test_unittest.py

from __future__ import absolute_import, division, print_function
from _pytest.main import EXIT_NOTESTSCOLLECTED
import pytest
import gc


def test_simple_unittest(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest
        class MyTestCase(unittest.TestCase):
            def testpassing(self):
                self.assertEqual('foo', 'foo')
            def test_failing(self):
                self.assertEqual('foo', 'bar')
    """
    )
    reprec = testdir.inline_run(testpath)
    assert reprec.matchreport("testpassing").passed
    assert reprec.matchreport("test_failing").failed


def test_runTest_method(testdir):
    testdir.makepyfile(
        """
        import unittest
        class MyTestCaseWithRunTest(unittest.TestCase):
            def runTest(self):
                self.assertEqual('foo', 'foo')
        class MyTestCaseWithoutRunTest(unittest.TestCase):
            def runTest(self):
                self.assertEqual('foo', 'foo')
            def test_something(self):
                pass
        """
    )
    result = testdir.runpytest("-v")
    result.stdout.fnmatch_lines(
        """
        *MyTestCaseWithRunTest::runTest*
        *MyTestCaseWithoutRunTest::test_something*
        *2 passed*
    """
    )


def test_isclasscheck_issue53(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest
        class _E(object):
            def __getattr__(self, tag):
                pass
        E = _E()
    """
    )
    result = testdir.runpytest(testpath)
    assert result.ret == EXIT_NOTESTSCOLLECTED


def test_setup(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest
        class MyTestCase(unittest.TestCase):
            def setUp(self):
                self.foo = 1
            def setup_method(self, method):
                self.foo2 = 1
            def test_both(self):
                self.assertEqual(1, self.foo)
                assert self.foo2 == 1
            def teardown_method(self, method):
                assert 0, "42"

    """
    )
    reprec = testdir.inline_run("-s", testpath)
    assert reprec.matchreport("test_both", when="call").passed
    rep = reprec.matchreport("test_both", when="teardown")
    assert rep.failed and "42" in str(rep.longrepr)


def test_setUpModule(testdir):
    testpath = testdir.makepyfile(
        """
        values = []

        def setUpModule():
            values.append(1)

        def tearDownModule():
            del values[0]

        def test_hello():
            assert values == [1]

        def test_world():
            assert values == [1]
        """
    )
    result = testdir.runpytest(testpath)
    result.stdout.fnmatch_lines(["*2 passed*"])


def test_setUpModule_failing_no_teardown(testdir):
    testpath = testdir.makepyfile(
        """
        values = []

        def setUpModule():
            0/0

        def tearDownModule():
            values.append(1)

        def test_hello():
            pass
    """
    )
    reprec = testdir.inline_run(testpath)
    reprec.assertoutcome(passed=0, failed=1)
    call = reprec.getcalls("pytest_runtest_setup")[0]
    assert not call.item.module.values


def test_new_instances(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest
        class MyTestCase(unittest.TestCase):
            def test_func1(self):
                self.x = 2
            def test_func2(self):
                assert not hasattr(self, 'x')
    """
    )
    reprec = testdir.inline_run(testpath)
    reprec.assertoutcome(passed=2)


def test_teardown(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest
        class MyTestCase(unittest.TestCase):
            values = []
            def test_one(self):
                pass
            def tearDown(self):
                self.values.append(None)
        class Second(unittest.TestCase):
            def test_check(self):
                self.assertEqual(MyTestCase.values, [None])
    """
    )
    reprec = testdir.inline_run(testpath)
    passed, skipped, failed = reprec.countoutcomes()
    assert failed == 0, failed
    assert passed == 2
    assert passed + skipped + failed == 2


def test_teardown_issue1649(testdir):
    """
    Are TestCase objects cleaned up? Often unittest TestCase objects set
    attributes that are large and expensive during setUp.

