mirror of
https://github.com/microsoft/PowerToys.git
synced 2024-12-15 03:59:15 +08:00
304 lines
9.6 KiB
Python
304 lines
9.6 KiB
Python
"""TestSuite"""
|
|
|
|
import sys
|
|
|
|
from . import case
|
|
from . import util
|
|
|
|
__unittest = True
|
|
|
|
|
|
def _call_if_exists(parent, attr):
|
|
func = getattr(parent, attr, lambda: None)
|
|
func()
|
|
|
|
|
|
class BaseTestSuite(object):
|
|
"""A simple test suite that doesn't provide class or module shared fixtures.
|
|
"""
|
|
def __init__(self, tests=()):
|
|
self._tests = []
|
|
self.addTests(tests)
|
|
|
|
def __repr__(self):
|
|
return "<%s tests=%s>" % (util.strclass(self.__class__), list(self))
|
|
|
|
def __eq__(self, other):
|
|
if not isinstance(other, self.__class__):
|
|
return NotImplemented
|
|
return list(self) == list(other)
|
|
|
|
def __ne__(self, other):
|
|
return not self == other
|
|
|
|
# Can't guarantee hash invariant, so flag as unhashable
|
|
__hash__ = None
|
|
|
|
def __iter__(self):
|
|
return iter(self._tests)
|
|
|
|
def countTestCases(self):
|
|
cases = 0
|
|
for test in self:
|
|
cases += test.countTestCases()
|
|
return cases
|
|
|
|
def addTest(self, test):
|
|
# sanity checks
|
|
if not hasattr(test, '__call__'):
|
|
raise TypeError("{} is not callable".format(repr(test)))
|
|
if isinstance(test, type) and issubclass(test,
|
|
(case.TestCase, TestSuite)):
|
|
raise TypeError("TestCases and TestSuites must be instantiated "
|
|
"before passing them to addTest()")
|
|
self._tests.append(test)
|
|
|
|
def addTests(self, tests):
|
|
if isinstance(tests, basestring):
|
|
raise TypeError("tests must be an iterable of tests, not a string")
|
|
for test in tests:
|
|
self.addTest(test)
|
|
|
|
def run(self, result):
|
|
for test in self:
|
|
if result.shouldStop:
|
|
break
|
|
test(result)
|
|
return result
|
|
|
|
def __call__(self, *args, **kwds):
|
|
return self.run(*args, **kwds)
|
|
|
|
def debug(self):
|
|
"""Run the tests without collecting errors in a TestResult"""
|
|
for test in self:
|
|
test.debug()
|
|
|
|
|
|
class TestSuite(BaseTestSuite):
|
|
"""A test suite is a composite test consisting of a number of TestCases.
|
|
|
|
For use, create an instance of TestSuite, then add test case instances.
|
|
When all tests have been added, the suite can be passed to a test
|
|
runner, such as TextTestRunner. It will run the individual test cases
|
|
in the order in which they were added, aggregating the results. When
|
|
subclassing, do not forget to call the base class constructor.
|
|
"""
|
|
|
|
def run(self, result, debug=False):
|
|
topLevel = False
|
|
if getattr(result, '_testRunEntered', False) is False:
|
|
result._testRunEntered = topLevel = True
|
|
|
|
for test in self:
|
|
if result.shouldStop:
|
|
break
|
|
|
|
if _isnotsuite(test):
|
|
self._tearDownPreviousClass(test, result)
|
|
self._handleModuleFixture(test, result)
|
|
self._handleClassSetUp(test, result)
|
|
result._previousTestClass = test.__class__
|
|
|
|
if (getattr(test.__class__, '_classSetupFailed', False) or
|
|
getattr(result, '_moduleSetUpFailed', False)):
|
|
continue
|
|
|
|
if not debug:
|
|
test(result)
|
|
else:
|
|
test.debug()
|
|
|
|
if topLevel:
|
|
self._tearDownPreviousClass(None, result)
|
|
self._handleModuleTearDown(result)
|
|
result._testRunEntered = False
|
|
return result
|
|
|
|
def debug(self):
|
|
"""Run the tests without collecting errors in a TestResult"""
|
|
debug = _DebugResult()
|
|
self.run(debug, True)
|
|
|
|
################################
|
|
|
|
def _handleClassSetUp(self, test, result):
|
|
previousClass = getattr(result, '_previousTestClass', None)
|
|
currentClass = test.__class__
|
|
if currentClass == previousClass:
|
|
return
|
|
if result._moduleSetUpFailed:
|
|
return
|
|
if getattr(currentClass, "__unittest_skip__", False):
|
|
return
|
|
|
|
try:
|
|
currentClass._classSetupFailed = False
|
|
except TypeError:
|
|
# test may actually be a function
|
|
# so its class will be a builtin-type
|
|
pass
|
|
|
|
setUpClass = getattr(currentClass, 'setUpClass', None)
|
|
if setUpClass is not None:
|
|
_call_if_exists(result, '_setupStdout')
|
|
try:
|
|
setUpClass()
|
|
except Exception as e:
|
|
if isinstance(result, _DebugResult):
|
|
raise
|
|
currentClass._classSetupFailed = True
|
|
className = util.strclass(currentClass)
|
|
errorName = 'setUpClass (%s)' % className
|
|
self._addClassOrModuleLevelException(result, e, errorName)
|
