr(mismatch, 'describe', None))
+
+    def test__str__(self):
+        # [(expected, object to __str__)].
+        examples = self.str_examples
+        for expected, matcher in examples:
+            self.assertThat(matcher, DocTestMatches(expected))
+
+    def test_describe_difference(self):
+        # [(expected, matchee, matcher), ...]
+        examples = self.describe_examples
+        for difference, matchee, matcher in examples:
+            mismatch = matcher.match(matchee)
+            self.assertEqual(difference, mismatch.describe())
+
+
+class TestDocTestMatchesInterface(TestCase, TestMatchersInterface):
+
+    matches_matcher = DocTestMatches("Ran 1 test in ...s", doctest.ELLIPSIS)
+    matches_matches = ["Ran 1 test in 0.000s", "Ran 1 test in 1.234s"]
+    matches_mismatches = ["Ran 1 tests in 0.000s", "Ran 2 test in 0.000s"]
+
+    str_examples = [("DocTestMatches('Ran 1 test in ...s\\n')",
+        DocTestMatches("Ran 1 test in ...s")),
+        ("DocTestMatches('foo\\n', flags=8)", DocTestMatches("foo", flags=8)),
+        ]
+
+    describe_examples = [('Expected:\n    Ran 1 tests in ...s\nGot:\n'
+        '    Ran 1 test in 0.123s\n', "Ran 1 test in 0.123s",
+        DocTestMatches("Ran 1 tests in ...s", doctest.ELLIPSIS))]
+
+
+class TestDocTestMatchesSpecific(TestCase):
+
+    def test___init__simple(self):
+        matcher = DocTestMatches("foo")
+        self.assertEqual("foo\n", matcher.want)
+
+    def test___init__flags(self):
+        matcher = DocTestMatches("bar\n", doctest.ELLIPSIS)
+        self.assertEqual("bar\n", matcher.want)
+        self.assertEqual(doctest.ELLIPSIS, matcher.flags)
+
+
+class TestEqualsInterface(TestCase, TestMatchersInterface):
+
+    matches_matcher = Equals(1)
+    matches_matches = [1]
+    matches_mismatches = [2]
+
+    str_examples = [("Equals(1)", Equals(1)), ("Equals('1')", Equals('1'))]
+
+    describe_examples = [("1 != 2", 2, Equals(1))]
+
+
+class TestMatchersAnyInterface(TestCase, TestMatchersInterface):
+
+    matches_matcher = MatchesAny(DocTestMatches("1"), DocTestMatches("2"))
+    matches_matches = ["1", "2"]
+    matches_mismatches = ["3"]
+
+    str_examples = [(
+        "MatchesAny(DocTestMatches('1\\n'), DocTestMatches('2\\n'))",
+        MatchesAny(DocTestMatches("1"), DocTestMatches("2"))),
+        ]
+
+    describe_examples = [("""Differences: [
+Expected:
+    1
+Got:
+    3
+
+Expected:
+    2
+Got:
+    3
+
+]
+""",
+        "3", MatchesAny(DocTestMatches("1"), DocTestMatches("2")))]
+
+
+def test_suite():
+    from unittest import TestLoader
+    return TestLoader().loadTestsFromName(__name__)
diff --git a/lib/subunit/python/testtools/tests/test_runtest.py b/lib/subunit/python/testtools/tests/test_runtest.py
new file mode 100644
index 0000000000..5c46ad1784
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/test_runtest.py
@@ -0,0 +1,185 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Tests for the RunTest single test execution logic."""
+
+from testtools import (
+    ExtendedToOriginalDecorator,
+    RunTest,
+    TestCase,
+    TestResult,
+    )
+from testtools.tests.helpers import ExtendedTestResult
+
+
+class TestRunTest(TestCase):
+
+    def make_case(self):
+        class Case(TestCase):
+            def test(self):
+                pass
+        return Case('test')
+
+    def test___init___short(self):
+        run = RunTest("bar")
+        self.assertEqual("bar", run.case)
+        self.assertEqual([], run.handlers)
+
+    def test__init____handlers(self):
+        handlers = [("quux", "baz")]
+        run = RunTest("bar", handlers)
+        self.assertEqual(handlers, run.handlers)
+
+    def test_run_with_result(self):
+        # test.run passes result down to _run_test_method.
+        log = []
+        class Case(TestCase):
+            def _run_test_method(self, result):
+                log.append(result)
+        case = Case('_run_test_method')
+        run = RunTest(case, lambda x: log.append(x))
+        result = TestResult()
+        run.run(result)
+        self.assertEqual(1, len(log))
+        self.assertEqual(result, log[0].decorated)
+
+    def test_run_no_result_manages_new_result(self):
+        log = []
+        run = RunTest(self.make_case(), lambda x: log.append(x) or x)
+        result = run.run()
+        self.assertIsInstance(result.decorated, TestResult)
+
+    def test__run_core_called(self):
+        case = self.make_case()
+        log = []
+        run = RunTest(case, lambda x: x)
+        run._run_core = lambda: log.append('foo')
+        run.run()
+        self.assertEqual(['foo'], log)
+
+    def test__run_user_does_not_catch_keyboard(self):
+        case = self.make_case()
+        def raises():
+            raise KeyboardInterrupt("yo")
+        run = RunTest(case, None)
+        run.result = ExtendedTestResult()
+        self.assertRaises(KeyboardInterrupt, run._run_user, raises)
+        self.assertEqual([], run.result._events)
+
+    def test__run_user_calls_onException(self):
+        case = self.make_case()
+        log = []
+        def handler(exc_info):
+            log.append("got it")
+            self.assertEqual(3, len(exc_info))
+            self.assertIsInstance(exc_info[1], KeyError)
+            self.assertIs(KeyError, exc_info[0])
+        case.addOnException(handler)
+        e = KeyError('Yo')
+        def raises():
+            raise e
+        def log_exc(self, result, err):
+            log.append((result, err))
+        run = RunTest(case, [(KeyError, log_exc)])
+        run.result = ExtendedTestResult()
+        status = run._run_user(raises)
+        self.assertEqual(run.exception_caught, status)
+        self.assertEqual([], run.result._events)
+        self.assertEqual(["got it", (run.result, e)], log)
+
+    def test__run_user_can_catch_Exception(self):
+        case = self.make_case()
+        e = Exception('Yo')
+        def raises():
+            raise e
+        log = []
+        def log_exc(self, result, err):
+            log.append((result, err))
+        run = RunTest(case, [(Exception, log_exc)])
+        run.result = ExtendedTestResult()
+        status = run._run_user(raises)
+        self.assertEqual(run.exception_caught, status)
+        self.assertEqual([], run.result._events)
+        self.assertEqual([(run.result, e)], log)
+
+    def test__run_user_uncaught_Exception_raised(self):
+        case = self.make_case()
+        e = KeyError('Yo')
+        def raises():
+            raise e
+        log = []
+        def log_exc(self, result, err):
+            log.append((result, err))
+        run = RunTest(case, [(ValueError, log_exc)])
+        run.result = ExtendedTestResult()
+        self.assertRaises(KeyError, run._run_user, raises)
+        self.assertEqual([], run.result._events)
+        self.assertEqual([], log)
+
+    def test__run_user_uncaught_Exception_from_exception_handler_raised(self):
+        case = self.make_case()
+        def broken_handler(exc_info):
+            # ValueError because thats what we know how to catch - and must
+            # not.
+            raise ValueError('boo')
+        case.addOnException(broken_handler)
+        e = KeyError('Yo')
+        def raises():
+            raise e
+        log = []
+        def log_exc(self, result, err):
+            log.append((result, err))
+        run = RunTest(case, [(ValueError, log_exc)])
+        run.result = ExtendedTestResult()
+        self.assertRaises(ValueError, run._run_user, raises)
+        self.assertEqual([], run.result._events)
+        self.assertEqual([], log)
+
+    def test__run_user_returns_result(self):
+        case = self.make_case()
+        def returns():
+            return 1
+        run = RunTest(case)
+        run.result = ExtendedTestResult()
+        self.assertEqual(1, run._run_user(returns))
+        self.assertEqual([], run.result._events)
+
+    def test__run_one_decorates_result(self):
+        log = []
+        class Run(RunTest):
+            def _run_prepared_result(self, result):
+                log.append(result)
+                return result
+        run = Run(self.make_case(), lambda x: x)
+        result = run._run_one('foo')
+        self.assertEqual([result], log)
+        self.assertIsInstance(log[0], ExtendedToOriginalDecorator)
+        self.assertEqual('foo', result.decorated)
+
+    def test__run_prepared_result_calls_start_and_stop_test(self):
+        result = ExtendedTestResult()
+        case = self.make_case()
+        run = RunTest(case, lambda x: x)
+        run.run(result)
+        self.assertEqual([
+            ('startTest', case),
+            ('addSuccess', case),
+            ('stopTest', case),
+            ], result._events)
+
+    def test__run_prepared_result_calls_stop_test_always(self):
+        result = ExtendedTestResult()
+        case = self.make_case()
+        def inner():
+            raise Exception("foo")
+        run = RunTest(case, lambda x: x)
+        run._run_core = inner
+        self.assertRaises(Exception, run.run, result)
+        self.assertEqual([
+            ('startTest', case),
+            ('stopTest', case),
+            ], result._events)
+
+
+def test_suite():
+    from unittest import TestLoader
+    return TestLoader().loadTestsFromName(__name__)
diff --git a/lib/subunit/python/testtools/tests/test_testresult.py b/lib/subunit/python/testtools/tests/test_testresult.py
new file mode 100644
index 0000000000..df15b91244
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/test_testresult.py
@@ -0,0 +1,807 @@
+# Copyright (c) 2008 Jonathan M. Lange. See LICENSE for details.
