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""" discovery and running of std-library "unittest" style tests. """
from __future__ import absolute_import
import sys
import traceback
import pytest
# for transfering markers
import _pytest._code
from _pytest.python import transfer_markers
from _pytest.skipping import MarkEvaluator
def pytest_pycollect_makeitem(collector, name, obj):
# has unittest been imported and is obj a subclass of its TestCase?
try:
if not issubclass(obj, sys.modules["unittest"].TestCase):
return
except Exception:
return
# yes, so let's collect it
return UnitTestCase(name, parent=collector)
class UnitTestCase(pytest.Class):
# marker for fixturemanger.getfixtureinfo()
# to declare that our children do not support funcargs
nofuncargs = True
def setup(self):
cls = self.obj
if getattr(cls, '__unittest_skip__', False):
return # skipped
setup = getattr(cls, 'setUpClass', None)
if setup is not None:
setup()
teardown = getattr(cls, 'tearDownClass', None)
if teardown is not None:
self.addfinalizer(teardown)
super(UnitTestCase, self).setup()
def collect(self):
from unittest import TestLoader
cls = self.obj
if not getattr(cls, "__test__", True):
return
self.session._fixturemanager.parsefactories(self, unittest=True)
loader = TestLoader()
module = self.getparent(pytest.Module).obj
foundsomething = False
for name in loader.getTestCaseNames(self.obj):
x = getattr(self.obj, name)
if not getattr(x, '__test__', True):
continue
funcobj = getattr(x, 'im_func', x)
transfer_markers(funcobj, cls, module)
yield TestCaseFunction(name, parent=self)
foundsomething = True
if not foundsomething:
runtest = getattr(self.obj, 'runTest', None)
if runtest is not None:
ut = sys.modules.get("twisted.trial.unittest", None)
if ut is None or runtest != ut.TestCase.runTest:
yield TestCaseFunction('runTest', parent=self)
class TestCaseFunction(pytest.Function):
_excinfo = None
def setup(self):
self._testcase = self.parent.obj(self.name)
self._fix_unittest_skip_decorator()
self._obj = getattr(self._testcase, self.name)
if hasattr(self._testcase, 'setup_method'):
self._testcase.setup_method(self._obj)
if hasattr(self, "_request"):
self._request._fillfixtures()
def _fix_unittest_skip_decorator(self):
"""
The @unittest.skip decorator calls functools.wraps(self._testcase)
The call to functools.wraps() fails unless self._testcase
has a __name__ attribute. This is usually automatically supplied
if the test is a function or method, but we need to add manually
here.
See issue #1169
"""
if sys.version_info[0] == 2:
setattr(self._testcase, "__name__", self.name)
def teardown(self):
if hasattr(self._testcase, 'teardown_method'):
self._testcase.teardown_method(self._obj)
# Allow garbage collection on TestCase instance attributes.
self._testcase = None
self._obj = None
def startTest(self, testcase):
pass
def _addexcinfo(self, rawexcinfo):
# unwrap potential exception info (see twisted trial support below)
rawexcinfo = getattr(rawexcinfo, '_rawexcinfo', rawexcinfo)
try:
excinfo = _pytest._code.ExceptionInfo(rawexcinfo)
except TypeError:
try:
try:
l = traceback.format_exception(*rawexcinfo)
l.insert(0, "NOTE: Incompatible Exception Representation, "
"displaying natively:\n\n")
pytest.fail("".join(l), pytrace=False)
except (pytest.fail.Exception, KeyboardInterrupt):
raise
except:
pytest.fail("ERROR: Unknown Incompatible Exception "
"representation:\n%r" %(rawexcinfo,), pytrace=False)
except KeyboardInterrupt:
raise
except pytest.fail.Exception:
excinfo = _pytest._code.ExceptionInfo()
self.__dict__.setdefault('_excinfo', []).append(excinfo)
def addError(self, testcase, rawexcinfo):
self._addexcinfo(rawexcinfo)
def addFailure(self, testcase, rawexcinfo):
self._addexcinfo(rawexcinfo)
def addSkip(self, testcase, reason):
try:
pytest.skip(reason)
except pytest.skip.Exception:
self._evalskip = MarkEvaluator(self, 'SkipTest')
self._evalskip.result = True
self._addexcinfo(sys.exc_info())
def addExpectedFailure(self, testcase, rawexcinfo, reason=""):
try:
pytest.xfail(str(reason))
except pytest.xfail.Exception:
self._addexcinfo(sys.exc_info())
def addUnexpectedSuccess(self, testcase, reason=""):
self._unexpectedsuccess = reason
def addSuccess(self, testcase):
pass
def stopTest(self, testcase):
pass
def runtest(self):
if self.config.pluginmanager.get_plugin("pdbinvoke") is None:
self._testcase(result=self)
else:
# disables tearDown and cleanups for post mortem debugging (see #1890)
self._testcase.debug()
def _prunetraceback(self, excinfo):
pytest.Function._prunetraceback(self, excinfo)
traceback = excinfo.traceback.filter(
lambda x:not x.frame.f_globals.get('__unittest'))
if traceback:
excinfo.traceback = traceback
@pytest.hookimpl(tryfirst=True)
def pytest_runtest_makereport(item, call):
if isinstance(item, TestCaseFunction):
if item._excinfo:
call.excinfo = item._excinfo.pop(0)
try:
del call.result
except AttributeError:
pass
# twisted trial support
@pytest.hookimpl(hookwrapper=True)
def pytest_runtest_protocol(item):
if isinstance(item, TestCaseFunction) and \
'twisted.trial.unittest' in sys.modules:
ut = sys.modules['twisted.python.failure']
Failure__init__ = ut.Failure.__init__
check_testcase_implements_trial_reporter()
def excstore(self, exc_value=None, exc_type=None, exc_tb=None,
captureVars=None):
if exc_value is None:
self._rawexcinfo = sys.exc_info()
else:
if exc_type is None:
exc_type = type(exc_value)
self._rawexcinfo = (exc_type, exc_value, exc_tb)
try:
Failure__init__(self, exc_value, exc_type, exc_tb,
captureVars=captureVars)
except TypeError:
Failure__init__(self, exc_value, exc_type, exc_tb)
ut.Failure.__init__ = excstore
yield
ut.Failure.__init__ = Failure__init__
else:
yield
def check_testcase_implements_trial_reporter(done=[]):
if done:
return
from zope.interface import classImplements
from twisted.trial.itrial import IReporter
classImplements(TestCaseFunction, IReporter)
done.append(1)
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