    The TestCase will not be cleaned up if the test fails, because it
    would then exist in the stackframe.
    """
    testpath = testdir.makepyfile(
        """
        import unittest
        class TestCaseObjectsShouldBeCleanedUp(unittest.TestCase):
            def setUp(self):
                self.an_expensive_object = 1
            def test_demo(self):
                pass

    """
    )
    testdir.inline_run("-s", testpath)
    gc.collect()
    for obj in gc.get_objects():
        assert type(obj).__name__ != "TestCaseObjectsShouldBeCleanedUp"


def test_unittest_skip_issue148(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest

        @unittest.skip("hello")
        class MyTestCase(unittest.TestCase):
            @classmethod
            def setUpClass(self):
                xxx
            def test_one(self):
                pass
            @classmethod
            def tearDownClass(self):
                xxx
    """
    )
    reprec = testdir.inline_run(testpath)
    reprec.assertoutcome(skipped=1)


def test_method_and_teardown_failing_reporting(testdir):
    testdir.makepyfile(
        """
        import unittest, pytest
        class TC(unittest.TestCase):
            def tearDown(self):
                assert 0, "down1"
            def test_method(self):
                assert False, "down2"
    """
    )
    result = testdir.runpytest("-s")
    assert result.ret == 1
    result.stdout.fnmatch_lines(
        [
            "*tearDown*",
            "*assert 0*",
            "*test_method*",
            "*assert False*",
            "*1 failed*1 error*",
        ]
    )


def test_setup_failure_is_shown(testdir):
    testdir.makepyfile(
        """
        import unittest
        import pytest
        class TC(unittest.TestCase):
            def setUp(self):
                assert 0, "down1"
            def test_method(self):
                print ("never42")
                xyz
    """
    )
    result = testdir.runpytest("-s")
    assert result.ret == 1
    result.stdout.fnmatch_lines(["*setUp*", "*assert 0*down1*", "*1 failed*"])
    assert "never42" not in result.stdout.str()


def test_setup_setUpClass(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest
        import pytest
        class MyTestCase(unittest.TestCase):
            x = 0
            @classmethod
            def setUpClass(cls):
                cls.x += 1
            def test_func1(self):
                assert self.x == 1
            def test_func2(self):
                assert self.x == 1
            @classmethod
            def tearDownClass(cls):
                cls.x -= 1
        def test_teareddown():
            assert MyTestCase.x == 0
    """
    )
    reprec = testdir.inline_run(testpath)
    reprec.assertoutcome(passed=3)


def test_setup_class(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest
        import pytest
        class MyTestCase(unittest.TestCase):
            x = 0
            def setup_class(cls):
                cls.x += 1
            def test_func1(self):
                assert self.x == 1
            def test_func2(self):
                assert self.x == 1
            def teardown_class(cls):
                cls.x -= 1
        def test_teareddown():
            assert MyTestCase.x == 0
    """
    )
    reprec = testdir.inline_run(testpath)
    reprec.assertoutcome(passed=3)


@pytest.mark.parametrize("type", ["Error", "Failure"])
def test_testcase_adderrorandfailure_defers(testdir, type):
    testdir.makepyfile(
        """
        from unittest import TestCase
        import pytest
        class MyTestCase(TestCase):
            def run(self, result):
                excinfo = pytest.raises(ZeroDivisionError, lambda: 0/0)
                try:
                    result.add%s(self, excinfo._excinfo)
                except KeyboardInterrupt:
                    raise
                except:
                    pytest.fail("add%s should not raise")
            def test_hello(self):
                pass
    """
        % (type, type)
    )
    result = testdir.runpytest()
    assert "should not raise" not in result.stdout.str()


@pytest.mark.parametrize("type", ["Error", "Failure"])
def test_testcase_custom_exception_info(testdir, type):
    testdir.makepyfile(
        """
        from unittest import TestCase
        import py, pytest
        import _pytest._code
        class MyTestCase(TestCase):
            def run(self, result):
                excinfo = pytest.raises(ZeroDivisionError, lambda: 0/0)
                # we fake an incompatible exception info
                from _pytest.monkeypatch import MonkeyPatch
                mp = MonkeyPatch()
                def t(*args):
                    mp.undo()
                    raise TypeError()
                mp.setattr(_pytest._code, 'ExceptionInfo', t)
                try:
                    excinfo = excinfo._excinfo
                    result.add%(type)s(self, excinfo)
                finally:
                    mp.undo()
            def test_hello(self):
                pass
    """
        % locals()
    )
    result = testdir.runpytest()
    result.stdout.fnmatch_lines(
        [
            "NOTE: Incompatible Exception Representation*",
            "*ZeroDivisionError*",
            "*1 failed*",
        ]
    )


