path: root/test/test_testlib.py

# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of logilab-common.
#
# logilab-common is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option) any
# later version.
#
# logilab-common is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with logilab-common.  If not, see <http://www.gnu.org/licenses/>.
"""unittest module for logilab.comon.testlib"""

from __future__ import print_function

import os
import sys
from os.path import join, dirname, isdir, isfile, abspath, exists
import tempfile
import shutil

try:
    __file__
except NameError:
    __file__ = sys.argv[0]

from logilab.common.compat import StringIO
from logilab.common.testlib import (
    TestSuite,
    unittest_main,
    Tags,
    TestCase,
    mock_object,
    create_files,
    InnerTest,
    with_tempdir,
    tag,
    require_version,
    require_module,
)
from logilab.common.pytest import SkipAwareTextTestRunner, NonStrictTestLoader


class MockTestCase(TestCase):
    def __init__(self):
        # Do not call unittest.TestCase's __init__
        pass

    def fail(self, msg):
        raise AssertionError(msg)


class UtilTC(TestCase):
    def test_mockobject(self):
        obj = mock_object(foo="bar", baz="bam")
        self.assertEqual(obj.foo, "bar")
        self.assertEqual(obj.baz, "bam")

    def test_create_files(self):
        chroot = tempfile.mkdtemp()
        path_to = lambda path: join(chroot, path)
        dircontent = lambda path: sorted(os.listdir(join(chroot, path)))
        try:
            self.assertFalse(isdir(path_to("a/")))
            create_files(["a/b/foo.py", "a/b/c/", "a/b/c/d/e.py"], chroot)
            # make sure directories exist
            self.assertTrue(isdir(path_to("a")))
            self.assertTrue(isdir(path_to("a/b")))
            self.assertTrue(isdir(path_to("a/b/c")))
            self.assertTrue(isdir(path_to("a/b/c/d")))
            # make sure files exist
            self.assertTrue(isfile(path_to("a/b/foo.py")))
            self.assertTrue(isfile(path_to("a/b/c/d/e.py")))
            # make sure only asked files were created
            self.assertEqual(dircontent("a"), ["b"])
            self.assertEqual(dircontent("a/b"), ["c", "foo.py"])
            self.assertEqual(dircontent("a/b/c"), ["d"])
            self.assertEqual(dircontent("a/b/c/d"), ["e.py"])
        finally:
            shutil.rmtree(chroot)


class TestlibTC(TestCase):
    def mkdir(self, path):
        if not exists(path):
            self._dirs.add(path)
            os.mkdir(path)

    def setUp(self):
        self.tc = MockTestCase()
        self._dirs = set()

    def tearDown(self):
        while self._dirs:
            shutil.rmtree(self._dirs.pop(), ignore_errors=True)

    def test_dict_equals(self):
        """tests TestCase.assertDictEqual"""
        d1 = {"a": 1, "b": 2}
        d2 = {"a": 1, "b": 3}
        d3 = dict(d1)
        self.assertRaises(AssertionError, self.tc.assertDictEqual, d1, d2)
        self.tc.assertDictEqual(d1, d3)
        self.tc.assertDictEqual(d3, d1)
        self.tc.assertDictEqual(d1, d1)

    def test_list_equals(self):
        """tests TestCase.assertListEqual"""
        l1 = list(range(10))
        l2 = list(range(5))
        l3 = list(range(10))
        self.assertRaises(AssertionError, self.tc.assertListEqual, l1, l2)
        self.tc.assertListEqual(l1, l1)
        self.tc.assertListEqual(l1, l3)
        self.tc.assertListEqual(l3, l1)

    def test_equality_for_sets(self):
        s1 = set("ab")
        s2 = set("a")
        self.assertRaises(AssertionError, self.tc.assertSetEqual, s1, s2)
        self.tc.assertSetEqual(s1, s1)
        self.tc.assertSetEqual(set(), set())