+
+"""Test TestResults and related things."""
+
+__metaclass__ = type
+
+import datetime
+try:
+    from cStringIO import StringIO
+except ImportError:
+    from io import StringIO
+import doctest
+import sys
+import threading
+
+from testtools import (
+    ExtendedToOriginalDecorator,
+    MultiTestResult,
+    TestCase,
+    TestResult,
+    TextTestResult,
+    ThreadsafeForwardingResult,
+    testresult,
+    )
+from testtools.content import Content, ContentType
+from testtools.matchers import DocTestMatches
+from testtools.utils import _u, _b
+from testtools.tests.helpers import (
+    LoggingResult,
+    Python26TestResult,
+    Python27TestResult,
+    ExtendedTestResult,
+    an_exc_info
+    )
+
+
+class TestTestResultContract(TestCase):
+    """Tests for the contract of TestResults."""
+
+    def test_addExpectedFailure(self):
+        # Calling addExpectedFailure(test, exc_info) completes ok.
+        result = self.makeResult()
+        result.addExpectedFailure(self, an_exc_info)
+
+    def test_addExpectedFailure_details(self):
+        # Calling addExpectedFailure(test, details=xxx) completes ok.
+        result = self.makeResult()
+        result.addExpectedFailure(self, details={})
+
+    def test_addError_details(self):
+        # Calling addError(test, details=xxx) completes ok.
+        result = self.makeResult()
+        result.addError(self, details={})
+
+    def test_addFailure_details(self):
+        # Calling addFailure(test, details=xxx) completes ok.
+        result = self.makeResult()
+        result.addFailure(self, details={})
+
+    def test_addSkipped(self):
+        # Calling addSkip(test, reason) completes ok.
+        result = self.makeResult()
+        result.addSkip(self, _u("Skipped for some reason"))
+
+    def test_addSkipped_details(self):
+        # Calling addSkip(test, reason) completes ok.
+        result = self.makeResult()
+        result.addSkip(self, details={})
+
+    def test_addUnexpectedSuccess(self):
+        # Calling addUnexpectedSuccess(test) completes ok.
+        result = self.makeResult()
+        result.addUnexpectedSuccess(self)
+
+    def test_addUnexpectedSuccess_details(self):
+        # Calling addUnexpectedSuccess(test) completes ok.
+        result = self.makeResult()
+        result.addUnexpectedSuccess(self, details={})
+
+    def test_addSuccess_details(self):
+        # Calling addSuccess(test) completes ok.
+        result = self.makeResult()
+        result.addSuccess(self, details={})
+
+    def test_startStopTestRun(self):
+        # Calling startTestRun completes ok.
+        result = self.makeResult()
+        result.startTestRun()
+        result.stopTestRun()
+
+
+class TestTestResultContract(TestTestResultContract):
+
+    def makeResult(self):
+        return TestResult()
+
+
+class TestMultiTestresultContract(TestTestResultContract):
+
+    def makeResult(self):
+        return MultiTestResult(TestResult(), TestResult())
+
+
+class TestTextTestResultContract(TestTestResultContract):
+
+    def makeResult(self):
+        return TextTestResult(StringIO())
+
+
+class TestThreadSafeForwardingResultContract(TestTestResultContract):
+
+    def makeResult(self):
+        result_semaphore = threading.Semaphore(1)
+        target = TestResult()
+        return ThreadsafeForwardingResult(target, result_semaphore)
+
+
+class TestTestResult(TestCase):
+    """Tests for `TestResult`."""
+
+    def makeResult(self):
+        """Make an arbitrary result for testing."""
+        return TestResult()
+
+    def test_addSkipped(self):
+        # Calling addSkip on a TestResult records the test that was skipped in
+        # its skip_reasons dict.
+        result = self.makeResult()
+        result.addSkip(self, _u("Skipped for some reason"))
+        self.assertEqual({_u("Skipped for some reason"):[self]},
+            result.skip_reasons)
+        result.addSkip(self, _u("Skipped for some reason"))
+        self.assertEqual({_u("Skipped for some reason"):[self, self]},
+            result.skip_reasons)
+        result.addSkip(self, _u("Skipped for another reason"))
+        self.assertEqual({_u("Skipped for some reason"):[self, self],
+            _u("Skipped for another reason"):[self]},
+            result.skip_reasons)
+
+    def test_now_datetime_now(self):
+        result = self.makeResult()
+        olddatetime = testresult.real.datetime
+        def restore():
+            testresult.real.datetime = olddatetime
+        self.addCleanup(restore)
+        class Module:
+            pass
+        now = datetime.datetime.now()
+        stubdatetime = Module()
+        stubdatetime.datetime = Module()
+        stubdatetime.datetime.now = lambda: now
+        testresult.real.datetime = stubdatetime
+        # Calling _now() looks up the time.
+        self.assertEqual(now, result._now())
+        then = now + datetime.timedelta(0, 1)
+        # Set an explicit datetime, which gets returned from then on.
+        result.time(then)
+        self.assertNotEqual(now, result._now())
+        self.assertEqual(then, result._now())
+        # go back to looking it up.
+        result.time(None)
+        self.assertEqual(now, result._now())
+
+    def test_now_datetime_time(self):
+        result = self.makeResult()
+        now = datetime.datetime.now()
+        result.time(now)
+        self.assertEqual(now, result._now())
+
+
+class TestWithFakeExceptions(TestCase):
+
+    def makeExceptionInfo(self, exceptionFactory, *args, **kwargs):
+        try:
+            raise exceptionFactory(*args, **kwargs)
+        except:
+            return sys.exc_info()
+
+
+class TestMultiTestResult(TestWithFakeExceptions):
+    """Tests for `MultiTestResult`."""
+
+    def setUp(self):
+        TestWithFakeExceptions.setUp(self)
+        self.result1 = LoggingResult([])
+        self.result2 = LoggingResult([])
+        self.multiResult = MultiTestResult(self.result1, self.result2)
+
+    def assertResultLogsEqual(self, expectedEvents):
+        """Assert that our test results have received the expected events."""
+        self.assertEqual(expectedEvents, self.result1._events)
+        self.assertEqual(expectedEvents, self.result2._events)
+
+    def test_empty(self):
+        # Initializing a `MultiTestResult` doesn't do anything to its
+        # `TestResult`s.
+        self.assertResultLogsEqual([])
+
+    def test_startTest(self):
+        # Calling `startTest` on a `MultiTestResult` calls `startTest` on all
+        # its `TestResult`s.
+        self.multiResult.startTest(self)
+        self.assertResultLogsEqual([('startTest', self)])
+
+    def test_stopTest(self):
+        # Calling `stopTest` on a `MultiTestResult` calls `stopTest` on all
+        # its `TestResult`s.
+        self.multiResult.stopTest(self)
+        self.assertResultLogsEqual([('stopTest', self)])
+
+    def test_addSkipped(self):
+        # Calling `addSkip` on a `MultiTestResult` calls addSkip on its
+        # results.
+        reason = _u("Skipped for some reason")
+        self.multiResult.addSkip(self, reason)
+        self.assertResultLogsEqual([('addSkip', self, reason)])
+
+    def test_addSuccess(self):
+        # Calling `addSuccess` on a `MultiTestResult` calls `addSuccess` on
+        # all its `TestResult`s.
+        self.multiResult.addSuccess(self)
+        self.assertResultLogsEqual([('addSuccess', self)])
+
+    def test_done(self):
+        # Calling `done` on a `MultiTestResult` calls `done` on all its
+        # `TestResult`s.
+        self.multiResult.done()
+        self.assertResultLogsEqual([('done')])
+
+    def test_addFailure(self):
+        # Calling `addFailure` on a `MultiTestResult` calls `addFailure` on
+        # all its `TestResult`s.
+        exc_info = self.makeExceptionInfo(AssertionError, 'failure')
+        self.multiResult.addFailure(self, exc_info)
+        self.assertResultLogsEqual([('addFailure', self, exc_info)])
+
+    def test_addError(self):
+        # Calling `addError` on a `MultiTestResult` calls `addError` on all
+        # its `TestResult`s.