def test_testcase_totally_incompatible_exception_info(testdir):
    item, = testdir.getitems(
        """
        from unittest import TestCase
        class MyTestCase(TestCase):
            def test_hello(self):
                pass
    """
    )
    item.addError(None, 42)
    excinfo = item._excinfo.pop(0)
    assert "ERROR: Unknown Incompatible" in str(excinfo.getrepr())


def test_module_level_pytestmark(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest
        import pytest
        pytestmark = pytest.mark.xfail
        class MyTestCase(unittest.TestCase):
            def test_func1(self):
                assert 0
    """
    )
    reprec = testdir.inline_run(testpath, "-s")
    reprec.assertoutcome(skipped=1)


class TestTrialUnittest(object):

    def setup_class(cls):
        cls.ut = pytest.importorskip("twisted.trial.unittest")
        # on windows trial uses a socket for a reactor and apparently doesn't close it properly
        # https://twistedmatrix.com/trac/ticket/9227
        cls.ignore_unclosed_socket_warning = ("-W", "always")

    def test_trial_testcase_runtest_not_collected(self, testdir):
        testdir.makepyfile(
            """
            from twisted.trial.unittest import TestCase

            class TC(TestCase):
                def test_hello(self):
                    pass
        """
        )
        reprec = testdir.inline_run(*self.ignore_unclosed_socket_warning)
        reprec.assertoutcome(passed=1)
        testdir.makepyfile(
            """
            from twisted.trial.unittest import TestCase

            class TC(TestCase):
                def runTest(self):
                    pass
        """
        )
        reprec = testdir.inline_run(*self.ignore_unclosed_socket_warning)
        reprec.assertoutcome(passed=1)

    def test_trial_exceptions_with_skips(self, testdir):
        testdir.makepyfile(
            """
            from twisted.trial import unittest
            import pytest
            class TC(unittest.TestCase):
                def test_hello(self):
                    pytest.skip("skip_in_method")
                @pytest.mark.skipif("sys.version_info != 1")
                def test_hello2(self):
                    pass
                @pytest.mark.xfail(reason="iwanto")
                def test_hello3(self):
                    assert 0
                def test_hello4(self):
                    pytest.xfail("i2wanto")
                def test_trial_skip(self):
                    pass
                test_trial_skip.skip = "trialselfskip"

                def test_trial_todo(self):
                    assert 0
                test_trial_todo.todo = "mytodo"

                def test_trial_todo_success(self):
                    pass
                test_trial_todo_success.todo = "mytodo"

            class TC2(unittest.TestCase):
                def setup_class(cls):
                    pytest.skip("skip_in_setup_class")
                def test_method(self):
                    pass
        """
        )
        from _pytest.compat import _is_unittest_unexpected_success_a_failure

        should_fail = _is_unittest_unexpected_success_a_failure()
        result = testdir.runpytest("-rxs", *self.ignore_unclosed_socket_warning)
        result.stdout.fnmatch_lines_random(
            [
                "*XFAIL*test_trial_todo*",
                "*trialselfskip*",
                "*skip_in_setup_class*",
                "*iwanto*",
                "*i2wanto*",
                "*sys.version_info*",
                "*skip_in_method*",
                "*1 failed*4 skipped*3 xfailed*"
                if should_fail
                else "*4 skipped*3 xfail*1 xpass*",
            ]
        )
        assert result.ret == (1 if should_fail else 0)

    def test_trial_error(self, testdir):
        testdir.makepyfile(
            """
            from twisted.trial.unittest import TestCase
            from twisted.internet.defer import Deferred
            from twisted.internet import reactor

            class TC(TestCase):
                def test_one(self):
                    crash

                def test_two(self):
                    def f(_):
                        crash

                    d = Deferred()
                    d.addCallback(f)
                    reactor.callLater(0.3, d.callback, None)
                    return d