    def test_text_equality(self):
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, "toto", 12)
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, "toto", 12)
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, "toto", None)
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, "toto", None)
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, 3.12, "toto")
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, 3.12, "toto")
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, None, "toto")
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, None, "toto")
        self.tc.assertMultiLineEqual("toto\ntiti", "toto\ntiti")
        self.tc.assertMultiLineEqual("toto\ntiti", "toto\ntiti")
        self.assertRaises(
            AssertionError, self.tc.assertMultiLineEqual, "toto\ntiti", "toto\n titi\n"
        )
        self.assertRaises(
            AssertionError, self.tc.assertMultiLineEqual, "toto\ntiti", "toto\n titi\n"
        )
        foo = join(dirname(__file__), "data", "foo.txt")
        spam = join(dirname(__file__), "data", "spam.txt")
        with open(foo) as fobj:
            text1 = fobj.read()
        self.tc.assertMultiLineEqual(text1, text1)
        self.tc.assertMultiLineEqual(text1, text1)
        with open(spam) as fobj:
            text2 = fobj.read()
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, text1, text2)
        self.assertRaises(AssertionError, self.tc.assertMultiLineEqual, text1, text2)

    def test_default_datadir(self):
        expected_datadir = join(dirname(abspath(__file__)), "data")
        self.assertEqual(self.datadir, expected_datadir)
        self.assertEqual(self.datapath("foo"), join(expected_datadir, "foo"))

    def test_multiple_args_datadir(self):
        expected_datadir = join(dirname(abspath(__file__)), "data")
        self.assertEqual(self.datadir, expected_datadir)
        self.assertEqual(self.datapath("foo", "bar"), join(expected_datadir, "foo", "bar"))

    def test_custom_datadir(self):
        class MyTC(TestCase):
            datadir = "foo"

            def test_1(self):
                pass

        # class' custom datadir
        tc = MyTC("test_1")
        self.assertEqual(tc.datapath("bar"), join("foo", "bar"))

    def test_cached_datadir(self):
        """test datadir is cached on the class"""

        class MyTC(TestCase):
            def test_1(self):
                pass

        expected_datadir = join(dirname(abspath(__file__)), "data")
        tc = MyTC("test_1")
        self.assertEqual(tc.datadir, expected_datadir)
        # changing module should not change the datadir
        MyTC.__module__ = "os"
        self.assertEqual(tc.datadir, expected_datadir)
        # even on new instances
        tc2 = MyTC("test_1")
        self.assertEqual(tc2.datadir, expected_datadir)

    def test_is(self):
        obj_1 = []
        obj_2 = []
        self.assertIs(obj_1, obj_1)
        self.assertRaises(AssertionError, self.assertIs, obj_1, obj_2)

    def test_isnot(self):
        obj_1 = []
        obj_2 = []
        self.assertIsNot(obj_1, obj_2)
        self.assertRaises(AssertionError, self.assertIsNot, obj_1, obj_1)

    def test_none(self):
        self.assertIsNone(None)
        self.assertRaises(AssertionError, self.assertIsNone, object())

    def test_not_none(self):
        self.assertIsNotNone(object())
        self.assertRaises(AssertionError, self.assertIsNotNone, None)

    def test_in(self):
        self.assertIn("a", "dsqgaqg")
        obj, seq = "a", ("toto", "azf", "coin")
        self.assertRaises(AssertionError, self.assertIn, obj, seq)

    def test_not_in(self):
        self.assertNotIn("a", ("toto", "azf", "coin"))
        self.assertRaises(AssertionError, self.assertNotIn, "a", "dsqgaqg")


class GenerativeTestsTC(TestCase):
    def setUp(self):
        output = StringIO()
        self.runner = SkipAwareTextTestRunner(stream=output)

    def test_generative_ok(self):
        class FooTC(TestCase):
            def test_generative(self):
                for i in range(10):
                    yield self.assertEqual, i, i

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 10)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 0)

    def test_generative_half_bad(self):
        class FooTC(TestCase):
            def test_generative(self):
                for i in range(10):
                    yield self.assertEqual, i % 2, 0

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 10)
        self.assertEqual(len(result.failures), 5)
        self.assertEqual(len(result.errors), 0)

    def test_generative_error(self):
        class FooTC(TestCase):
            def test_generative(self):
                for i in range(10):
                    if i == 5:
                        raise ValueError("STOP !")
                    yield self.assertEqual, i, i

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 5)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 1)

    def test_generative_error2(self):
        class FooTC(TestCase):
            def test_generative(self):
                for i in range(10):
                    if i == 5:
                        yield self.ouch
                    yield self.assertEqual, i, i

            def ouch(self):
                raise ValueError("stop !")