+        exc_info = self.makeExceptionInfo(RuntimeError, 'error')
+        self.multiResult.addError(self, exc_info)
+        self.assertResultLogsEqual([('addError', self, exc_info)])
+
+    def test_startTestRun(self):
+        # Calling `startTestRun` on a `MultiTestResult` forwards to all its
+        # `TestResult`s.
+        self.multiResult.startTestRun()
+        self.assertResultLogsEqual([('startTestRun')])
+
+    def test_stopTestRun(self):
+        # Calling `stopTestRun` on a `MultiTestResult` forwards to all its
+        # `TestResult`s.
+        self.multiResult.stopTestRun()
+        self.assertResultLogsEqual([('stopTestRun')])
+
+
+class TestTextTestResult(TestWithFakeExceptions):
+    """Tests for `TextTestResult`."""
+
+    def setUp(self):
+        super(TestTextTestResult, self).setUp()
+        self.result = TextTestResult(StringIO())
+
+    def make_erroring_test(self):
+        class Test(TestCase):
+            def error(self):
+                1/0
+        return Test("error")
+
+    def make_failing_test(self):
+        class Test(TestCase):
+            def failed(self):
+                self.fail("yo!")
+        return Test("failed")
+
+    def make_test(self):
+        class Test(TestCase):
+            def test(self):
+                pass
+        return Test("test")
+
+    def getvalue(self):
+        return self.result.stream.getvalue()
+
+    def test__init_sets_stream(self):
+        result = TextTestResult("fp")
+        self.assertEqual("fp", result.stream)
+
+    def reset_output(self):
+        self.result.stream = StringIO()
+
+    def test_startTestRun(self):
+        self.result.startTestRun()
+        self.assertEqual("Tests running...\n", self.getvalue())
+
+    def test_stopTestRun_count_many(self):
+        test = self.make_test()
+        self.result.startTestRun()
+        self.result.startTest(test)
+        self.result.stopTest(test)
+        self.result.startTest(test)
+        self.result.stopTest(test)
+        self.result.stream = StringIO()
+        self.result.stopTestRun()
+        self.assertThat(self.getvalue(),
+            DocTestMatches("Ran 2 tests in ...s\n...", doctest.ELLIPSIS))
+
+    def test_stopTestRun_count_single(self):
+        test = self.make_test()
+        self.result.startTestRun()
+        self.result.startTest(test)
+        self.result.stopTest(test)
+        self.reset_output()
+        self.result.stopTestRun()
+        self.assertThat(self.getvalue(),
+            DocTestMatches("Ran 1 test in ...s\n\nOK\n", doctest.ELLIPSIS))
+
+    def test_stopTestRun_count_zero(self):
+        self.result.startTestRun()
+        self.reset_output()
+        self.result.stopTestRun()
+        self.assertThat(self.getvalue(),
+            DocTestMatches("Ran 0 tests in ...s\n\nOK\n", doctest.ELLIPSIS))
+
+    def test_stopTestRun_current_time(self):
+        test = self.make_test()
+        now = datetime.datetime.now()
+        self.result.time(now)
+        self.result.startTestRun()
+        self.result.startTest(test)
+        now = now + datetime.timedelta(0, 0, 0, 1)
+        self.result.time(now)
+        self.result.stopTest(test)
+        self.reset_output()
+        self.result.stopTestRun()
+        self.assertThat(self.getvalue(),
+            DocTestMatches("... in 0.001s\n...", doctest.ELLIPSIS))
+
+    def test_stopTestRun_successful(self):
+        self.result.startTestRun()
+        self.result.stopTestRun()
+        self.assertThat(self.getvalue(),
+            DocTestMatches("...\n\nOK\n", doctest.ELLIPSIS))
+
+    def test_stopTestRun_not_successful_failure(self):
+        test = self.make_failing_test()
+        self.result.startTestRun()
+        test.run(self.result)
+        self.result.stopTestRun()
+        self.assertThat(self.getvalue(),
+            DocTestMatches("...\n\nFAILED (failures=1)\n", doctest.ELLIPSIS))
+
+    def test_stopTestRun_not_successful_error(self):
+        test = self.make_erroring_test()
+        self.result.startTestRun()
+        test.run(self.result)
+        self.result.stopTestRun()
+        self.assertThat(self.getvalue(),
+            DocTestMatches("...\n\nFAILED (failures=1)\n", doctest.ELLIPSIS))
+
+    def test_stopTestRun_shows_details(self):
+        self.result.startTestRun()
+        self.make_erroring_test().run(self.result)
+        self.make_failing_test().run(self.result)
+        self.reset_output()
+        self.result.stopTestRun()
+        self.assertThat(self.getvalue(),
+            DocTestMatches("""...======================================================================
+ERROR: testtools.tests.test_testresult.Test.error
+----------------------------------------------------------------------
+Text attachment: traceback
+------------
+Traceback (most recent call last):
+  File "...testtools...runtest.py", line ..., in _run_user...
+    return fn(*args)
+  File "...testtools...testcase.py", line ..., in _run_test_method
+    testMethod()
+  File "...testtools...tests...test_testresult.py", line ..., in error
+    1/0
+ZeroDivisionError: int... division or modulo by zero
+------------
+======================================================================
+FAIL: testtools.tests.test_testresult.Test.failed
+----------------------------------------------------------------------
+Text attachment: traceback
+------------
+Traceback (most recent call last):
+  File "...testtools...runtest.py", line ..., in _run_user...
+    return fn(*args)
+  File "...testtools...testcase.py", line ..., in _run_test_method
+    testMethod()
+  File "...testtools...tests...test_testresult.py", line ..., in failed
+    self.fail("yo!")
+AssertionError: yo!
+------------
+...""", doctest.ELLIPSIS))
+
+
+class TestThreadSafeForwardingResult(TestWithFakeExceptions):
+    """Tests for `MultiTestResult`."""
+
+    def setUp(self):
+        TestWithFakeExceptions.setUp(self)
+        self.result_semaphore = threading.Semaphore(1)
+        self.target = LoggingResult([])
+        self.result1 = ThreadsafeForwardingResult(self.target,
+            self.result_semaphore)
+
+    def test_nonforwarding_methods(self):
+        # startTest and stopTest are not forwarded because they need to be
+        # batched.
+        self.result1.startTest(self)
+        self.result1.stopTest(self)
+        self.assertEqual([], self.target._events)
+
+    def test_startTestRun(self):
+        self.result1.startTestRun()
+        self.result2 = ThreadsafeForwardingResult(self.target,
+            self.result_semaphore)
+        self.result2.startTestRun()
+        self.assertEqual(["startTestRun", "startTestRun"], self.target._events)
+
+    def test_stopTestRun(self):
+        self.result1.stopTestRun()
+        self.result2 = ThreadsafeForwardingResult(self.target,
+            self.result_semaphore)
+        self.result2.stopTestRun()
+        self.assertEqual(["stopTestRun", "stopTestRun"], self.target._events)
+
+    def test_forwarding_methods(self):
+        # error, failure, skip and success are forwarded in batches.
+        exc_info1 = self.makeExceptionInfo(RuntimeError, 'error')
+        self.result1.addError(self, exc_info1)
+        exc_info2 = self.makeExceptionInfo(AssertionError, 'failure')
+        self.result1.addFailure(self, exc_info2)
+        reason = _u("Skipped for some reason")
+        self.result1.addSkip(self, reason)
+        self.result1.addSuccess(self)
+        self.assertEqual([('startTest', self),
+            ('addError', self, exc_info1),
+            ('stopTest', self),
+            ('startTest', self),
+            ('addFailure', self, exc_info2),
+            ('stopTest', self),
+            ('startTest', self),
+            ('addSkip', self, reason),
+            ('stopTest', self),
+            ('startTest', self),
+            ('addSuccess', self),
+            ('stopTest', self),
+            ], self.target._events)
+
+
+class TestExtendedToOriginalResultDecoratorBase(TestCase):
+
+    def make_26_result(self):
+        self.result = Python26TestResult()
+        self.make_converter()
+
+    def make_27_result(self):
+        self.result = Python27TestResult()
+        self.make_converter()
+
+    def make_converter(self):
+        self.converter = ExtendedToOriginalDecorator(self.result)
+
+    def make_extended_result(self):
+        self.result = ExtendedTestResult()
+        self.make_converter()
+
+    def check_outcome_details(self, outcome):
+        """Call an outcome with a details dict to be passed through."""
+        # This dict is /not/ convertible - thats deliberate, as it should
+        # not hit the conversion code path.
+        details = {'foo': 'bar'}
+        getattr(self.converter, outcome)(self, details=details)
+        self.assertEqual([(outcome, self, details)], self.result._events)
+
+    def get_details_and_string(self):
+        """Get a details dict and expected string."""