                def test_three(self):
                    def f():
                        pass # will never get called
                    reactor.callLater(0.3, f)
                # will crash at teardown

                def test_four(self):
                    def f(_):
                        reactor.callLater(0.3, f)
                        crash

                    d = Deferred()
                    d.addCallback(f)
                    reactor.callLater(0.3, d.callback, None)
                    return d
                # will crash both at test time and at teardown
        """
        )
        result = testdir.runpytest()
        result.stdout.fnmatch_lines(
            [
                "*ERRORS*",
                "*DelayedCalls*",
                "*test_four*",
                "*NameError*crash*",
                "*test_one*",
                "*NameError*crash*",
                "*test_three*",
                "*DelayedCalls*",
                "*test_two*",
                "*crash*",
            ]
        )

    def test_trial_pdb(self, testdir):
        p = testdir.makepyfile(
            """
            from twisted.trial import unittest
            import pytest
            class TC(unittest.TestCase):
                def test_hello(self):
                    assert 0, "hellopdb"
        """
        )
        child = testdir.spawn_pytest(p)
        child.expect("hellopdb")
        child.sendeof()

    def test_trial_testcase_skip_property(self, testdir):
        testpath = testdir.makepyfile(
            """
            from twisted.trial import unittest
            class MyTestCase(unittest.TestCase):
                skip = 'dont run'
                def test_func(self):
                    pass
            """
        )
        reprec = testdir.inline_run(testpath, "-s")
        reprec.assertoutcome(skipped=1)

    def test_trial_testfunction_skip_property(self, testdir):
        testpath = testdir.makepyfile(
            """
            from twisted.trial import unittest
            class MyTestCase(unittest.TestCase):
                def test_func(self):
                    pass
                test_func.skip = 'dont run'
            """
        )
        reprec = testdir.inline_run(testpath, "-s")
        reprec.assertoutcome(skipped=1)

    def test_trial_testcase_todo_property(self, testdir):
        testpath = testdir.makepyfile(
            """
            from twisted.trial import unittest
            class MyTestCase(unittest.TestCase):
                todo = 'dont run'
                def test_func(self):
                    assert 0
            """
        )
        reprec = testdir.inline_run(testpath, "-s")
        reprec.assertoutcome(skipped=1)

    def test_trial_testfunction_todo_property(self, testdir):
        testpath = testdir.makepyfile(
            """
            from twisted.trial import unittest
            class MyTestCase(unittest.TestCase):
                def test_func(self):
                    assert 0
                test_func.todo = 'dont run'
            """
        )
        reprec = testdir.inline_run(
            testpath, "-s", *self.ignore_unclosed_socket_warning
        )
        reprec.assertoutcome(skipped=1)


def test_djangolike_testcase(testdir):
    # contributed from Morten Breekevold
    testdir.makepyfile(
        """
        from unittest import TestCase, main

        class DjangoLikeTestCase(TestCase):

            def setUp(self):
                print ("setUp()")

            def test_presetup_has_been_run(self):
                print ("test_thing()")
                self.assertTrue(hasattr(self, 'was_presetup'))

            def tearDown(self):
                print ("tearDown()")

            def __call__(self, result=None):
                try:
                    self._pre_setup()
                except (KeyboardInterrupt, SystemExit):
                    raise
                except Exception:
                    import sys
                    result.addError(self, sys.exc_info())
                    return
                super(DjangoLikeTestCase, self).__call__(result)
                try:
                    self._post_teardown()
                except (KeyboardInterrupt, SystemExit):
                    raise
                except Exception:
                    import sys
                    result.addError(self, sys.exc_info())
                    return

            def _pre_setup(self):
                print ("_pre_setup()")
                self.was_presetup = True

            def _post_teardown(self):
                print ("_post_teardown()")
    """
    )
    result = testdir.runpytest("-s")
    assert result.ret == 0
    result.stdout.fnmatch_lines(
        [
            "*_pre_setup()*",
            "*setUp()*",
            "*test_thing()*",
            "*tearDown()*",
            "*_post_teardown()*",
        ]
    )


