cpython/Lib/unittest/test/test_break.py

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import gc
import io
import os
import sys
import signal
import weakref
import unittest
@unittest.skipUnless(hasattr(os, 'kill'), "Test requires os.kill")
@unittest.skipIf(sys.platform =="win32", "Test cannot run on Windows")
@unittest.skipIf(sys.platform == 'freebsd6', "Test kills regrtest on freebsd6 "
"if threads have been used")
class TestBreak(unittest.TestCase):
int_handler = None
def setUp(self):
self._default_handler = signal.getsignal(signal.SIGINT)
if self.int_handler is not None:
signal.signal(signal.SIGINT, self.int_handler)
def tearDown(self):
signal.signal(signal.SIGINT, self._default_handler)
unittest.signals._results = weakref.WeakKeyDictionary()
unittest.signals._interrupt_handler = None
def testInstallHandler(self):
default_handler = signal.getsignal(signal.SIGINT)
unittest.installHandler()
self.assertNotEqual(signal.getsignal(signal.SIGINT), default_handler)
try:
pid = os.getpid()
os.kill(pid, signal.SIGINT)
except KeyboardInterrupt:
self.fail("KeyboardInterrupt not handled")
self.assertTrue(unittest.signals._interrupt_handler.called)
def testRegisterResult(self):
result = unittest.TestResult()
unittest.registerResult(result)
for ref in unittest.signals._results:
if ref is result:
break
elif ref is not result:
self.fail("odd object in result set")
else:
self.fail("result not found")
def testInterruptCaught(self):
default_handler = signal.getsignal(signal.SIGINT)
result = unittest.TestResult()
unittest.installHandler()
unittest.registerResult(result)
self.assertNotEqual(signal.getsignal(signal.SIGINT), default_handler)
def test(result):
pid = os.getpid()
os.kill(pid, signal.SIGINT)
result.breakCaught = True
self.assertTrue(result.shouldStop)
try:
test(result)
except KeyboardInterrupt:
self.fail("KeyboardInterrupt not handled")
self.assertTrue(result.breakCaught)
def testSecondInterrupt(self):
# Can't use skipIf decorator because the signal handler may have
# been changed after defining this method.
if signal.getsignal(signal.SIGINT) == signal.SIG_IGN:
self.skipTest("test requires SIGINT to not be ignored")
result = unittest.TestResult()
unittest.installHandler()
unittest.registerResult(result)
def test(result):
pid = os.getpid()
os.kill(pid, signal.SIGINT)
result.breakCaught = True
self.assertTrue(result.shouldStop)
os.kill(pid, signal.SIGINT)
self.fail("Second KeyboardInterrupt not raised")
try:
test(result)
except KeyboardInterrupt:
pass
else:
self.fail("Second KeyboardInterrupt not raised")
self.assertTrue(result.breakCaught)
def testTwoResults(self):
unittest.installHandler()
result = unittest.TestResult()
unittest.registerResult(result)
new_handler = signal.getsignal(signal.SIGINT)
result2 = unittest.TestResult()
unittest.registerResult(result2)
self.assertEqual(signal.getsignal(signal.SIGINT), new_handler)
result3 = unittest.TestResult()
def test(result):
pid = os.getpid()
os.kill(pid, signal.SIGINT)
try:
test(result)
except KeyboardInterrupt:
self.fail("KeyboardInterrupt not handled")
self.assertTrue(result.shouldStop)
self.assertTrue(result2.shouldStop)
self.assertFalse(result3.shouldStop)
def testHandlerReplacedButCalled(self):
# Can't use skipIf decorator because the signal handler may have
# been changed after defining this method.
if signal.getsignal(signal.SIGINT) == signal.SIG_IGN:
self.skipTest("test requires SIGINT to not be ignored")
# If our handler has been replaced (is no longer installed) but is
# called by the *new* handler, then it isn't safe to delay the
# SIGINT and we should immediately delegate to the default handler
unittest.installHandler()
handler = signal.getsignal(signal.SIGINT)
def new_handler(frame, signum):
handler(frame, signum)
signal.signal(signal.SIGINT, new_handler)
try:
pid = os.getpid()
os.kill(pid, signal.SIGINT)
except KeyboardInterrupt:
pass
else:
self.fail("replaced but delegated handler doesn't raise interrupt")
def testRunner(self):
# Creating a TextTestRunner with the appropriate argument should
# register the TextTestResult it creates
runner = unittest.TextTestRunner(stream=io.StringIO())
result = runner.run(unittest.TestSuite())
self.assertIn(result, unittest.signals._results)
def testWeakReferences(self):
# Calling registerResult on a result should not keep it alive
result = unittest.TestResult()
unittest.registerResult(result)
ref = weakref.ref(result)
del result
# For non-reference counting implementations
gc.collect();gc.collect()
self.assertIsNone(ref())
def testRemoveResult(self):
result = unittest.TestResult()
unittest.registerResult(result)
unittest.installHandler()
self.assertTrue(unittest.removeResult(result))