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 11)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 1)

    def test_generative_setup(self):
        class FooTC(TestCase):
            def setUp(self):
                raise ValueError("STOP !")

            def test_generative(self):
                for i in range(10):
                    yield self.assertEqual, i, i

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 1)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 1)

    def test_generative_inner_skip(self):
        class FooTC(TestCase):
            def check(self, val):
                if val == 5:
                    self.innerSkip("no 5")
                else:
                    self.assertEqual(val, val)

            def test_generative(self):
                for i in range(10):
                    yield InnerTest("check_%s" % i, self.check, i)

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 10)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 0)
        self.assertEqual(len(result.skipped), 1)

    def test_generative_skip(self):
        class FooTC(TestCase):
            def check(self, val):
                if val == 5:
                    self.skipTest("no 5")
                else:
                    self.assertEqual(val, val)

            def test_generative(self):
                for i in range(10):
                    yield InnerTest("check_%s" % i, self.check, i)

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 10)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 0)
        self.assertEqual(len(result.skipped), 1)

    def test_generative_inner_error(self):
        class FooTC(TestCase):
            def check(self, val):
                if val == 5:
                    raise ValueError("no 5")
                else:
                    self.assertEqual(val, val)

            def test_generative(self):
                for i in range(10):
                    yield InnerTest("check_%s" % i, self.check, i)

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 10)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 1)
        self.assertEqual(len(result.skipped), 0)

    def test_generative_inner_failure(self):
        class FooTC(TestCase):
            def check(self, val):
                if val == 5:
                    self.assertEqual(val, val + 1)
                else:
                    self.assertEqual(val, val)

            def test_generative(self):
                for i in range(10):
                    yield InnerTest("check_%s" % i, self.check, i)

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 10)
        self.assertEqual(len(result.failures), 1)
        self.assertEqual(len(result.errors), 0)
        self.assertEqual(len(result.skipped), 0)

    def test_generative_outer_failure(self):
        class FooTC(TestCase):
            def test_generative(self):
                self.fail()
                yield

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 0)
        self.assertEqual(len(result.failures), 1)
        self.assertEqual(len(result.errors), 0)
        self.assertEqual(len(result.skipped), 0)

    def test_generative_outer_skip(self):
        class FooTC(TestCase):
            def test_generative(self):
                self.skipTest("blah")
                yield

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 0)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 0)
        self.assertEqual(len(result.skipped), 1)


class ExitFirstTC(TestCase):
    def setUp(self):
        output = StringIO()
        self.runner = SkipAwareTextTestRunner(stream=output, exitfirst=True)

    def test_failure_exit_first(self):
        class FooTC(TestCase):
            def test_1(self):
                pass

            def test_2(self):
                assert False

            def test_3(self):
                pass

        tests = [FooTC("test_1"), FooTC("test_2")]
        result = self.runner.run(TestSuite(tests))
        self.assertEqual(result.testsRun, 2)
        self.assertEqual(len(result.failures), 1)
        self.assertEqual(len(result.errors), 0)

    def test_error_exit_first(self):
        class FooTC(TestCase):
            def test_1(self):
                pass

            def test_2(self):
                raise ValueError()

            def test_3(self):
                pass

        tests = [FooTC("test_1"), FooTC("test_2"), FooTC("test_3")]
        result = self.runner.run(TestSuite(tests))
        self.assertEqual(result.testsRun, 2)
        self.assertEqual(len(result.failures), 0)
        self.assertEqual(len(result.errors), 1)

    def test_generative_exit_first(self):
        class FooTC(TestCase):
            def test_generative(self):
                for i in range(10):
                    yield self.assertTrue, False

        result = self.runner.run(FooTC("test_generative"))
        self.assertEqual(result.testsRun, 1)
        self.assertEqual(len(result.failures), 1)
        self.assertEqual(len(result.errors), 0)


class TestLoaderTC(TestCase):
    # internal classes for test purposes ########
    class FooTC(TestCase):
        def test_foo1(self):
            pass

        def test_foo2(self):
            pass

        def test_bar1(self):
            pass

    class BarTC(TestCase):
        def test_bar2(self):
            pass

    ##############################################

    def setUp(self):
        self.loader = NonStrictTestLoader()
        self.module = (
            TestLoaderTC  # mock_object(FooTC=TestLoaderTC.FooTC, BarTC=TestLoaderTC.BarTC)
        )
        self.output = StringIO()
        self.runner = SkipAwareTextTestRunner(stream=self.output)