+        text1 = lambda: [_b("1\n2\n")]
+        text2 = lambda: [_b("3\n4\n")]
+        bin1 = lambda: [_b("5\n")]
+        details = {'text 1': Content(ContentType('text', 'plain'), text1),
+            'text 2': Content(ContentType('text', 'strange'), text2),
+            'bin 1': Content(ContentType('application', 'binary'), bin1)}
+        return (details, "Binary content: bin 1\n"
+            "Text attachment: text 1\n------------\n1\n2\n"
+            "------------\nText attachment: text 2\n------------\n"
+            "3\n4\n------------\n")
+
+    def check_outcome_details_to_exec_info(self, outcome, expected=None):
+        """Call an outcome with a details dict to be made into exc_info."""
+        # The conversion is a done using RemoteError and the string contents
+        # of the text types in the details dict.
+        if not expected:
+            expected = outcome
+        details, err_str = self.get_details_and_string()
+        getattr(self.converter, outcome)(self, details=details)
+        err = self.converter._details_to_exc_info(details)
+        self.assertEqual([(expected, self, err)], self.result._events)
+
+    def check_outcome_details_to_nothing(self, outcome, expected=None):
+        """Call an outcome with a details dict to be swallowed."""
+        if not expected:
+            expected = outcome
+        details = {'foo': 'bar'}
+        getattr(self.converter, outcome)(self, details=details)
+        self.assertEqual([(expected, self)], self.result._events)
+
+    def check_outcome_details_to_string(self, outcome):
+        """Call an outcome with a details dict to be stringified."""
+        details, err_str = self.get_details_and_string()
+        getattr(self.converter, outcome)(self, details=details)
+        self.assertEqual([(outcome, self, err_str)], self.result._events)
+
+    def check_outcome_exc_info(self, outcome, expected=None):
+        """Check that calling a legacy outcome still works."""
+        # calling some outcome with the legacy exc_info style api (no keyword
+        # parameters) gets passed through.
+        if not expected:
+            expected = outcome
+        err = sys.exc_info()
+        getattr(self.converter, outcome)(self, err)
+        self.assertEqual([(expected, self, err)], self.result._events)
+
+    def check_outcome_exc_info_to_nothing(self, outcome, expected=None):
+        """Check that calling a legacy outcome on a fallback works."""
+        # calling some outcome with the legacy exc_info style api (no keyword
+        # parameters) gets passed through.
+        if not expected:
+            expected = outcome
+        err = sys.exc_info()
+        getattr(self.converter, outcome)(self, err)
+        self.assertEqual([(expected, self)], self.result._events)
+
+    def check_outcome_nothing(self, outcome, expected=None):
+        """Check that calling a legacy outcome still works."""
+        if not expected:
+            expected = outcome
+        getattr(self.converter, outcome)(self)
+        self.assertEqual([(expected, self)], self.result._events)
+
+    def check_outcome_string_nothing(self, outcome, expected):
+        """Check that calling outcome with a string calls expected."""
+        getattr(self.converter, outcome)(self, "foo")
+        self.assertEqual([(expected, self)], self.result._events)
+
+    def check_outcome_string(self, outcome):
+        """Check that calling outcome with a string works."""
+        getattr(self.converter, outcome)(self, "foo")
+        self.assertEqual([(outcome, self, "foo")], self.result._events)
+
+
+class TestExtendedToOriginalResultDecorator(
+    TestExtendedToOriginalResultDecoratorBase):
+
+    def test_progress_py26(self):
+        self.make_26_result()
+        self.converter.progress(1, 2)
+
+    def test_progress_py27(self):
+        self.make_27_result()
+        self.converter.progress(1, 2)
+
+    def test_progress_pyextended(self):
+        self.make_extended_result()
+        self.converter.progress(1, 2)
+        self.assertEqual([('progress', 1, 2)], self.result._events)
+
+    def test_shouldStop(self):
+        self.make_26_result()
+        self.assertEqual(False, self.converter.shouldStop)
+        self.converter.decorated.stop()
+        self.assertEqual(True, self.converter.shouldStop)
+
+    def test_startTest_py26(self):
+        self.make_26_result()
+        self.converter.startTest(self)
+        self.assertEqual([('startTest', self)], self.result._events)
+    
+    def test_startTest_py27(self):
+        self.make_27_result()
+        self.converter.startTest(self)
+        self.assertEqual([('startTest', self)], self.result._events)
+
+    def test_startTest_pyextended(self):
+        self.make_extended_result()
+        self.converter.startTest(self)
+        self.assertEqual([('startTest', self)], self.result._events)
+
+    def test_startTestRun_py26(self):
+        self.make_26_result()
+        self.converter.startTestRun()
+        self.assertEqual([], self.result._events)
+    
+    def test_startTestRun_py27(self):
+        self.make_27_result()
+        self.converter.startTestRun()
+        self.assertEqual([('startTestRun',)], self.result._events)
+
+    def test_startTestRun_pyextended(self):
+        self.make_extended_result()
+        self.converter.startTestRun()
+        self.assertEqual([('startTestRun',)], self.result._events)
+
+    def test_stopTest_py26(self):
+        self.make_26_result()
+        self.converter.stopTest(self)
+        self.assertEqual([('stopTest', self)], self.result._events)
+    
+    def test_stopTest_py27(self):
+        self.make_27_result()
+        self.converter.stopTest(self)
+        self.assertEqual([('stopTest', self)], self.result._events)
+
+    def test_stopTest_pyextended(self):
+        self.make_extended_result()
+        self.converter.stopTest(self)
+        self.assertEqual([('stopTest', self)], self.result._events)
+
+    def test_stopTestRun_py26(self):
+        self.make_26_result()
+        self.converter.stopTestRun()
+        self.assertEqual([], self.result._events)
+    
+    def test_stopTestRun_py27(self):
+        self.make_27_result()
+        self.converter.stopTestRun()
+        self.assertEqual([('stopTestRun',)], self.result._events)
+
+    def test_stopTestRun_pyextended(self):
+        self.make_extended_result()
+        self.converter.stopTestRun()
+        self.assertEqual([('stopTestRun',)], self.result._events)
+
+    def test_tags_py26(self):
+        self.make_26_result()
+        self.converter.tags(1, 2)
+
+    def test_tags_py27(self):
+        self.make_27_result()
+        self.converter.tags(1, 2)
+
+    def test_tags_pyextended(self):
+        self.make_extended_result()
+        self.converter.tags(1, 2)
+        self.assertEqual([('tags', 1, 2)], self.result._events)
+
+    def test_time_py26(self):
+        self.make_26_result()
+        self.converter.time(1)
+
+    def test_time_py27(self):
+        self.make_27_result()
+        self.converter.time(1)
+
+    def test_time_pyextended(self):
+        self.make_extended_result()
+        self.converter.time(1)
+        self.assertEqual([('time', 1)], self.result._events)
+
+
+class TestExtendedToOriginalAddError(TestExtendedToOriginalResultDecoratorBase):
+
+    outcome = 'addError'
+
+    def test_outcome_Original_py26(self):
+        self.make_26_result()
+        self.check_outcome_exc_info(self.outcome)
+    
+    def test_outcome_Original_py27(self):
+        self.make_27_result()
+        self.check_outcome_exc_info(self.outcome)
+
+    def test_outcome_Original_pyextended(self):
+        self.make_extended_result()
+        self.check_outcome_exc_info(self.outcome)
+
+    def test_outcome_Extended_py26(self):
+        self.make_26_result()
+        self.check_outcome_details_to_exec_info(self.outcome)
+    
+    def test_outcome_Extended_py27(self):
+        self.make_27_result()
+        self.check_outcome_details_to_exec_info(self.outcome)
+
+    def test_outcome_Extended_pyextended(self):
+        self.make_extended_result()
+        self.check_outcome_details(self.outcome)
+
+    def test_outcome__no_details(self):
+        self.make_extended_result()
+        self.assertRaises(ValueError,
+            getattr(self.converter, self.outcome), self)
+
+
+class TestExtendedToOriginalAddFailure(
+    TestExtendedToOriginalAddError):
+
+    outcome = 'addFailure'
+
+
+class TestExtendedToOriginalAddExpectedFailure(
+    TestExtendedToOriginalAddError):
+
+    outcome = 'addExpectedFailure'
+
+    def test_outcome_Original_py26(self):
+        self.make_26_result()
+        self.check_outcome_exc_info_to_nothing(self.outcome, 'addSuccess')
+    
+    def test_outcome_Extended_py26(self):
+        self.make_26_result()
+        self.check_outcome_details_to_nothing(self.outcome, 'addSuccess')
+    
+
+
+class TestExtendedToOriginalAddSkip(
+    TestExtendedToOriginalResultDecoratorBase):
+
+    outcome = 'addSkip'
+
+    def test_outcome_Original_py26(self):
+        self.make_26_result()
