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authorAndrew Tridgell <tridge@samba.org>2010-10-01 21:10:39 -0700
committerAndrew Tridgell <tridge@samba.org>2010-10-01 22:31:58 -0700
commit018d23a2939b6dda41103764d6008b9809b7e192 (patch)
tree5336c9c9b413e541f60dbde18970b456ea169e26 /script
parent06b27e5e3dd35a8a9b7c76c20844a7ad064e1541 (diff)
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script: added bisect-test.py git bisect script
this can be used to work out what commit broke a set of tests
Diffstat (limited to 'script')
-rwxr-xr-xscript/bisect-test.py85
1 files changed, 85 insertions, 0 deletions
diff --git a/script/bisect-test.py b/script/bisect-test.py
new file mode 100755
index 0000000000..843c80dccf
--- /dev/null
+++ b/script/bisect-test.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+# use git bisect to work out what commit caused a test failure
+# Copyright Andrew Tridgell 2010
+# released under GNU GPL v3 or later
+
+
+from subprocess import call, check_call, Popen, PIPE
+import os, tempfile, sys
+from optparse import OptionParser
+
+parser = OptionParser()
+parser.add_option("", "--tests", help="list of tests to run", default='')
+parser.add_option("", "--good", help="known good revision (default HEAD)", default='HEAD')
+parser.add_option("", "--bad", help="known bad revision (default HEAD~100)", default='HEAD~100')
+parser.add_option("", "--skip-build-errors", help="skip revision where make fails", default=False)
+parser.add_option("", "--autogen", help="run autogen before each build",action="store_true", default=False)
+parser.add_option("", "--configure", help="run configure.developer before each build",
+ action="store_true", default=False)
+parser.add_option("", "--clean", help="run make clean before each build",
+ action="store_true", default=False)
+parser.add_option("-j", "", help="use make -j N", dest='N', type='int', action="store", default=1)
+
+(opts, args) = parser.parse_args()
+
+
+def run_cmd(cmd, dir=".", show=True, output=False, checkfail=True):
+ if show:
+ print("Running: '%s' in '%s'" % (cmd, dir))
+ if output:
+ return Popen([cmd], shell=True, stdout=PIPE, cwd=dir).communicate()[0]
+ elif checkfail:
+ return check_call(cmd, shell=True, cwd=dir)
+ else:
+ return call(cmd, shell=True, cwd=dir)
+
+def find_git_root():
+ '''get to the top of the git repo'''
+ p=os.getcwd()
+ while p != '/':
+ if os.path.isdir(os.path.join(p, ".git")):
+ return p
+ p = os.path.abspath(os.path.join(p, '..'))
+ return None
+
+cwd = os.getcwd()
+gitroot = find_git_root()
+
+# create a bisect script
+f = tempfile.NamedTemporaryFile(delete=False)
+f.write("set -x\n")
+f.write("cd %s || exit 125\n" % cwd)
+if opts.autogen:
+ f.write("./autogen.sh || exit 125\n")
+if opts.configure:
+ f.write("./configure.developer || exit 125\n")
+if opts.clean:
+ f.write("make clean || exit 125\n")
+if opts.skip_build_errors:
+ f.write("make -j %u || exit 125\n" % opts.N)
+else:
+ f.write("make -j %u || exit 1\n" % opts.N)
+f.write("make -j %u test TESTS='%s' FAIL_IMMEDIATELY=1 || exit 1\n" % (opts.N, opts.tests))
+f.write("exit 0\n")
+f.close()
+
+def cleanup():
+ run_cmd("git bisect reset", dir=gitroot)
+ os.unlink(f.name)
+ sys.exit(-1)
+
+# run bisect
+ret = -1
+try:
+ run_cmd("git bisect reset", dir=gitroot, show=False, checkfail=False)
+ run_cmd("git bisect start %s %s --" % (opts.good, opts.bad), dir=gitroot)
+ ret = run_cmd("git bisect run bash %s" % f.name, dir=gitroot, show=True, checkfail=False)
+except KeyboardInterrupt:
+ print("Cleaning up")
+ cleanup()
+except Exception, reason:
+ print("Failed bisect: %s" % reason)
+ cleanup()
+
+os.unlink(f.name)
+sys.exit(ret)