def test_runUntilFailure(self):
"""
L{DistTrialRunner} can run in C{untilFailure} mode where it will run
the given tests until they fail.
"""
called = []
class FakeReactorWithSuccess(FakeReactor):
def spawnProcess(self, worker, *args, **kwargs):
worker.makeConnection(FakeTransport())
self.spawnCount += 1
worker._ampProtocol.run = self.succeedingRun
def succeedingRun(self, case, result):
called.append(None)
if len(called) == 5:
return fail(RuntimeError("oops"))
return succeed(None)
fakeReactor = FakeReactorWithSuccess()
scheduler = FakeScheduler()
cooperator = Cooperator(scheduler=scheduler)
result = self.runner.run(
TestCase(), fakeReactor, cooperate=cooperator.cooperate,
untilFailure=True)
scheduler.pump()
self.assertEqual(5, len(called))
self.assertFalse(result.wasSuccessful())
output = self.runner._stream.getvalue()
self.assertIn("PASSED", output)
self.assertIn("FAIL", output)
def test_runUnexpectedError(self):
"""
If for some reasons we can't connect to the worker process, the test
suite catches and fails.
"""
class FakeReactorWithFail(FakeReactor):
def spawnProcess(self, worker, *args, **kwargs):
worker.makeConnection(FakeTransport())
self.spawnCount += 1
worker._ampProtocol.run = self.failingRun
def failingRun(self, case, result):
return fail(RuntimeError("oops"))
scheduler = FakeScheduler()
cooperator = Cooperator(scheduler=scheduler)
fakeReactor = FakeReactorWithFail()
result = self.runner.run(TestCase(), fakeReactor,
cooperator.cooperate)
self.assertEqual(fakeReactor.runCount, 1)
self.assertEqual(fakeReactor.spawnCount, 1)
scheduler.pump()
self.assertEqual(1, len(result.original.failures))
def getFakeSchedulerAndEternalCooperator(self):
"""
Helper to create fake scheduler and cooperator in tests.
The cooperator has a termination timer which will never inform
the scheduler that the task needs to be terminated.
@return: L{tuple} of (scheduler, cooperator)
"""
scheduler = FakeScheduler()
cooperator = Cooperator(
scheduler=scheduler,
terminationPredicateFactory=EternalTerminationPredicateFactory,
)
return scheduler, cooperator
class DistTrialRunnerTestCase(TestCase):
"""
Tests for L{DistTrialRunner}.
"""
def setUp(self):
"""
Create a runner for testing.
"""
self.runner = DistTrialRunner(TreeReporter, 4, [],
workingDirectory=self.mktemp())
self.runner._stream = StringIO()
def test_writeResults(self):
"""
L{DistTrialRunner.writeResults} writes to the stream specified in the
init.
"""
stringIO = StringIO()
result = DistReporter(Reporter(stringIO))
self.runner.writeResults(result)
self.assertTrue(stringIO.tell() > 0)
def test_createLocalWorkers(self):
"""
C{createLocalWorkers} iterates the list of protocols and create one
L{LocalWorker} for each.
"""
protocols = [object() for x in xrange(4)]
workers = self.runner.createLocalWorkers(protocols, "path")
for s in workers:
self.assertIsInstance(s, LocalWorker)
self.assertEqual(4, len(workers))
def test_launchWorkerProcesses(self):
"""
Given a C{spawnProcess} function, C{launchWorkerProcess} launches a
python process with a existing path as its argument.
"""
protocols = [ProcessProtocol() for i in range(4)]
arguments = []
environment = {}
def fakeSpawnProcess(processProtocol, executable, args=(), env={},
path=None, uid=None, gid=None, usePTY=0,
childFDs=None):
arguments.append(executable)
arguments.extend(args)
environment.update(env)
self.runner.launchWorkerProcesses(
fakeSpawnProcess, protocols, ["foo"])
self.assertEqual(arguments[0], arguments[1])
self.assertTrue(os.path.exists(arguments[2]))
self.assertEqual("foo", arguments[3])
self.assertEqual(os.pathsep.join(sys.path),
environment["TRIAL_PYTHONPATH"])
def test_run(self):
"""
C{run} starts the reactor exactly once and spawns each of the workers
exactly once.
"""
fakeReactor = FakeReactor()
suite = TrialSuite()
for i in xrange(10):
suite.addTest(TestCase())
self.runner.run(suite, fakeReactor)
self.assertEqual(fakeReactor.runCount, 1)
self.assertEqual(fakeReactor.spawnCount, self.runner._workerNumber)
def test_runUsedDirectory(self):
"""
L{DistTrialRunner} checks if the test directory is already locked, and
if it is generates a name based on it.