    def assertRunCount(self, pattern, module, expected_count, skipped=()):
        self.loader.test_pattern = pattern
        self.loader.skipped_patterns = skipped
        if pattern:
            suite = self.loader.loadTestsFromNames([pattern], module)
        else:
            suite = self.loader.loadTestsFromModule(module)
        result = self.runner.run(suite)
        self.loader.test_pattern = None
        self.loader.skipped_patterns = ()
        self.assertEqual(result.testsRun, expected_count)

    def test_collect_everything(self):
        """make sure we don't change the default behaviour
        for loadTestsFromModule() and loadTestsFromTestCase
        """
        testsuite = self.loader.loadTestsFromModule(self.module)
        self.assertEqual(len(testsuite._tests), 2)
        suite1, suite2 = testsuite._tests
        self.assertEqual(len(suite1._tests) + len(suite2._tests), 4)

    def test_collect_with_classname(self):
        self.assertRunCount("FooTC", self.module, 3)
        self.assertRunCount("BarTC", self.module, 1)

    def test_collect_with_classname_and_pattern(self):
        data = [
            ("FooTC.test_foo1", 1),
            ("FooTC.test_foo", 2),
            ("FooTC.test_fo", 2),
            ("FooTC.foo1", 1),
            ("FooTC.foo", 2),
            ("FooTC.whatever", 0),
        ]
        for pattern, expected_count in data:
            yield self.assertRunCount, pattern, self.module, expected_count

    def test_collect_with_pattern(self):
        data = [
            ("test_foo1", 1),
            ("test_foo", 2),
            ("test_bar", 2),
            ("foo1", 1),
            ("foo", 2),
            ("bar", 2),
            ("ba", 2),
            ("test", 4),
            ("ab", 0),
        ]
        for pattern, expected_count in data:
            yield self.assertRunCount, pattern, self.module, expected_count

    def test_testcase_with_custom_metaclass(self):
        class mymetaclass(type):
            pass

        class MyMod:
            class MyTestCase(TestCase):
                __metaclass__ = mymetaclass

                def test_foo1(self):
                    pass

                def test_foo2(self):
                    pass

                def test_bar(self):
                    pass

        data = [
            ("test_foo1", 1),
            ("test_foo", 2),
            ("test_bar", 1),
            ("foo1", 1),
            ("foo", 2),
            ("bar", 1),
            ("ba", 1),
            ("test", 3),
            ("ab", 0),
            ("MyTestCase.test_foo1", 1),
            ("MyTestCase.test_foo", 2),
            ("MyTestCase.test_fo", 2),
            ("MyTestCase.foo1", 1),
            ("MyTestCase.foo", 2),
            ("MyTestCase.whatever", 0),
        ]
        for pattern, expected_count in data:
            yield self.assertRunCount, pattern, MyMod, expected_count

    def test_collect_everything_and_skipped_patterns(self):
        testdata = [
            (["foo1"], 3),
            (["foo"], 2),
            (["foo", "bar"], 0),
        ]
        for skipped, expected_count in testdata:
            yield self.assertRunCount, None, self.module, expected_count, skipped

    def test_collect_specific_pattern_and_skip_some(self):
        testdata = [
            ("bar", ["foo1"], 2),
            ("bar", [], 2),
            ("bar", ["bar"], 0),
        ]
        for runpattern, skipped, expected_count in testdata:
            yield self.assertRunCount, runpattern, self.module, expected_count, skipped

    def test_skip_classname(self):
        testdata = [
            (["BarTC"], 3),
            (["FooTC"], 1),
        ]
        for skipped, expected_count in testdata:
            yield self.assertRunCount, None, self.module, expected_count, skipped

    def test_skip_classname_and_specific_collect(self):
        testdata = [
            ("bar", ["BarTC"], 1),
            ("foo", ["FooTC"], 0),
        ]
        for runpattern, skipped, expected_count in testdata:
            yield self.assertRunCount, runpattern, self.module, expected_count, skipped

    def test_nonregr_dotted_path(self):
        self.assertRunCount("FooTC.test_foo", self.module, 2)

    def test_inner_tests_selection(self):
        class MyMod:
            class MyTestCase(TestCase):
                def test_foo(self):
                    pass

                def test_foobar(self):
                    for i in range(5):
                        if i % 2 == 0:
                            yield InnerTest("even", lambda: None)
                        else:
                            yield InnerTest("odd", lambda: None)
                    yield lambda: None