# Should this raise an error instead?
self.assertFalse(unittest.removeResult(unittest.TestResult()))
try:
pid = os.getpid()
os.kill(pid, signal.SIGINT)
except KeyboardInterrupt:
pass
self.assertFalse(result.shouldStop)
def testMainInstallsHandler(self):
failfast = object()
test = object()
verbosity = object()
result = object()
default_handler = signal.getsignal(signal.SIGINT)
class FakeRunner(object):
initArgs = []
runArgs = []
def __init__(self, *args, **kwargs):
self.initArgs.append((args, kwargs))
def run(self, test):
self.runArgs.append(test)
return result
class Program(unittest.TestProgram):
def __init__(self, catchbreak):
self.exit = False
self.verbosity = verbosity
self.failfast = failfast
self.catchbreak = catchbreak
self.tb_locals = False
self.testRunner = FakeRunner
self.test = test
self.result = None
p = Program(False)
p.runTests()
Merged revisions 79464,79471,79623,79626,79630,79632,79643,79648-79649,79679,79685,79711,79761,79774,79777,79792-79794,79877,79898-79900 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r79464 | michael.foord | 2010-03-27 07:55:19 -0500 (Sat, 27 Mar 2010) | 1 line A fix for running unittest tests on platforms without the audioop module (e.g. jython and IronPython) ........ r79471 | michael.foord | 2010-03-27 14:10:11 -0500 (Sat, 27 Mar 2010) | 4 lines Addition of delta keyword argument to unittest.TestCase.assertAlmostEquals and assertNotAlmostEquals This allows the comparison of objects by specifying a maximum difference; this includes the comparing of non-numeric objects that don't support rounding. ........ r79623 | michael.foord | 2010-04-02 16:42:47 -0500 (Fri, 02 Apr 2010) | 1 line Addition of -b command line option to unittest for buffering stdout and stderr during test runs. ........ r79626 | michael.foord | 2010-04-02 17:08:29 -0500 (Fri, 02 Apr 2010) | 1 line TestResult stores original sys.stdout and tests no longer use sys.__stdout__ (etc) in tests for unittest -b command line option ........ r79630 | michael.foord | 2010-04-02 17:30:56 -0500 (Fri, 02 Apr 2010) | 1 line unittest tests no longer replace the sys.stdout put in place by regrtest ........ r79632 | michael.foord | 2010-04-02 17:55:59 -0500 (Fri, 02 Apr 2010) | 1 line Issue #8038: Addition of unittest.TestCase.assertNotRegexpMatches ........ r79643 | michael.foord | 2010-04-02 20:15:21 -0500 (Fri, 02 Apr 2010) | 1 line Support dotted module names for test discovery paths in unittest. Issue 8038. ........ r79648 | michael.foord | 2010-04-02 21:21:39 -0500 (Fri, 02 Apr 2010) | 1 line Cross platform unittest.TestResult newline handling when buffering stdout / stderr. ........ r79649 | michael.foord | 2010-04-02 21:33:55 -0500 (Fri, 02 Apr 2010) | 1 line Another attempt at a fix for unittest.test.test_result for windows line endings ........ r79679 | michael.foord | 2010-04-03 09:52:18 -0500 (Sat, 03 Apr 2010) | 1 line Adding -b command line option to the unittest usage message. ........ r79685 | michael.foord | 2010-04-03 10:20:00 -0500 (Sat, 03 Apr 2010) | 1 line Minor tweak to unittest command line usage message ........ r79711 | michael.foord | 2010-04-03 12:03:11 -0500 (Sat, 03 Apr 2010) | 1 line Documenting new features in unittest ........ r79761 | michael.foord | 2010-04-04 17:41:54 -0500 (Sun, 04 Apr 2010) | 1 line unittest documentation formatting changes ........ r79774 | michael.foord | 2010-04-04 18:28:44 -0500 (Sun, 04 Apr 2010) | 1 line Adding documentation for new unittest.main() parameters ........ r79777 | michael.foord | 2010-04-04 19:39:50 -0500 (Sun, 04 Apr 2010) | 1 line Document signal handling functions in unittest.rst ........ r79792 | michael.foord | 2010-04-05 05:26:26 -0500 (Mon, 05 Apr 2010) | 1 line Documentation fixes for unittest ........ r79793 | michael.foord | 2010-04-05 05:28:27 -0500 (Mon, 05 Apr 2010) | 1 line Furterh documentation fix for unittest.rst ........ r79794 | michael.foord | 2010-04-05 05:30:14 -0500 (Mon, 05 Apr 2010) | 1 line Further documentation fix for unittest.rst ........ r79877 | michael.foord | 2010-04-06 18:18:16 -0500 (Tue, 06 Apr 2010) | 1 line Fix module directory finding logic for dotted paths in unittest test discovery. ........ r79898 | michael.foord | 2010-04-07 18:04:22 -0500 (Wed, 07 Apr 2010) | 1 line unittest.result.TestResult does not create its buffers until they're used. It uses StringIO not cStringIO. Issue 8333. ........ r79899 | michael.foord | 2010-04-07 19:04:24 -0500 (Wed, 07 Apr 2010) | 1 line Switch regrtest to use StringIO instead of cStringIO for test_multiprocessing on Windows. Issue 8333. ........ r79900 | michael.foord | 2010-04-07 23:33:20 -0500 (Wed, 07 Apr 2010) | 1 line Correction of unittest documentation typos and omissions ........
2010-04-11 17:43:16 -03:00
self.assertEqual(FakeRunner.initArgs, [((), {'buffer': None,
'verbosity': verbosity,
'failfast': failfast,
'tb_locals': False,
'warnings': None})])
self.assertEqual(FakeRunner.runArgs, [test])
self.assertEqual(p.result, result)
self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)
FakeRunner.initArgs = []
FakeRunner.runArgs = []
p = Program(True)
p.runTests()
Merged revisions 79464,79471,79623,79626,79630,79632,79643,79648-79649,79679,79685,79711,79761,79774,79777,79792-79794,79877,79898-79900 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r79464 | michael.foord | 2010-03-27 07:55:19 -0500 (Sat, 27 Mar 2010) | 1 line A fix for running unittest tests on platforms without the audioop module (e.g. jython and IronPython) ........ r79471 | michael.foord | 2010-03-27 14:10:11 -0500 (Sat, 27 Mar 2010) | 4 lines Addition of delta keyword argument to unittest.TestCase.assertAlmostEquals and assertNotAlmostEquals This allows the comparison of objects by specifying a maximum difference; this includes the comparing of non-numeric objects that don't support rounding. ........ r79623 | michael.foord | 2010-04-02 16:42:47 -0500 (Fri, 02 Apr 2010) | 1 line Addition of -b command line option to unittest for buffering stdout and stderr during test runs. ........ r79626 | michael.foord | 2010-04-02 17:08:29 -0500 (Fri, 02 Apr 2010) | 1 line TestResult stores original sys.stdout and tests no longer use sys.__stdout__ (etc) in tests for unittest -b command line option ........ r79630 | michael.foord | 2010-04-02 17:30:56 -0500 (Fri, 02 Apr 2010) | 1 line unittest tests no longer replace the sys.stdout put in place by regrtest ........ r79632 | michael.foord | 2010-04-02 17:55:59 -0500 (Fri, 02 Apr 2010) | 1 line Issue #8038: Addition of unittest.TestCase.assertNotRegexpMatches ........ r79643 | michael.foord | 2010-04-02 20:15:21 -0500 (Fri, 02 Apr 2010) | 1 line Support dotted module names for test discovery paths in unittest. Issue 8038. ........ r79648 | michael.foord | 2010-04-02 21:21:39 -0500 (Fri, 02 Apr 2010) | 1 line Cross platform unittest.TestResult newline handling when buffering stdout / stderr. ........ r79649 | michael.foord | 2010-04-02 21:33:55 -0500 (Fri, 02 Apr 2010) | 1 line Another attempt at a fix for unittest.test.test_result for windows line endings ........ r79679 | michael.foord | 2010-04-03 09:52:18 -0500 (Sat, 03 Apr 2010) | 1 line Adding -b command line option to the unittest usage message. ........ r79685 | michael.foord | 2010-04-03 10:20:00 -0500 (Sat, 03 Apr 2010) | 1 line Minor tweak to unittest command line usage message ........ r79711 | michael.foord | 2010-04-03 12:03:11 -0500 (Sat, 03 Apr 2010) | 1 line Documenting new features in unittest ........ r79761 | michael.foord | 2010-04-04 17:41:54 -0500 (Sun, 04 Apr 2010) | 1 line unittest documentation formatting changes ........ r79774 | michael.foord | 2010-04-04 18:28:44 -0500 (Sun, 04 Apr 2010) | 1 line Adding documentation for new unittest.main() parameters ........ r79777 | michael.foord | 2010-04-04 19:39:50 -0500 (Sun, 04 Apr 2010) | 1 line Document signal handling functions in unittest.rst ........ r79792 | michael.foord | 2010-04-05 05:26:26 -0500 (Mon, 05 Apr 2010) | 1 line Documentation fixes for unittest ........ r79793 | michael.foord | 2010-04-05 05:28:27 -0500 (Mon, 05 Apr 2010) | 1 line Furterh documentation fix for unittest.rst ........ r79794 | michael.foord | 2010-04-05 05:30:14 -0500 (Mon, 05 Apr 2010) | 1 line Further documentation fix for unittest.rst ........ r79877 | michael.foord | 2010-04-06 18:18:16 -0500 (Tue, 06 Apr 2010) | 1 line Fix module directory finding logic for dotted paths in unittest test discovery. ........ r79898 | michael.foord | 2010-04-07 18:04:22 -0500 (Wed, 07 Apr 2010) | 1 line unittest.result.TestResult does not create its buffers until they're used. It uses StringIO not cStringIO. Issue 8333. ........ r79899 | michael.foord | 2010-04-07 19:04:24 -0500 (Wed, 07 Apr 2010) | 1 line Switch regrtest to use StringIO instead of cStringIO for test_multiprocessing on Windows. Issue 8333. ........ r79900 | michael.foord | 2010-04-07 23:33:20 -0500 (Wed, 07 Apr 2010) | 1 line Correction of unittest documentation typos and omissions ........
2010-04-11 17:43:16 -03:00
self.assertEqual(FakeRunner.initArgs, [((), {'buffer': None,
'verbosity': verbosity,
'failfast': failfast,
'tb_locals': False,
'warnings': None})])
self.assertEqual(FakeRunner.runArgs, [test])
self.assertEqual(p.result, result)
self.assertNotEqual(signal.getsignal(signal.SIGINT), default_handler)
def testRemoveHandler(self):
default_handler = signal.getsignal(signal.SIGINT)
unittest.installHandler()
unittest.removeHandler()
self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)
# check that calling removeHandler multiple times has no ill-effect
unittest.removeHandler()
self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)
def testRemoveHandlerAsDecorator(self):
default_handler = signal.getsignal(signal.SIGINT)
unittest.installHandler()
@unittest.removeHandler
def test():
self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)
test()
self.assertNotEqual(signal.getsignal(signal.SIGINT), default_handler)
@unittest.skipUnless(hasattr(os, 'kill'), "Test requires os.kill")
@unittest.skipIf(sys.platform =="win32", "Test cannot run on Windows")
@unittest.skipIf(sys.platform == 'freebsd6', "Test kills regrtest on freebsd6 "
"if threads have been used")
class TestBreakDefaultIntHandler(TestBreak):
int_handler = signal.default_int_handler
@unittest.skipUnless(hasattr(os, 'kill'), "Test requires os.kill")
@unittest.skipIf(sys.platform =="win32", "Test cannot run on Windows")
@unittest.skipIf(sys.platform == 'freebsd6', "Test kills regrtest on freebsd6 "
"if threads have been used")
class TestBreakSignalIgnored(TestBreak):
int_handler = signal.SIG_IGN
@unittest.skipUnless(hasattr(os, 'kill'), "Test requires os.kill")
@unittest.skipIf(sys.platform =="win32", "Test cannot run on Windows")
@unittest.skipIf(sys.platform == 'freebsd6', "Test kills regrtest on freebsd6 "
"if threads have been used")
class TestBreakSignalDefault(TestBreak):
int_handler = signal.SIG_DFL
if __name__ == "__main__":
unittest.main()