switch to src layout

1 files changed, 253 insertions, 0 deletions

diff --git a/src/_pytest/unittest.py b/src/_pytest/unittest.py
new file mode 100644
index 000000000..6ad9fda88
--- /dev/null
+++ b/src/_pytest/unittest.py
@@ -0,0 +1,253 @@
+""" discovery and running of std-library "unittest" style tests. """
+from __future__ import absolute_import, division, print_function
+
+import sys
+import traceback
+
+# for transferring markers
+import _pytest._code
+from _pytest.config import hookimpl
+from _pytest.outcomes import fail, skip, xfail
+from _pytest.python import transfer_markers, Class, Module, Function
+
+
+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(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(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, callobj=funcobj)
+            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(Function):
+    nofuncargs = True
+    _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:
+                    values = traceback.format_exception(*rawexcinfo)
+                    values.insert(
+                        0,
+                        "NOTE: Incompatible Exception Representation, "
+                        "displaying natively:\n\n",
+                    )
+                    fail("".join(values), pytrace=False)
+                except (fail.Exception, KeyboardInterrupt):
+                    raise
+                except:  # noqa
+                    fail(
+                        "ERROR: Unknown Incompatible Exception "
+                        "representation:\n%r" % (rawexcinfo,),
+                        pytrace=False,
+                    )
+            except KeyboardInterrupt:
+                raise
+            except 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:
+            skip(reason)
+        except skip.Exception:
+            self._skipped_by_mark = True
+            self._addexcinfo(sys.exc_info())
+
+    def addExpectedFailure(self, testcase, rawexcinfo, reason=""):
+        try:
+            xfail(str(reason))
+        except 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 _handle_skip(self):
+        # implements the skipping machinery (see #2137)
+        # analog to pythons Lib/unittest/case.py:run
+        testMethod = getattr(self._testcase, self._testcase._testMethodName)
+        if (
+            getattr(self._testcase.__class__, "__unittest_skip__", False)
+            or getattr(testMethod, "__unittest_skip__", False)
+        ):
+            # If the class or method was skipped.
+            skip_why = (
+                getattr(self._testcase.__class__, "__unittest_skip_why__", "")
+                or getattr(testMethod, "__unittest_skip_why__", "")
+            )
+            try:  # PY3, unittest2 on PY2
+                self._testcase._addSkip(self, self._testcase, skip_why)
+            except TypeError:  # PY2
+                if sys.version_info[0] != 2:
+                    raise
+                self._testcase._addSkip(self, skip_why)
+            return True
+        return False
+
+    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)
+            if self._handle_skip():
+                return
+            self._testcase.debug()
+
+    def _prunetraceback(self, excinfo):
+        Function._prunetraceback(self, excinfo)
+        traceback = excinfo.traceback.filter(
+            lambda x: not x.frame.f_globals.get("__unittest")
+        )
+        if traceback:
+            excinfo.traceback = traceback
+
+
+@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
+
+
+@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)