        # FIXME InnerTest masked by pattern usage
        # data = [('foo', 7), ('test_foobar', 6), ('even', 3), ('odd', 2), ]
        data = [
            ("foo", 7),
            ("test_foobar", 6),
            ("even", 0),
            ("odd", 0),
        ]
        for pattern, expected_count in data:
            yield self.assertRunCount, pattern, MyMod, expected_count

    def test_nonregr_class_skipped_option(self):
        class MyMod:
            class MyTestCase(TestCase):
                def test_foo(self):
                    pass

                def test_bar(self):
                    pass

            class FooTC(TestCase):
                def test_foo(self):
                    pass

        self.assertRunCount("foo", MyMod, 2)
        self.assertRunCount(None, MyMod, 3)
        self.assertRunCount("foo", MyMod, 1, ["FooTC"])
        self.assertRunCount(None, MyMod, 2, ["FooTC"])

    def test__classes_are_ignored(self):
        class MyMod:
            class _Base(TestCase):
                def test_1(self):
                    pass

            class MyTestCase(_Base):
                def test_2(self):
                    pass

        self.assertRunCount(None, MyMod, 2)


class DecoratorTC(TestCase):
    @with_tempdir
    def test_tmp_dir_normal_1(self):
        tempdir = tempfile.gettempdir()
        # assert temp directory is empty
        self.assertListEqual(list(os.walk(tempdir)), [(tempdir, [], [])])

        witness = []

        @with_tempdir
        def createfile(list):
            fd1, fn1 = tempfile.mkstemp()
            fd2, fn2 = tempfile.mkstemp()
            dir = tempfile.mkdtemp()
            fd3, fn3 = tempfile.mkstemp(dir=dir)
            tempfile.mkdtemp()
            list.append(True)
            for fd in (fd1, fd2, fd3):
                os.close(fd)

        self.assertFalse(witness)
        createfile(witness)
        self.assertTrue(witness)

        self.assertEqual(tempfile.gettempdir(), tempdir)

        # assert temp directory is empty
        self.assertListEqual(list(os.walk(tempdir)), [(tempdir, [], [])])

    @with_tempdir
    def test_tmp_dir_normal_2(self):
        tempdir = tempfile.gettempdir()
        # assert temp directory is empty
        self.assertListEqual(list(os.walk(tempfile.tempdir)), [(tempfile.tempdir, [], [])])

        class WitnessException(Exception):
            pass

        @with_tempdir
        def createfile():
            fd1, fn1 = tempfile.mkstemp()
            fd2, fn2 = tempfile.mkstemp()
            dir = tempfile.mkdtemp()
            fd3, fn3 = tempfile.mkstemp(dir=dir)
            tempfile.mkdtemp()
            for fd in (fd1, fd2, fd3):
                os.close(fd)
            raise WitnessException()

        self.assertRaises(WitnessException, createfile)

        # assert tempdir didn't change
        self.assertEqual(tempfile.gettempdir(), tempdir)

        # assert temp directory is empty
        self.assertListEqual(list(os.walk(tempdir)), [(tempdir, [], [])])

    def test_tmpdir_generator(self):
        orig_tempdir = tempfile.gettempdir()

        @with_tempdir
        def gen():
            yield tempfile.gettempdir()

        for tempdir in gen():
            self.assertNotEqual(orig_tempdir, tempdir)
        self.assertEqual(orig_tempdir, tempfile.gettempdir())

    def setUp(self):
        self.pyversion = sys.version_info

    def tearDown(self):
        sys.version_info = self.pyversion

    def test_require_version_good(self):
        """ should return the same function
        """

        def func():
            pass

        sys.version_info = (2, 5, 5, "final", 4)
        current = sys.version_info[:3]
        compare = ("2.4", "2.5", "2.5.4", "2.5.5")
        for version in compare:
            decorator = require_version(version)
            self.assertEqual(
                func,
                decorator(func),
                "%s =< %s : function \
                return by the decorator should be the same."
                % (version, ".".join([str(element) for element in current])),
            )

    def test_require_version_bad(self):
        """ should return a different function : skipping test
        """

        def func():
            pass

        sys.version_info = (2, 5, 5, "final", 4)
        current = sys.version_info[:3]
        compare = ("2.5.6", "2.6", "2.6.5")
        for version in compare:
            decorator = require_version(version)
            self.assertNotEqual(
                func,
                decorator(func),
                "%s >= %s : function \
                 return by the decorator should NOT be the same."
                % (".".join([str(element) for element in current]), version),
            )

