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Fixed #14427 -- Added --bisect and --pair flags to runtests.py, making it easier to find pairs of tests that fail when run together. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14079 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee 2010-10-09 14:44:54 +00:00
parent 03e7d64de4
commit 18c3ea5546
1 changed files with 134 additions and 21 deletions
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155
tests/runtests.py
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@ -1,6 +1,6 @@
#!/usr/bin/env python
import os, sys, traceback
import os, subprocess, sys, traceback
import unittest
import django.contrib as contrib
@ -85,16 +85,17 @@ class InvalidModelTestCase(unittest.TestCase):
self.assert_(not unexpected, "Unexpected Errors: " + '\n'.join(unexpected))
self.assert_(not missing, "Missing Errors: " + '\n'.join(missing))
def django_tests(verbosity, interactive, failfast, test_labels):
def setup(verbosity, test_labels):
from django.conf import settings
old_installed_apps = settings.INSTALLED_APPS
old_root_urlconf = getattr(settings, "ROOT_URLCONF", "")
old_template_dirs = settings.TEMPLATE_DIRS
old_use_i18n = settings.USE_I18N
old_login_url = settings.LOGIN_URL
old_language_code = settings.LANGUAGE_CODE
old_middleware_classes = settings.MIDDLEWARE_CLASSES
state = {
'INSTALLED_APPS': settings.INSTALLED_APPS,
'ROOT_URLCONF': getattr(settings, "ROOT_URLCONF", ""),
'TEMPLATE_DIRS': settings.TEMPLATE_DIRS,
'USE_I18N': settings.USE_I18N,
'LOGIN_URL': settings.LOGIN_URL,
'LANGUAGE_CODE': settings.LANGUAGE_CODE,
'MIDDLEWARE_CLASSES': settings.MIDDLEWARE_CLASSES,
}
# Redirect some settings for the duration of these tests.
settings.INSTALLED_APPS = ALWAYS_INSTALLED_APPS
@ -136,6 +137,18 @@ def django_tests(verbosity, interactive, failfast, test_labels):
if model_label not in settings.INSTALLED_APPS:
settings.INSTALLED_APPS.append(model_label)
return state
def teardown(state):
from django.conf import settings
# Restore the old settings.
for key, value in state.items():
setattr(settings, key, value)
def django_tests(verbosity, interactive, failfast, test_labels):
from django.conf import settings
state = setup(verbosity, test_labels)
# Add tests for invalid models.
extra_tests = []
for model_dir, model_name in get_invalid_models():
@ -169,17 +182,105 @@ def django_tests(verbosity, interactive, failfast, test_labels):
test_runner = TestRunner(verbosity=verbosity, interactive=interactive, failfast=failfast)
failures = test_runner.run_tests(test_labels, extra_tests=extra_tests)
if failures:
sys.exit(bool(failures))
teardown(state)
return failures
# Restore the old settings.
settings.INSTALLED_APPS = old_installed_apps
settings.ROOT_URLCONF = old_root_urlconf
settings.TEMPLATE_DIRS = old_template_dirs
settings.USE_I18N = old_use_i18n
settings.LANGUAGE_CODE = old_language_code
settings.LOGIN_URL = old_login_url
settings.MIDDLEWARE_CLASSES = old_middleware_classes
def bisect_tests(bisection_label, options, test_labels):
state = setup(int(options.verbosity), test_labels)
if not test_labels:
# Get the full list of test labels to use for bisection
from django.db.models.loading import get_apps
test_labels = [app.__name__.split('.')[-2] for app in get_apps()]
print '***** Bisecting test suite:',' '.join(test_labels)
# Make sure the bisection point isn't in the test list
# Also remove tests that need to be run in specific combinations
for label in [bisection_label, 'model_inheritance_same_model_name']:
try:
test_labels.remove(label)
except ValueError:
pass
subprocess_args = ['python','runtests.py', '--settings=%s' % options.settings]
if options.failfast:
subprocess_args.append('--failfast')
if options.verbosity:
subprocess_args.append('--verbosity=%s' % options.verbosity)
if not options.interactive:
subprocess_args.append('--noinput')
iteration = 1
while len(test_labels) > 1:
midpoint = len(test_labels)/2
test_labels_a = test_labels[:midpoint] + [bisection_label]
test_labels_b = test_labels[midpoint:] + [bisection_label]
print '***** Pass %da: Running the first half of the test suite' % iteration
print '***** Test labels:',' '.join(test_labels_a)
failures_a = subprocess.call(subprocess_args + test_labels_a)
print '***** Pass %db: Running the second half of the test suite' % iteration
print '***** Test labels:',' '.join(test_labels_b)
print
failures_b = subprocess.call(subprocess_args + test_labels_b)
if failures_a and not failures_b:
print "***** Problem found in first half. Bisecting again..."
iteration = iteration + 1
test_labels = test_labels_a[:-1]
elif failures_b and not failures_a:
print "***** Problem found in second half. Bisecting again..."
iteration = iteration + 1
test_labels = test_labels_b[:-1]
elif failures_a and failures_b:
print "***** Multiple sources of failure found"
break
else:
print "***** No source of failure found... try pair execution (--pair)"
break
if len(test_labels) == 1:
print "***** Source of error:",test_labels[0]
teardown(state)
def paired_tests(paired_test, options, test_labels):
state = setup(int(options.verbosity), test_labels)
if not test_labels:
print ""
# Get the full list of test labels to use for bisection
from django.db.models.loading import get_apps
test_labels = [app.__name__.split('.')[-2] for app in get_apps()]
print '***** Trying paired execution'
# Make sure the bisection point isn't in the test list
# Also remove tests that need to be run in specific combinations
for label in [paired_test, 'model_inheritance_same_model_name']:
try:
test_labels.remove(label)
except ValueError:
pass
subprocess_args = ['python','runtests.py', '--settings=%s' % options.settings]
if options.failfast:
subprocess_args.append('--failfast')
if options.verbosity:
subprocess_args.append('--verbosity=%s' % options.verbosity)
if not options.interactive:
subprocess_args.append('--noinput')
for i, label in enumerate(test_labels):
print '***** %d of %d: Check test pairing with %s' % (i+1, len(test_labels), label)
failures = subprocess.call(subprocess_args + [label, paired_test])
if failures:
print '***** Found problem pair with',label
return
print '***** No problem pair found'
teardown(state)
if __name__ == "__main__":
from optparse import OptionParser
@ -194,10 +295,22 @@ if __name__ == "__main__":
help='Tells Django to stop running the test suite after first failed test.')
parser.add_option('--settings',
help='Python path to settings module, e.g. "myproject.settings". If this isn\'t provided, the DJANGO_SETTINGS_MODULE environment variable will be used.')
parser.add_option('--bisect', action='store', dest='bisect', default=None,
help="Bisect the test suite to discover a test that causes a test failure when combined with the named test.")
parser.add_option('--pair', action='store', dest='pair', default=None,
help="Run the test suite in pairs with the named test to find problem pairs.")
options, args = parser.parse_args()
if options.settings:
os.environ['DJANGO_SETTINGS_MODULE'] = options.settings
elif "DJANGO_SETTINGS_MODULE" not in os.environ:
parser.error("DJANGO_SETTINGS_MODULE is not set in the environment. "
"Set it or use --settings.")
django_tests(int(options.verbosity), options.interactive, options.failfast, args)
if options.bisect:
bisect_tests(options.bisect, options, args)
elif options.pair:
paired_tests(options.pair, options, args)
else:
failures = django_tests(int(options.verbosity), options.interactive, options.failfast, args)
if failures:
sys.exit(bool(failures))