def test_unittest_not_shown_in_traceback(testdir):
    testdir.makepyfile(
        """
        import unittest
        class t(unittest.TestCase):
            def test_hello(self):
                x = 3
                self.assertEqual(x, 4)
    """
    )
    res = testdir.runpytest()
    assert "failUnlessEqual" not in res.stdout.str()


def test_unorderable_types(testdir):
    testdir.makepyfile(
        """
        import unittest
        class TestJoinEmpty(unittest.TestCase):
            pass

        def make_test():
            class Test(unittest.TestCase):
                pass
            Test.__name__ = "TestFoo"
            return Test
        TestFoo = make_test()
    """
    )
    result = testdir.runpytest()
    assert "TypeError" not in result.stdout.str()
    assert result.ret == EXIT_NOTESTSCOLLECTED


def test_unittest_typerror_traceback(testdir):
    testdir.makepyfile(
        """
        import unittest
        class TestJoinEmpty(unittest.TestCase):
            def test_hello(self, arg1):
                pass
    """
    )
    result = testdir.runpytest()
    assert "TypeError" in result.stdout.str()
    assert result.ret == 1


@pytest.mark.parametrize("runner", ["pytest", "unittest"])
def test_unittest_expected_failure_for_failing_test_is_xfail(testdir, runner):
    script = testdir.makepyfile(
        """
        import unittest
        class MyTestCase(unittest.TestCase):
            @unittest.expectedFailure
            def test_failing_test_is_xfail(self):
                assert False
        if __name__ == '__main__':
            unittest.main()
    """
    )
    if runner == "pytest":
        result = testdir.runpytest("-rxX")
        result.stdout.fnmatch_lines(
            ["*XFAIL*MyTestCase*test_failing_test_is_xfail*", "*1 xfailed*"]
        )
    else:
        result = testdir.runpython(script)
        result.stderr.fnmatch_lines(["*1 test in*", "*OK*(expected failures=1)*"])
    assert result.ret == 0


@pytest.mark.parametrize("runner", ["pytest", "unittest"])
def test_unittest_expected_failure_for_passing_test_is_fail(testdir, runner):
    script = testdir.makepyfile(
        """
        import unittest
        class MyTestCase(unittest.TestCase):
            @unittest.expectedFailure
            def test_passing_test_is_fail(self):
                assert True
        if __name__ == '__main__':
            unittest.main()
    """
    )
    from _pytest.compat import _is_unittest_unexpected_success_a_failure

    should_fail = _is_unittest_unexpected_success_a_failure()
    if runner == "pytest":
        result = testdir.runpytest("-rxX")
        result.stdout.fnmatch_lines(
            [
                "*MyTestCase*test_passing_test_is_fail*",
                "*1 failed*" if should_fail else "*1 xpassed*",
            ]
        )
    else:
        result = testdir.runpython(script)
        result.stderr.fnmatch_lines(["*1 test in*", "*(unexpected successes=1)*"])

    assert result.ret == (1 if should_fail else 0)


@pytest.mark.parametrize(
    "fix_type, stmt", [("fixture", "return"), ("yield_fixture", "yield")]
)
def test_unittest_setup_interaction(testdir, fix_type, stmt):
    testdir.makepyfile(
        """
        import unittest
        import pytest
        class MyTestCase(unittest.TestCase):
            @pytest.{fix_type}(scope="class", autouse=True)
            def perclass(self, request):
                request.cls.hello = "world"
                {stmt}
            @pytest.{fix_type}(scope="function", autouse=True)
            def perfunction(self, request):
                request.instance.funcname = request.function.__name__
                {stmt}

            def test_method1(self):
                assert self.funcname == "test_method1"
                assert self.hello == "world"

            def test_method2(self):
                assert self.funcname == "test_method2"

            def test_classattr(self):
                assert self.__class__.hello == "world"
    """.format(
            fix_type=fix_type, stmt=stmt
        )
    )
    result = testdir.runpytest()
    result.stdout.fnmatch_lines("*3 passed*")


def test_non_unittest_no_setupclass_support(testdir):
    testpath = testdir.makepyfile(
        """
        class TestFoo(object):
            x = 0

