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# 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 (
Annotate,
Equals,
DocTestMatches,
Is,
LessThan,
MatchesAny,
MatchesAll,
Mismatch,
Not,
NotEquals,
)
# Silence pyflakes.
Matcher
class TestMismatch(TestCase):
def test_constructor_arguments(self):
mismatch = Mismatch("some description", {'detail': "things"})
self.assertEqual("some description", mismatch.describe())
self.assertEqual({'detail': "things"}, mismatch.get_details())
def test_constructor_no_arguments(self):
mismatch = Mismatch()
self.assertRaises(NotImplementedError, mismatch.describe)
self.assertEqual({}, mismatch.get_details())
class TestMatchersInterface(object):
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())
def test_mismatch_details(self):
# The mismatch object must provide get_details, which must return a
# dictionary mapping names to Content objects.
examples = self.describe_examples
for difference, matchee, matcher in examples:
mismatch = matcher.match(matchee)
details = mismatch.get_details()
self.assertEqual(dict(details), details)
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 TestNotEqualsInterface(TestCase, TestMatchersInterface):
matches_matcher = NotEquals(1)
matches_matches = [2]
matches_mismatches = [1]
str_examples = [
("NotEquals(1)", NotEquals(1)), ("NotEquals('1')", NotEquals('1'))]
describe_examples = [("1 == 1", 1, NotEquals(1))]
class TestIsInterface(TestCase, TestMatchersInterface):
foo = object()
bar = object()
matches_matcher = Is(foo)
matches_matches = [foo]
matches_mismatches = [bar, 1]
str_examples = [("Is(2)", Is(2))]
describe_examples = [("1 is not 2", 2, Is(1))]
class TestLessThanInterface(TestCase, TestMatchersInterface):
matches_matcher = LessThan(4)
matches_matches = [-5, 3]
matches_mismatches = [4, 5, 5000]
str_examples = [
("LessThan(12)", LessThan(12)),
]
describe_examples = [('4 is >= 4', 4, LessThan(4))]
class TestNotInterface(TestCase, TestMatchersInterface):
matches_matcher = Not(Equals(1))
matches_matches = [2]
matches_mismatches = [1]
str_examples = [
("Not(Equals(1))", Not(Equals(1))),
("Not(Equals('1'))", Not(Equals('1')))]
describe_examples = [('1 matches Equals(1)', 1, Not(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")))]
class TestMatchesAllInterface(TestCase, TestMatchersInterface):
matches_matcher = MatchesAll(NotEquals(1), NotEquals(2))
matches_matches = [3, 4]
matches_mismatches = [1, 2]
str_examples = [
("MatchesAll(NotEquals(1), NotEquals(2))",
MatchesAll(NotEquals(1), NotEquals(2)))]
describe_examples = [("""Differences: [
1 == 1
]
""",
1, MatchesAll(NotEquals(1), NotEquals(2)))]
class TestAnnotate(TestCase, TestMatchersInterface):
matches_matcher = Annotate("foo", Equals(1))
matches_matches = [1]
matches_mismatches = [2]
str_examples = [
("Annotate('foo', Equals(1))", Annotate("foo", Equals(1)))]
describe_examples = [("1 != 2: foo", 2, Annotate('foo', Equals(1)))]
def test_suite():
from unittest import TestLoader
return TestLoader().loadTestsFromName(__name__)
|