+        self.check_outcome_string_nothing(self.outcome, 'addSuccess')
+    
+    def test_outcome_Original_py27(self):
+        self.make_27_result()
+        self.check_outcome_string(self.outcome)
+
+    def test_outcome_Original_pyextended(self):
+        self.make_extended_result()
+        self.check_outcome_string(self.outcome)
+
+    def test_outcome_Extended_py26(self):
+        self.make_26_result()
+        self.check_outcome_string_nothing(self.outcome, 'addSuccess')
+    
+    def test_outcome_Extended_py27(self):
+        self.make_27_result()
+        self.check_outcome_details_to_string(self.outcome)
+
+    def test_outcome_Extended_pyextended(self):
+        self.make_extended_result()
+        self.check_outcome_details(self.outcome)
+
+    def test_outcome__no_details(self):
+        self.make_extended_result()
+        self.assertRaises(ValueError,
+            getattr(self.converter, self.outcome), self)
+
+
+class TestExtendedToOriginalAddSuccess(
+    TestExtendedToOriginalResultDecoratorBase):
+
+    outcome = 'addSuccess'
+    expected = 'addSuccess'
+
+    def test_outcome_Original_py26(self):
+        self.make_26_result()
+        self.check_outcome_nothing(self.outcome, self.expected)
+    
+    def test_outcome_Original_py27(self):
+        self.make_27_result()
+        self.check_outcome_nothing(self.outcome)
+
+    def test_outcome_Original_pyextended(self):
+        self.make_extended_result()
+        self.check_outcome_nothing(self.outcome)
+
+    def test_outcome_Extended_py26(self):
+        self.make_26_result()
+        self.check_outcome_details_to_nothing(self.outcome, self.expected)
+    
+    def test_outcome_Extended_py27(self):
+        self.make_27_result()
+        self.check_outcome_details_to_nothing(self.outcome)
+
+    def test_outcome_Extended_pyextended(self):
+        self.make_extended_result()
+        self.check_outcome_details(self.outcome)
+
+
+class TestExtendedToOriginalAddUnexpectedSuccess(
+    TestExtendedToOriginalAddSuccess):
+
+    outcome = 'addUnexpectedSuccess'
+
+
+class TestExtendedToOriginalResultOtherAttributes(
+    TestExtendedToOriginalResultDecoratorBase):
+
+    def test_other_attribute(self):
+        class OtherExtendedResult:
+            def foo(self):
+                return 2
+            bar = 1
+        self.result = OtherExtendedResult()
+        self.make_converter()
+        self.assertEqual(1, self.converter.bar)
+        self.assertEqual(2, self.converter.foo())
+    
+
+def test_suite():
+    from unittest import TestLoader
+    return TestLoader().loadTestsFromName(__name__)
diff --git a/lib/subunit/python/testtools/tests/test_testsuite.py b/lib/subunit/python/testtools/tests/test_testsuite.py
new file mode 100644
index 0000000000..3f2f02758f
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/test_testsuite.py
@@ -0,0 +1,56 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Test ConcurrentTestSuite and related things."""
+
+__metaclass__ = type
+
+import unittest
+
+from testtools import (
+    ConcurrentTestSuite,
+    iterate_tests,
+    TestCase,
+    )
+from testtools.matchers import (
+    Equals,
+    )
+from testtools.tests.helpers import LoggingResult
+
+
+class TestConcurrentTestSuiteRun(TestCase):
+
+    def test_trivial(self):
+        log = []
+        result = LoggingResult(log)
+        class Sample(TestCase):
+            def __hash__(self):
+                return id(self)
+
+            def test_method1(self):
+                pass
+            def test_method2(self):
+                pass
+        test1 = Sample('test_method1')
+        test2 = Sample('test_method2')
+        original_suite = unittest.TestSuite([test1, test2])
+        suite = ConcurrentTestSuite(original_suite, self.split_suite)
+        suite.run(result)
+        test1 = log[0][1]
+        test2 = log[-1][1]
+        self.assertIsInstance(test1, Sample)
+        self.assertIsInstance(test2, Sample)
+        self.assertNotEqual(test1.id(), test2.id())
+        # We expect the start/outcome/stop to be grouped
+        expected = [('startTest', test1), ('addSuccess', test1),
+            ('stopTest', test1), ('startTest', test2), ('addSuccess', test2),
+            ('stopTest', test2)]
+        self.assertThat(log, Equals(expected))
+
+    def split_suite(self, suite):
+        tests = list(iterate_tests(suite))
+        return tests[0], tests[1]
+
+
+def test_suite():
+    from unittest import TestLoader
+    return TestLoader().loadTestsFromName(__name__)
diff --git a/lib/subunit/python/testtools/tests/test_testtools.py b/lib/subunit/python/testtools/tests/test_testtools.py
new file mode 100644
index 0000000000..8cd90de6fe
--- /dev/null
+++ b/lib/subunit/python/testtools/tests/test_testtools.py
@@ -0,0 +1,743 @@
+# Copyright (c) 2008 Jonathan M. Lange. See LICENSE for details.
+
+"""Tests for extensions to the base test library."""
+
+import sys
+import unittest
+
+from testtools import (
+    TestCase,
+    clone_test_with_new_id,
+    content,
+    skip,
+    skipIf,
+    skipUnless,
+    testcase,
+    )
+from testtools.matchers import (
+    Equals,
+    )
+from testtools.tests.helpers import (
+    an_exc_info,
+    LoggingResult,
+    Python26TestResult,
+    Python27TestResult,
+    ExtendedTestResult,
+    )
+
+
+class TestEquality(TestCase):
+    """Test `TestCase`'s equality implementation."""
+
+    def test_identicalIsEqual(self):
+        # TestCase's are equal if they are identical.
+        self.assertEqual(self, self)
+
+    def test_nonIdenticalInUnequal(self):
+        # TestCase's are not equal if they are not identical.
+        self.assertNotEqual(TestCase(methodName='run'),
+            TestCase(methodName='skip'))
+
+
+class TestAssertions(TestCase):
+    """Test assertions in TestCase."""
+
+    def raiseError(self, exceptionFactory, *args, **kwargs):
+        raise exceptionFactory(*args, **kwargs)
+
+    def test_formatTypes_single(self):
+        # Given a single class, _formatTypes returns the name.
+        class Foo:
+            pass
+        self.assertEqual('Foo', self._formatTypes(Foo))
+
+    def test_formatTypes_multiple(self):
+        # Given multiple types, _formatTypes returns the names joined by
+        # commas.
+        class Foo:
+            pass
+        class Bar:
+            pass
+        self.assertEqual('Foo, Bar', self._formatTypes([Foo, Bar]))
+
+    def test_assertRaises(self):
+        # assertRaises asserts that a callable raises a particular exception.
+        self.assertRaises(RuntimeError, self.raiseError, RuntimeError)
+
+    def test_assertRaises_fails_when_no_error_raised(self):
+        # assertRaises raises self.failureException when it's passed a
+        # callable that raises no error.
+        ret = ('orange', 42)
+        try:
+            self.assertRaises(RuntimeError, lambda: ret)
+        except self.failureException:
+            # We expected assertRaises to raise this exception.
+            e = sys.exc_info()[1]
+            self.assertEqual(
+                '%s not raised, %r returned instead.'
+                % (self._formatTypes(RuntimeError), ret), str(e))
+        else:
+            self.fail('Expected assertRaises to fail, but it did not.')
+
+    def test_assertRaises_fails_when_different_error_raised(self):
+        # assertRaises re-raises an exception that it didn't expect.
+        self.assertRaises(
+            ZeroDivisionError,
+            self.assertRaises,
+                RuntimeError, self.raiseError, ZeroDivisionError)
+
+    def test_assertRaises_returns_the_raised_exception(self):
+        # assertRaises returns the exception object that was raised. This is
+        # useful for testing that exceptions have the right message.
+
+        # This contraption stores the raised exception, so we can compare it
+        # to the return value of assertRaises.
+        raisedExceptions = []
+        def raiseError():
+            try:
+                raise RuntimeError('Deliberate error')
+            except RuntimeError:
+                raisedExceptions.append(sys.exc_info()[1])
+                raise
+
+        exception = self.assertRaises(RuntimeError, raiseError)
+        self.assertEqual(1, len(raisedExceptions))
+        self.assertTrue(
+            exception is raisedExceptions[0],
+            "%r is not %r" % (exception, raisedExceptions[0]))
+
+    def test_assertRaises_with_multiple_exceptions(self):
+        # assertRaises((ExceptionOne, ExceptionTwo), function) asserts that
+        # function raises one of ExceptionTwo or ExceptionOne.
+        expectedExceptions = (RuntimeError, ZeroDivisionError)
+        self.assertRaises(
+            expectedExceptions, self.raiseError, expectedExceptions[0])
+        self.assertRaises(
+            expectedExceptions, self.raiseError, expectedExceptions[1])
+
+    def test_assertRaises_with_multiple_exceptions_failure_mode(self):
+        # If assertRaises is called expecting one of a group of exceptions and
+        # a callable that doesn't raise an exception, then fail with an
+        # appropriate error message.