            @classmethod
            def setUpClass(cls):
                cls.x = 1

            def test_method1(self):
                assert self.x == 0

            @classmethod
            def tearDownClass(cls):
                cls.x = 1

        def test_not_teareddown():
            assert TestFoo.x == 0

    """
    )
    reprec = testdir.inline_run(testpath)
    reprec.assertoutcome(passed=2)


def test_no_teardown_if_setupclass_failed(testdir):
    testpath = testdir.makepyfile(
        """
        import unittest

        class MyTestCase(unittest.TestCase):
            x = 0

            @classmethod
            def setUpClass(cls):
                cls.x = 1
                assert False

            def test_func1(self):
                cls.x = 10

            @classmethod
            def tearDownClass(cls):
                cls.x = 100

        def test_notTornDown():
            assert MyTestCase.x == 1
    """
    )
    reprec = testdir.inline_run(testpath)
    reprec.assertoutcome(passed=1, failed=1)


def test_issue333_result_clearing(testdir):
    testdir.makeconftest(
        """
        import pytest
        @pytest.hookimpl(hookwrapper=True)
        def pytest_runtest_call(item):
            yield
            assert 0
    """
    )
    testdir.makepyfile(
        """
        import unittest
        class TestIt(unittest.TestCase):
            def test_func(self):
                0/0
    """
    )

    reprec = testdir.inline_run()
    reprec.assertoutcome(failed=1)


def test_unittest_raise_skip_issue748(testdir):
    testdir.makepyfile(
        test_foo="""
        import unittest

        class MyTestCase(unittest.TestCase):
            def test_one(self):
                raise unittest.SkipTest('skipping due to reasons')
    """
    )
    result = testdir.runpytest("-v", "-rs")
    result.stdout.fnmatch_lines(
        """
        *SKIP*[1]*test_foo.py*skipping due to reasons*
        *1 skipped*
    """
    )


def test_unittest_skip_issue1169(testdir):
    testdir.makepyfile(
        test_foo="""
        import unittest

        class MyTestCase(unittest.TestCase):
            @unittest.skip("skipping due to reasons")
            def test_skip(self):
                 self.fail()
        """
    )
    result = testdir.runpytest("-v", "-rs")
    result.stdout.fnmatch_lines(
        """
        *SKIP*[1]*skipping due to reasons*
        *1 skipped*
    """
    )


def test_class_method_containing_test_issue1558(testdir):
    testdir.makepyfile(
        test_foo="""
        import unittest

        class MyTestCase(unittest.TestCase):
            def test_should_run(self):
                pass
            def test_should_not_run(self):
                pass
            test_should_not_run.__test__ = False
    """
    )
    reprec = testdir.inline_run()
    reprec.assertoutcome(passed=1)


@pytest.mark.issue(3498)
@pytest.mark.parametrize(
    "base", ["six.moves.builtins.object", "unittest.TestCase", "unittest2.TestCase"]
)
def test_usefixtures_marker_on_unittest(base, testdir):
    module = base.rsplit(".", 1)[0]
    pytest.importorskip(module)
    testdir.makepyfile(
        conftest="""
        import pytest

        @pytest.fixture(scope='function')
        def fixture1(request, monkeypatch):
            monkeypatch.setattr(request.instance, 'fixture1', True )


        @pytest.fixture(scope='function')
        def fixture2(request, monkeypatch):
            monkeypatch.setattr(request.instance, 'fixture2', True )

        def node_and_marks(item):
            print(item.nodeid)
            for mark in item.iter_markers():
                print("  ", mark)

        @pytest.fixture(autouse=True)
        def my_marks(request):
            node_and_marks(request.node)

        def pytest_collection_modifyitems(items):
            for item in items:
               node_and_marks(item)

        """
    )

    testdir.makepyfile(
        """
        import pytest
        import {module}

        class Tests({base}):
            fixture1 = False
            fixture2 = False

            @pytest.mark.usefixtures("fixture1")
            def test_one(self):
                assert self.fixture1
                assert not self.fixture2

            @pytest.mark.usefixtures("fixture1", "fixture2")
            def test_two(self):
                assert self.fixture1
                assert self.fixture2


    """.format(
            module=module, base=base
        )
    )

    result = testdir.runpytest("-s")
    result.assert_outcomes(passed=2)