    def test_require_version_exception(self):
        """ should throw a ValueError exception
        """

        def func():
            pass

        compare = ("2.5.a", "2.a", "azerty")
        for version in compare:
            decorator = require_version(version)
            self.assertRaises(ValueError, decorator, func)

    def test_require_module_good(self):
        """ should return the same function
        """

        def func():
            pass

        module = "sys"
        decorator = require_module(module)
        self.assertEqual(
            func,
            decorator(func),
            "module %s exists : function \
            return by the decorator should be the same."
            % module,
        )

    def test_require_module_bad(self):
        """ should return a different function : skipping test
        """

        def func():
            pass

        modules = ("bla", "blo", "bli")
        for module in modules:
            try:
                __import__(module)
            except ImportError:
                decorator = require_module(module)
                self.assertNotEqual(
                    func,
                    decorator(func),
                    "module %s does \
                    not exist : function return by the decorator should \
                    NOT be the same."
                    % module,
                )
                return
        print(
            "all modules in %s exist. Could not test %s"
            % (", ".join(modules), sys._getframe().f_code.co_name)
        )


class TagTC(TestCase):
    def setUp(self):
        @tag("testing", "bob")
        def bob(a, b, c):
            return (a + b) * c

        self.func = bob

        class TagTestTC(TestCase):
            tags = Tags("one", "two")

            def test_one(self):
                self.assertTrue(True)

            @tag("two", "three")
            def test_two(self):
                self.assertTrue(True)

            @tag("three", inherit=False)
            def test_three(self):
                self.assertTrue(True)

        self.cls = TagTestTC

    def test_tag_decorator(self):
        bob = self.func

        self.assertEqual(bob(2, 3, 7), 35)
        self.assertTrue(hasattr(bob, "tags"))
        self.assertSetEqual(bob.tags, set(["testing", "bob"]))

    def test_tags_class(self):
        tags = self.func.tags

        self.assertTrue(tags["testing"])
        self.assertFalse(tags["Not inside"])

    def test_tags_match(self):
        tags = self.func.tags

        self.assertTrue(tags.match("testing"))
        self.assertFalse(tags.match("other"))

        self.assertFalse(tags.match("testing and coin"))
        self.assertTrue(tags.match("testing or other"))

        self.assertTrue(tags.match("not other"))

        self.assertTrue(tags.match("not other or (testing and bibi)"))
        self.assertTrue(tags.match("other or (testing and bob)"))

    def test_tagged_class(self):
        def options(tags):
            class Options(object):
                tags_pattern = tags

            return Options()

        tc = self.cls("test_one")

        runner = SkipAwareTextTestRunner()
        self.assertTrue(runner.does_match_tags(tc.test_one))
        self.assertTrue(runner.does_match_tags(tc.test_two))
        self.assertTrue(runner.does_match_tags(tc.test_three))

        runner = SkipAwareTextTestRunner(options=options("one"))
        self.assertTrue(runner.does_match_tags(tc.test_one))
        self.assertTrue(runner.does_match_tags(tc.test_two))
        self.assertFalse(runner.does_match_tags(tc.test_three))

        runner = SkipAwareTextTestRunner(options=options("two"))
        self.assertTrue(runner.does_match_tags(tc.test_one))
        self.assertTrue(runner.does_match_tags(tc.test_two))
        self.assertFalse(runner.does_match_tags(tc.test_three))

        runner = SkipAwareTextTestRunner(options=options("three"))
        self.assertFalse(runner.does_match_tags(tc.test_one))
        self.assertTrue(runner.does_match_tags(tc.test_two))
        self.assertTrue(runner.does_match_tags(tc.test_three))

        runner = SkipAwareTextTestRunner(options=options("two or three"))
        self.assertTrue(runner.does_match_tags(tc.test_one))
        self.assertTrue(runner.does_match_tags(tc.test_two))
        self.assertTrue(runner.does_match_tags(tc.test_three))

        runner = SkipAwareTextTestRunner(options=options("two and three"))
        self.assertFalse(runner.does_match_tags(tc.test_one))
        self.assertTrue(runner.does_match_tags(tc.test_two))
        self.assertFalse(runner.does_match_tags(tc.test_three))


if __name__ == "__main__":
    unittest_main()