+        expectedExceptions = (RuntimeError, ZeroDivisionError)
+        failure = self.assertRaises(
+            self.failureException,
+            self.assertRaises, expectedExceptions, lambda: None)
+        self.assertEqual(
+            '%s not raised, None returned instead.'
+            % self._formatTypes(expectedExceptions), str(failure))
+
+    def assertFails(self, message, function, *args, **kwargs):
+        """Assert that function raises a failure with the given message."""
+        failure = self.assertRaises(
+            self.failureException, function, *args, **kwargs)
+        self.assertEqual(message, str(failure))
+
+    def test_assertIn_success(self):
+        # assertIn(needle, haystack) asserts that 'needle' is in 'haystack'.
+        self.assertIn(3, range(10))
+        self.assertIn('foo', 'foo bar baz')
+        self.assertIn('foo', 'foo bar baz'.split())
+
+    def test_assertIn_failure(self):
+        # assertIn(needle, haystack) fails the test when 'needle' is not in
+        # 'haystack'.
+        self.assertFails('3 not in [0, 1, 2]', self.assertIn, 3, [0, 1, 2])
+        self.assertFails(
+            '%r not in %r' % ('qux', 'foo bar baz'),
+            self.assertIn, 'qux', 'foo bar baz')
+
+    def test_assertNotIn_success(self):
+        # assertNotIn(needle, haystack) asserts that 'needle' is not in
+        # 'haystack'.
+        self.assertNotIn(3, [0, 1, 2])
+        self.assertNotIn('qux', 'foo bar baz')
+
+    def test_assertNotIn_failure(self):
+        # assertNotIn(needle, haystack) fails the test when 'needle' is in
+        # 'haystack'.
+        self.assertFails('3 in [1, 2, 3]', self.assertNotIn, 3, [1, 2, 3])
+        self.assertFails(
+            '%r in %r' % ('foo', 'foo bar baz'),
+            self.assertNotIn, 'foo', 'foo bar baz')
+
+    def test_assertIsInstance(self):
+        # assertIsInstance asserts that an object is an instance of a class.
+
+        class Foo:
+            """Simple class for testing assertIsInstance."""
+
+        foo = Foo()
+        self.assertIsInstance(foo, Foo)
+
+    def test_assertIsInstance_multiple_classes(self):
+        # assertIsInstance asserts that an object is an instance of one of a
+        # group of classes.
+
+        class Foo:
+            """Simple class for testing assertIsInstance."""
+
+        class Bar:
+            """Another simple class for testing assertIsInstance."""
+
+        foo = Foo()
+        self.assertIsInstance(foo, (Foo, Bar))
+        self.assertIsInstance(Bar(), (Foo, Bar))
+
+    def test_assertIsInstance_failure(self):
+        # assertIsInstance(obj, klass) fails the test when obj is not an
+        # instance of klass.
+
+        class Foo:
+            """Simple class for testing assertIsInstance."""
+
+        self.assertFails(
+            '42 is not an instance of %s' % self._formatTypes(Foo),
+            self.assertIsInstance, 42, Foo)
+
+    def test_assertIsInstance_failure_multiple_classes(self):
+        # assertIsInstance(obj, (klass1, klass2)) fails the test when obj is
+        # not an instance of klass1 or klass2.
+
+        class Foo:
+            """Simple class for testing assertIsInstance."""
+
+        class Bar:
+            """Another simple class for testing assertIsInstance."""
+
+        self.assertFails(
+            '42 is not an instance of %s' % self._formatTypes([Foo, Bar]),
+            self.assertIsInstance, 42, (Foo, Bar))
+
+    def test_assertIs(self):
+        # assertIs asserts that an object is identical to another object.
+        self.assertIs(None, None)
+        some_list = [42]
+        self.assertIs(some_list, some_list)
+        some_object = object()
+        self.assertIs(some_object, some_object)
+
+    def test_assertIs_fails(self):
+        # assertIs raises assertion errors if one object is not identical to
+        # another.
+        self.assertFails('None is not 42', self.assertIs, None, 42)
+        self.assertFails('[42] is not [42]', self.assertIs, [42], [42])
+
+    def test_assertIsNot(self):
+        # assertIsNot asserts that an object is not identical to another
+        # object.
+        self.assertIsNot(None, 42)
+        self.assertIsNot([42], [42])
+        self.assertIsNot(object(), object())
+
+    def test_assertIsNot_fails(self):
+        # assertIsNot raises assertion errors if one object is identical to
+        # another.
+        self.assertFails('None is None', self.assertIsNot, None, None)
+        some_list = [42]
+        self.assertFails(
+            '[42] is [42]', self.assertIsNot, some_list, some_list)
+
+    def test_assertThat_matches_clean(self):
+        class Matcher:
+            def match(self, foo):
+                return None
+        self.assertThat("foo", Matcher())
+
+    def test_assertThat_mismatch_raises_description(self):
+        calls = []
+        class Mismatch:
+            def __init__(self, thing):
+                self.thing = thing
+            def describe(self):
+                calls.append(('describe_diff', self.thing))
+                return "object is not a thing"
+        class Matcher:
+            def match(self, thing):
+                calls.append(('match', thing))
+                return Mismatch(thing)
+            def __str__(self):
+                calls.append(('__str__',))
+                return "a description"
+        class Test(TestCase):
+            def test(self):
+                self.assertThat("foo", Matcher())
+        result = Test("test").run()
+        self.assertEqual([
+            ('match', "foo"),
+            ('describe_diff', "foo"),
+            ('__str__',),
+            ], calls)
+        self.assertFalse(result.wasSuccessful())
+
+
+class TestAddCleanup(TestCase):
+    """Tests for TestCase.addCleanup."""
+
+    class LoggingTest(TestCase):
+        """A test that logs calls to setUp, runTest and tearDown."""
+
+        def setUp(self):
+            TestCase.setUp(self)
+            self._calls = ['setUp']
+
+        def brokenSetUp(self):
+            # A tearDown that deliberately fails.
+            self._calls = ['brokenSetUp']
+            raise RuntimeError('Deliberate Failure')
+
+        def runTest(self):
+            self._calls.append('runTest')
+
+        def tearDown(self):
+            self._calls.append('tearDown')
+            TestCase.tearDown(self)
+
+    def setUp(self):
+        TestCase.setUp(self)
+        self._result_calls = []
+        self.test = TestAddCleanup.LoggingTest('runTest')
+        self.logging_result = LoggingResult(self._result_calls)
+
+    def assertErrorLogEqual(self, messages):
+        self.assertEqual(messages, [call[0] for call in self._result_calls])
+
+    def assertTestLogEqual(self, messages):
+        """Assert that the call log equals `messages`."""
+        case = self._result_calls[0][1]
+        self.assertEqual(messages, case._calls)
+
+    def logAppender(self, message):
+        """A cleanup that appends `message` to the tests log.
+
+        Cleanups are callables that are added to a test by addCleanup. To
+        verify that our cleanups run in the right order, we add strings to a
+        list that acts as a log. This method returns a cleanup that will add
+        the given message to that log when run.
+        """
+        self.test._calls.append(message)
+
+    def test_fixture(self):
+        # A normal run of self.test logs 'setUp', 'runTest' and 'tearDown'.
+        # This test doesn't test addCleanup itself, it just sanity checks the
+        # fixture.
+        self.test.run(self.logging_result)
+        self.assertTestLogEqual(['setUp', 'runTest', 'tearDown'])
+
+    def test_cleanup_run_before_tearDown(self):
+        # Cleanup functions added with 'addCleanup' are called before tearDown
+        # runs.
+        self.test.addCleanup(self.logAppender, 'cleanup')
+        self.test.run(self.logging_result)
+        self.assertTestLogEqual(['setUp', 'runTest', 'tearDown', 'cleanup'])
+
+    def test_add_cleanup_called_if_setUp_fails(self):
+        # Cleanup functions added with 'addCleanup' are called even if setUp
+        # fails. Note that tearDown has a different behavior: it is only
+        # called when setUp succeeds.
+        self.test.setUp = self.test.brokenSetUp
+        self.test.addCleanup(self.logAppender, 'cleanup')
+        self.test.run(self.logging_result)
+        self.assertTestLogEqual(['brokenSetUp', 'cleanup'])
+
+    def test_addCleanup_called_in_reverse_order(self):
+        # Cleanup functions added with 'addCleanup' are called in reverse
+        # order.
+        #
+        # One of the main uses of addCleanup is to dynamically create
+        # resources that need some sort of explicit tearDown. Often one
+        # resource will be created in terms of another, e.g.,
+        #     self.first = self.makeFirst()
+        #     self.second = self.makeSecond(self.first)
+        #
+        # When this happens, we generally want to clean up the second resource
+        # before the first one, since the second depends on the first.