|
finally:
|
|
_call_if_exists(result, '_restoreStdout')
|
|
|
|
def _get_previous_module(self, result):
|
|
previousModule = None
|
|
previousClass = getattr(result, '_previousTestClass', None)
|
|
if previousClass is not None:
|
|
previousModule = previousClass.__module__
|
|
return previousModule
|
|
|
|
|
|
def _handleModuleFixture(self, test, result):
|
|
previousModule = self._get_previous_module(result)
|
|
currentModule = test.__class__.__module__
|
|
if currentModule == previousModule:
|
|
return
|
|
|
|
self._handleModuleTearDown(result)
|
|
|
|
result._moduleSetUpFailed = False
|
|
try:
|
|
module = sys.modules[currentModule]
|
|
except KeyError:
|
|
return
|
|
setUpModule = getattr(module, 'setUpModule', None)
|
|
if setUpModule is not None:
|
|
_call_if_exists(result, '_setupStdout')
|
|
try:
|
|
setUpModule()
|
|
except Exception, e:
|
|
if isinstance(result, _DebugResult):
|
|
raise
|
|
result._moduleSetUpFailed = True
|
|
errorName = 'setUpModule (%s)' % currentModule
|
|
self._addClassOrModuleLevelException(result, e, errorName)
|
|
finally:
|
|
_call_if_exists(result, '_restoreStdout')
|
|
|
|
def _addClassOrModuleLevelException(self, result, exception, errorName):
|
|
error = _ErrorHolder(errorName)
|
|
addSkip = getattr(result, 'addSkip', None)
|
|
if addSkip is not None and isinstance(exception, case.SkipTest):
|
|
addSkip(error, str(exception))
|
|
else:
|
|
result.addError(error, sys.exc_info())
|
|
|
|
def _handleModuleTearDown(self, result):
|
|
previousModule = self._get_previous_module(result)
|
|
if previousModule is None:
|
|
return
|
|
if result._moduleSetUpFailed:
|
|
return
|
|
|
|
try:
|
|
module = sys.modules[previousModule]
|
|
except KeyError:
|
|
return
|
|
|
|
tearDownModule = getattr(module, 'tearDownModule', None)
|
|
if tearDownModule is not None:
|
|
_call_if_exists(result, '_setupStdout')
|
|
try:
|
|
tearDownModule()
|
|
except Exception as e:
|
|
if isinstance(result, _DebugResult):
|
|
raise
|
|
errorName = 'tearDownModule (%s)' % previousModule
|
|
self._addClassOrModuleLevelException(result, e, errorName)
|
|
finally:
|
|
_call_if_exists(result, '_restoreStdout')
|
|
|
|
def _tearDownPreviousClass(self, test, result):
|
|
previousClass = getattr(result, '_previousTestClass', None)
|
|
currentClass = test.__class__
|
|
if currentClass == previousClass:
|
|
return
|
|
if getattr(previousClass, '_classSetupFailed', False):
|
|
return
|
|
if getattr(result, '_moduleSetUpFailed', False):
|
|
return
|
|
if getattr(previousClass, "__unittest_skip__", False):
|
|
return
|
|
|
|
tearDownClass = getattr(previousClass, 'tearDownClass', None)
|
|
if tearDownClass is not None:
|
|
_call_if_exists(result, '_setupStdout')
|
|
try:
|
|
tearDownClass()
|
|
except Exception, e:
|
|
if isinstance(result, _DebugResult):
|
|
raise
|
|
className = util.strclass(previousClass)
|
|
errorName = 'tearDownClass (%s)' % className
|
|
self._addClassOrModuleLevelException(result, e, errorName)
|
|
finally:
|
|
_call_if_exists(result, '_restoreStdout')
|
|
|
|
|
|
class _ErrorHolder(object):
|
|
"""
|
|
Placeholder for a TestCase inside a result. As far as a TestResult
|
|
is concerned, this looks exactly like a unit test. Used to insert
|
|
arbitrary errors into a test suite run.
|
|
"""
|
|
# Inspired by the ErrorHolder from Twisted:
|
|
# http://twistedmatrix.com/trac/browser/trunk/twisted/trial/runner.py
|
|
|
|
# attribute used by TestResult._exc_info_to_string
|
|
failureException = None
|
|
|
|
def __init__(self, description):
|
|
self.description = description
|
|
|
|
def id(self):
|
|
return self.description
|
|
|
|
def shortDescription(self):
|
|
return None
|
|
|
|
def __repr__(self):
|
|
return "<ErrorHolder description=%r>" % (self.description,)
|
|
|
|
def __str__(self):
|
|
return self.id()
|
|
|
|
def run(self, result):
|
|
# could call result.addError(...) - but this test-like object
|
|
# shouldn't be run anyway
|
|
pass
|
|
|
|
def __call__(self, result):
|
|
return self.run(result)
|
|
|
|
def countTestCases(self):
|
|
return 0
|
|
|
|
def _isnotsuite(test):
|
|
"A crude way to tell apart testcases and suites with duck-typing"
|
|
try:
|
|
iter(test)
|
|
except TypeError:
|
|
return True
|
|
return False
|
|
|
|
|
|
class _DebugResult(object):
|
|
"Used by the TestSuite to hold previous class when running in debug."
|
|
_previousTestClass = None
|
|
_moduleSetUpFailed = False
|
|
shouldStop = False
|