"""
class FakeReactorWithLock(FakeReactor):
def spawnProcess(oself, worker, *args, **kwargs):
self.assertEqual(os.path.abspath(worker._logDirectory),
os.path.abspath(
os.path.join(workingDirectory + "-1",
str(oself.spawnCount))))
localLock = FilesystemLock(workingDirectory + "-1.lock")
self.assertFalse(localLock.lock())
oself.spawnCount += 1
worker.makeConnection(FakeTransport())
worker._ampProtocol.run = lambda *args: succeed(None)
newDirectory = self.mktemp()
os.mkdir(newDirectory)
workingDirectory = os.path.join(newDirectory, "_trial_temp")
lock = FilesystemLock(workingDirectory + ".lock")
lock.lock()
self.addCleanup(lock.unlock)
self.runner._workingDirectory = workingDirectory
fakeReactor = FakeReactorWithLock()
suite = TrialSuite()
for i in xrange(10):
suite.addTest(TestCase())
self.runner.run(suite, fakeReactor)
def test_minimalWorker(self):
"""
L{DistTrialRunner} doesn't try to start more workers than the number of
tests.
"""
fakeReactor = FakeReactor()
self.runner.run(TestCase(), fakeReactor)
self.assertEqual(fakeReactor.runCount, 1)
self.assertEqual(fakeReactor.spawnCount, 1)
def test_runUncleanWarnings(self):
"""
Running with the C{unclean-warnings} option makes L{DistTrialRunner}
uses the L{UncleanWarningsReporterWrapper}.
"""
fakeReactor = FakeReactor()
self.runner._uncleanWarnings = True
result = self.runner.run(TestCase(), fakeReactor)
self.assertIsInstance(result, DistReporter)
self.assertIsInstance(result.original,
UncleanWarningsReporterWrapper)
def test_runWithoutTest(self):
"""
When the suite contains no test, L{DistTrialRunner} takes a shortcut
path without launching any process or starting the reactor.
"""
fakeReactor = object()
suite = TrialSuite()
result = self.runner.run(suite, fakeReactor)
self.assertIsInstance(result, DistReporter)
output = self.runner._stream.getvalue()
self.assertIn("Running 0 test", output)
self.assertIn("PASSED", output)
def test_runWithoutTestButWithAnError(self):
"""
Even if there is no test, the suite can contain an error (most likely,
an import error): this should make the run fail, and the error should
be printed.
"""
fakeReactor = object()
error = ErrorHolder("an error", Failure(RuntimeError("foo bar")))
result = self.runner.run(error, fakeReactor)
self.assertIsInstance(result, DistReporter)
output = self.runner._stream.getvalue()
self.assertIn("Running 0 test", output)
self.assertIn("foo bar", output)
self.assertIn("an error", output)
self.assertIn("errors=1", output)
self.assertIn("FAILED", output)
def test_runUnexpectedError(self):
"""
If for some reasons we can't connect to the worker process, the test
suite catches and fails.
"""
class FakeReactorWithFail(FakeReactor):
def spawnProcess(self, worker, *args, **kwargs):
worker.makeConnection(FakeTransport())
self.spawnCount += 1
worker._ampProtocol.run = self.failingRun
def failingRun(self, case, result):
return fail(RuntimeError("oops"))
scheduler = FakeScheduler()
cooperator = Cooperator(scheduler=scheduler)
fakeReactor = FakeReactorWithFail()
result = self.runner.run(TestCase(), fakeReactor,
cooperator.cooperate)
self.assertEqual(fakeReactor.runCount, 1)
self.assertEqual(fakeReactor.spawnCount, 1)
scheduler.pump()
self.assertEqual(1, len(result.original.failures))
"""
called = []
class FakeReactorWithSuccess(FakeReactor):
def spawnProcess(self, worker, *args, **kwargs):
worker.makeConnection(FakeTransport())
self.spawnCount += 1
worker._ampProtocol.run = self.succeedingRun
def succeedingRun(self, case, result):
called.append(None)
if len(called) == 5:
return fail(RuntimeError("oops"))
return succeed(None)
fakeReactor = FakeReactorWithSuccess()
scheduler = FakeScheduler()
cooperator = Cooperator(scheduler=scheduler)
result = self.runner.run(
TestCase(), fakeReactor, cooperate=cooperator.cooperate,
untilFailure=True)
scheduler.pump()
self.assertEqual(5, len(called))
self.assertFalse(result.wasSuccessful())
output = self.runner._stream.getvalue()
self.assertIn("PASSED", output)
self.assertIn("FAIL", output)