+        self.test.addCleanup(self.logAppender, 'first')
+        self.test.addCleanup(self.logAppender, 'second')
+        self.test.run(self.logging_result)
+        self.assertTestLogEqual(
+            ['setUp', 'runTest', 'tearDown', 'second', 'first'])
+
+    def test_tearDown_runs_after_cleanup_failure(self):
+        # tearDown runs even if a cleanup function fails.
+        self.test.addCleanup(lambda: 1/0)
+        self.test.run(self.logging_result)
+        self.assertTestLogEqual(['setUp', 'runTest', 'tearDown'])
+
+    def test_cleanups_continue_running_after_error(self):
+        # All cleanups are always run, even if one or two of them fail.
+        self.test.addCleanup(self.logAppender, 'first')
+        self.test.addCleanup(lambda: 1/0)
+        self.test.addCleanup(self.logAppender, 'second')
+        self.test.run(self.logging_result)
+        self.assertTestLogEqual(
+            ['setUp', 'runTest', 'tearDown', 'second', 'first'])
+
+    def test_error_in_cleanups_are_captured(self):
+        # If a cleanup raises an error, we want to record it and fail the the
+        # test, even though we go on to run other cleanups.
+        self.test.addCleanup(lambda: 1/0)
+        self.test.run(self.logging_result)
+        self.assertErrorLogEqual(['startTest', 'addError', 'stopTest'])
+
+    def test_keyboard_interrupt_not_caught(self):
+        # If a cleanup raises KeyboardInterrupt, it gets reraised.
+        def raiseKeyboardInterrupt():
+            raise KeyboardInterrupt()
+        self.test.addCleanup(raiseKeyboardInterrupt)
+        self.assertRaises(
+            KeyboardInterrupt, self.test.run, self.logging_result)
+
+    def test_multipleErrorsReported(self):
+        # Errors from all failing cleanups are reported.
+        self.test.addCleanup(lambda: 1/0)
+        self.test.addCleanup(lambda: 1/0)
+        self.test.run(self.logging_result)
+        self.assertErrorLogEqual(
+            ['startTest', 'addError', 'addError', 'stopTest'])
+
+
+class TestWithDetails(TestCase):
+
+    def assertDetailsProvided(self, case, expected_outcome, expected_keys):
+        """Assert that when case is run, details are provided to the result.
+
+        :param case: A TestCase to run.
+        :param expected_outcome: The call that should be made.
+        :param expected_keys: The keys to look for.
+        """
+        result = ExtendedTestResult()
+        case.run(result)
+        case = result._events[0][1]
+        expected = [
+            ('startTest', case),
+            (expected_outcome, case),
+            ('stopTest', case),
+            ]
+        self.assertEqual(3, len(result._events))
+        self.assertEqual(expected[0], result._events[0])
+        self.assertEqual(expected[1], result._events[1][0:2])
+        # Checking the TB is right is rather tricky. doctest line matching
+        # would help, but 'meh'.
+        self.assertEqual(sorted(expected_keys),
+            sorted(result._events[1][2].keys()))
+        self.assertEqual(expected[-1], result._events[-1])
+
+    def get_content(self):
+        return content.Content(
+            content.ContentType("text", "foo"), lambda: ['foo'])
+
+
+class TestExpectedFailure(TestWithDetails):
+    """Tests for expected failures and unexpected successess."""
+
+    def make_unexpected_case(self):
+        class Case(TestCase):
+            def test(self):
+                raise testcase._UnexpectedSuccess
+        case = Case('test')
+        return case
+
+    def test_raising__UnexpectedSuccess_py27(self):
+        case = self.make_unexpected_case()
+        result = Python27TestResult()
+        case.run(result)
+        case = result._events[0][1]
+        self.assertEqual([
+            ('startTest', case),
+            ('addUnexpectedSuccess', case),
+            ('stopTest', case),
+            ], result._events)
+
+    def test_raising__UnexpectedSuccess_extended(self):
+        case = self.make_unexpected_case()
+        result = ExtendedTestResult()
+        case.run(result)
+        case = result._events[0][1]
+        self.assertEqual([
+            ('startTest', case),
+            ('addUnexpectedSuccess', case, {}),
+            ('stopTest', case),
+            ], result._events)
+
+    def make_xfail_case_xfails(self):
+        content = self.get_content()
+        class Case(TestCase):
+            def test(self):
+                self.addDetail("foo", content)
+                self.expectFailure("we are sad", self.assertEqual,
+                    1, 0)
+        case = Case('test')
+        return case
+
+    def make_xfail_case_succeeds(self):
+        content = self.get_content()
+        class Case(TestCase):
+            def test(self):
+                self.addDetail("foo", content)
+                self.expectFailure("we are sad", self.assertEqual,
+                    1, 1)
+        case = Case('test')
+        return case
+
+    def test_expectFailure_KnownFailure_extended(self):
+        case = self.make_xfail_case_xfails()
+        self.assertDetailsProvided(case, "addExpectedFailure",
+            ["foo", "traceback", "reason"])
+
+    def test_expectFailure_KnownFailure_unexpected_success(self):
+        case = self.make_xfail_case_succeeds()
+        self.assertDetailsProvided(case, "addUnexpectedSuccess",
+            ["foo", "reason"])
+
+
+class TestUniqueFactories(TestCase):
+    """Tests for getUniqueString and getUniqueInteger."""
+
+    def test_getUniqueInteger(self):
+        # getUniqueInteger returns an integer that increments each time you
+        # call it.
+        one = self.getUniqueInteger()
+        self.assertEqual(1, one)
+        two = self.getUniqueInteger()
+        self.assertEqual(2, two)
+
+    def test_getUniqueString(self):
+        # getUniqueString returns the current test id followed by a unique
+        # integer.
+        name_one = self.getUniqueString()
+        self.assertEqual('%s-%d' % (self.id(), 1), name_one)
+        name_two = self.getUniqueString()
+        self.assertEqual('%s-%d' % (self.id(), 2), name_two)
+
+    def test_getUniqueString_prefix(self):
+        # If getUniqueString is given an argument, it uses that argument as
+        # the prefix of the unique string, rather than the test id.
+        name_one = self.getUniqueString('foo')
+        self.assertThat(name_one, Equals('foo-1'))
+        name_two = self.getUniqueString('bar')
+        self.assertThat(name_two, Equals('bar-2'))
+
+
+class TestCloneTestWithNewId(TestCase):
+    """Tests for clone_test_with_new_id."""
+
+    def test_clone_test_with_new_id(self):
+        class FooTestCase(TestCase):
+            def test_foo(self):
+                pass
+        test = FooTestCase('test_foo')
+        oldName = test.id()
+        newName = self.getUniqueString()
+        newTest = clone_test_with_new_id(test, newName)
+        self.assertEqual(newName, newTest.id())
+        self.assertEqual(oldName, test.id(),
+            "the original test instance should be unchanged.")
+
+
+class TestDetailsProvided(TestWithDetails):
+
+    def test_addDetail(self):
+        mycontent = self.get_content()
+        self.addDetail("foo", mycontent)
+        details = self.getDetails()
+        self.assertEqual({"foo": mycontent}, details)
+
+    def test_addError(self):
+        class Case(TestCase):
+            def test(this):
+                this.addDetail("foo", self.get_content())
+                1/0
+        self.assertDetailsProvided(Case("test"), "addError",
+            ["foo", "traceback"])
+
+    def test_addFailure(self):
+        class Case(TestCase):
+            def test(this):
+                this.addDetail("foo", self.get_content())
+                self.fail('yo')
+        self.assertDetailsProvided(Case("test"), "addFailure",
+            ["foo", "traceback"])
+
+    def test_addSkip(self):
+        class Case(TestCase):
+            def test(this):
+                this.addDetail("foo", self.get_content())
+                self.skip('yo')
+        self.assertDetailsProvided(Case("test"), "addSkip",
+            ["foo", "reason"])
+
+    def test_addSucccess(self):
+        class Case(TestCase):
+            def test(this):
+                this.addDetail("foo", self.get_content())
+        self.assertDetailsProvided(Case("test"), "addSuccess",
+            ["foo"])
+
+    def test_addUnexpectedSuccess(self):
+        class Case(TestCase):
+            def test(this):
+                this.addDetail("foo", self.get_content())
+                raise testcase._UnexpectedSuccess()
+        self.assertDetailsProvided(Case("test"), "addUnexpectedSuccess",
+            ["foo"])
+
+
+class TestSetupTearDown(TestCase):
+
+    def test_setUpNotCalled(self):
+        class DoesnotcallsetUp(TestCase):
+            def setUp(self):
+                pass
+            def test_method(self):
+                pass
+        result = unittest.TestResult()
+        DoesnotcallsetUp('test_method').run(result)
+        self.assertEqual(1, len(result.errors))
+
+    def test_tearDownNotCalled(self):
+        class DoesnotcalltearDown(TestCase):
+            def test_method(self):
+                pass
+            def tearDown(self):
+                pass
+        result = unittest.TestResult()
+        DoesnotcalltearDown('test_method').run(result)
+        self.assertEqual(1, len(result.errors))
+
+
+class TestSkipping(TestCase):
+    """Tests for skipping of tests functionality."""
+
+    def test_skip_causes_skipException(self):
+        self.assertRaises(self.skipException, self.skip, "Skip this test")
+
+    def test_skip_without_reason_works(self):
+        class Test(TestCase):
+            def test(self):
+                raise self.skipException()
+        case = Test("test")
+        result = ExtendedTestResult()
+        case.run(result)
+        self.assertEqual('addSkip', result._events[1][0])
+        self.assertEqual('no reason given.',
+            ''.join(result._events[1][2]['reason'].iter_text()))
+
+    def test_skipException_in_setup_calls_result_addSkip(self):
+        class TestThatRaisesInSetUp(TestCase):
+            def setUp(self):
+                TestCase.setUp(self)
+                self.skip("skipping this test")
+            def test_that_passes(self):
+                pass
+        calls = []
+        result = LoggingResult(calls)
+        test = TestThatRaisesInSetUp("test_that_passes")
+        test.run(result)
+        case = result._events[0][1]
+        self.assertEqual([('startTest', case),
+            ('addSkip', case, "Text attachment: reason\n------------\n"
+             "skipping this test\n------------\n"), ('stopTest', case)],
+            calls)
+
+    def test_skipException_in_test_method_calls_result_addSkip(self):
+        class SkippingTest(TestCase):
+            def test_that_raises_skipException(self):
+                self.skip("skipping this test")
+        result = Python27TestResult()
+        test = SkippingTest("test_that_raises_skipException")
+        test.run(result)
+        case = result._events[0][1]
+        self.assertEqual([('startTest', case),
+            ('addSkip', case, "Text attachment: reason\n------------\n"
+             "skipping this test\n------------\n"), ('stopTest', case)],
+            result._events)
+
+    def test_skip__in_setup_with_old_result_object_calls_addSuccess(self):
+        class SkippingTest(TestCase):
+            def setUp(self):
+                TestCase.setUp(self)
+                raise self.skipException("skipping this test")
+            def test_that_raises_skipException(self):
+                pass
+        result = Python26TestResult()
+        test = SkippingTest("test_that_raises_skipException")
+        test.run(result)
+        self.assertEqual('addSuccess', result._events[1][0])
+
+    def test_skip_with_old_result_object_calls_addError(self):
+        class SkippingTest(TestCase):
+            def test_that_raises_skipException(self):
+                raise self.skipException("skipping this test")
+        result = Python26TestResult()
+        test = SkippingTest("test_that_raises_skipException")
+        test.run(result)
+        self.assertEqual('addSuccess', result._events[1][0])
+
+    def test_skip_decorator(self):
+        class SkippingTest(TestCase):
+            @skip("skipping this test")
+            def test_that_is_decorated_with_skip(self):
+                self.fail()
+        result = Python26TestResult()
+        test = SkippingTest("test_that_is_decorated_with_skip")
+        test.run(result)
+        self.assertEqual('addSuccess', result._events[1][0])
+
+    def test_skipIf_decorator(self):
+        class SkippingTest(TestCase):
+            @skipIf(True, "skipping this test")
+            def test_that_is_decorated_with_skipIf(self):
+                self.fail()
+        result = Python26TestResult()
+        test = SkippingTest("test_that_is_decorated_with_skipIf")
+        test.run(result)
+        self.assertEqual('addSuccess', result._events[1][0])
+
+    def test_skipUnless_decorator(self):
+        class SkippingTest(TestCase):
+            @skipUnless(False, "skipping this test")
+            def test_that_is_decorated_with_skipUnless(self):
+                self.fail()
+        result = Python26TestResult()
+        test = SkippingTest("test_that_is_decorated_with_skipUnless")
+        test.run(result)
+        self.assertEqual('addSuccess', result._events[1][0])
+
+
+class TestOnException(TestCase):
+
+    def test_default_works(self):
+        events = []
+        class Case(TestCase):
+            def method(self):
+                self.onException(an_exc_info)
+                events.append(True)
+        case = Case("method")
+        case.run()
+        self.assertThat(events, Equals([True]))
+
+    def test_added_handler_works(self):
+        events = []
+        class Case(TestCase):
+            def method(self):
+                self.addOnException(events.append)
+                self.onException(an_exc_info)
+        case = Case("method")
+        case.run()
+        self.assertThat(events, Equals([an_exc_info]))
+
+    def test_handler_that_raises_is_not_caught(self):
+        events = []
+        class Case(TestCase):
+            def method(self):
+                self.addOnException(events.index)
+                self.assertRaises(ValueError, self.onException, an_exc_info)
+        case = Case("method")
+        case.run()
+        self.assertThat(events, Equals([]))
+
+
+def test_suite():
+    from unittest import TestLoader
+    return TestLoader().loadTestsFromName(__name__)
diff --git a/lib/subunit/python/testtools/testsuite.py b/lib/subunit/python/testtools/testsuite.py
new file mode 100644
index 0000000000..26b193799b
--- /dev/null
+++ b/lib/subunit/python/testtools/testsuite.py
@@ -0,0 +1,74 @@
+# Copyright (c) 2009 Jonathan M. Lange. See LICENSE for details.
+
+"""Test suites and related things."""
+
+__metaclass__ = type
+__all__ = [
+  'ConcurrentTestSuite',
+  ]
+
+try:
+    import Queue
+except ImportError:
+    import queue as Queue
+import threading
+import unittest
+
+import testtools
+
+
+class ConcurrentTestSuite(unittest.TestSuite):
+    """A TestSuite whose run() calls out to a concurrency strategy."""
+
+    def __init__(self, suite, make_tests):
+        """Create a ConcurrentTestSuite to execute suite.
+
+        :param suite: A suite to run concurrently.
+        :param make_tests: A helper function to split the tests in the
+            ConcurrentTestSuite into some number of concurrently executing
+            sub-suites. make_tests must take a suite, and return an iterable
+            of TestCase-like object, each of which must have a run(result)
+            method.
+        """
+        super(ConcurrentTestSuite, self).__init__([suite])
+        self.make_tests = make_tests
+
+    def run(self, result):
+        """Run the tests concurrently.
+
+        This calls out to the provided make_tests helper, and then serialises
+        the results so that result only sees activity from one TestCase at
+        a time.
+
+        ConcurrentTestSuite provides no special mechanism to stop the tests
+        returned by make_tests, it is up to the make_tests to honour the
+        shouldStop attribute on the result object they are run with, which will
+        be set if an exception is raised in the thread which
+        ConcurrentTestSuite.run is called in.
+        """
+        tests = self.make_tests(self)
+        try:
+            threads = {}
+            queue = Queue.Queue()
+            result_semaphore = threading.Semaphore(1)
+            for test in tests:
+                process_result = testtools.ThreadsafeForwardingResult(result,
+                    result_semaphore)
+                reader_thread = threading.Thread(
+                    target=self._run_test, args=(test, process_result, queue))
+                threads[test] = reader_thread, process_result
+                reader_thread.start()
+            while threads:
+                finished_test = queue.get()
+                threads[finished_test][0].join()
+                del threads[finished_test]
+        except:
+            for thread, process_result in threads.values():
+                process_result.stop()
+            raise
+
+    def _run_test(self, test, process_result, queue):
+        try:
+            test.run(process_result)
+        finally:
+            queue.put(test)
diff --git a/lib/subunit/python/testtools/utils.py b/lib/subunit/python/testtools/utils.py
new file mode 100644
index 0000000000..325572297b
--- /dev/null
+++ b/lib/subunit/python/testtools/utils.py
@@ -0,0 +1,39 @@
+# Copyright (c) 2008 Jonathan M. Lange. See LICENSE for details.
+
+"""Utilities for dealing with stuff in unittest."""
+
+
+import sys
+
+__metaclass__ = type
+__all__ = [
+    'iterate_tests',
+    ]
+
+
+if sys.version_info > (3, 0):
+    def _u(s):
+        """Replacement for u'some string' in Python 3."""
+        return s
+    def _b(s):
+        """A byte literal."""
+        return s.encode("latin-1")
+    advance_iterator = next
+else:
+    def _u(s):
+        return unicode(s, "latin-1")
+    def _b(s):
+        return s
+    advance_iterator = lambda it: it.next()
+
+
+def iterate_tests(test_suite_or_case):
+    """Iterate through all of the test cases in `test_suite_or_case`."""
+    try:
+        suite = iter(test_suite_or_case)
+    except TypeError:
+        yield test_suite_or_case
+    else:
+        for test in suite:
+            for subtest in iterate_tests(test):
+                yield subtest