def test_change_cwd(self):
        original_cwd = os.getcwd()

        with support.temp_dir() as temp_path:
            with support.change_cwd(temp_path) as new_cwd:
                self.assertEqual(new_cwd, temp_path)
                self.assertEqual(os.getcwd(), new_cwd)

        self.assertEqual(os.getcwd(), original_cwd)
    def test_change_cwd(self):
        original_cwd = os.getcwd()

        with support.temp_dir() as temp_path:
            with support.change_cwd(temp_path) as new_cwd:
                self.assertEqual(new_cwd, temp_path)
                self.assertEqual(os.getcwd(), new_cwd)

        self.assertEqual(os.getcwd(), original_cwd)
    def test_change_cwd__non_existent_dir__quiet_true(self):
        """Test passing a non-existent directory with quiet=True."""
        original_cwd = os.getcwd()

        with support.temp_dir() as parent_dir:
            bad_dir = os.path.join(parent_dir, 'does_not_exist')
            with support.check_warnings() as recorder:
                with support.change_cwd(bad_dir, quiet=True) as new_cwd:
                    self.assertEqual(new_cwd, original_cwd)
                    self.assertEqual(os.getcwd(), new_cwd)
                warnings = [str(w.message) for w in recorder.warnings]

        expected = ['tests may fail, unable to change CWD to: ' + bad_dir]
        self.assertEqual(warnings, expected)
    def test_temp_dir(self):
        """Test that temp_dir() creates and destroys its directory."""
        parent_dir = tempfile.mkdtemp()
        parent_dir = os.path.realpath(parent_dir)

        try:
            path = os.path.join(parent_dir, 'temp')
            self.assertFalse(os.path.isdir(path))
            with support.temp_dir(path) as temp_path:
                self.assertEqual(temp_path, path)
                self.assertTrue(os.path.isdir(path))
            self.assertFalse(os.path.isdir(path))
        finally:
            support.rmtree(parent_dir)
    def test_change_cwd__non_existent_dir__quiet_true(self):
        """Test passing a non-existent directory with quiet=True."""
        original_cwd = os.getcwd()

        with support.temp_dir() as parent_dir:
            bad_dir = os.path.join(parent_dir, 'does_not_exist')
            with support.check_warnings() as recorder:
                with support.change_cwd(bad_dir, quiet=True) as new_cwd:
                    self.assertEqual(new_cwd, original_cwd)
                    self.assertEqual(os.getcwd(), new_cwd)
                warnings = [str(w.message) for w in recorder.warnings]

        expected = ['tests may fail, unable to change CWD to: ' + bad_dir]
        self.assertEqual(warnings, expected)
    def test_temp_dir(self):
        """Test that temp_dir() creates and destroys its directory."""
        parent_dir = tempfile.mkdtemp()
        parent_dir = os.path.realpath(parent_dir)

        try:
            path = os.path.join(parent_dir, 'temp')
            self.assertFalse(os.path.isdir(path))
            with support.temp_dir(path) as temp_path:
                self.assertEqual(temp_path, path)
                self.assertTrue(os.path.isdir(path))
            self.assertFalse(os.path.isdir(path))
        finally:
            support.rmtree(parent_dir)
    def test_change_cwd__non_existent_dir(self):
        """Test passing a non-existent directory."""
        original_cwd = os.getcwd()

        def call_change_cwd(path):
            with support.change_cwd(path) as new_cwd:
                raise Exception("should not get here")

        with support.temp_dir() as parent_dir:
            non_existent_dir = os.path.join(parent_dir, 'does_not_exist')

            # XXX backport: self.assertRaises(FileNotFoundError, call_change_cwd, non_existent_dir)
            with self.assertRaises(OSError) as cm:
                call_change_cwd(non_existent_dir)
            self.assertEqual(cm.exception.errno, errno.ENOENT)

        self.assertEqual(os.getcwd(), original_cwd)
    def test_temp_dir__existing_dir__quiet_true(self):
        """Test passing a directory that already exists with quiet=True."""
        path = tempfile.mkdtemp()
        path = os.path.realpath(path)

        try:
            with support.check_warnings() as recorder:
                with support.temp_dir(path, quiet=True) as temp_path:
                    self.assertEqual(path, temp_path)
                warnings = [str(w.message) for w in recorder.warnings]
            # Make sure temp_dir did not delete the original directory.
            self.assertTrue(os.path.isdir(path))
        finally:
            shutil.rmtree(path)

        expected = ['tests may fail, unable to create temp dir: ' + path]
        self.assertEqual(warnings, expected)
    def test_change_cwd__non_existent_dir(self):
        """Test passing a non-existent directory."""
        original_cwd = os.getcwd()

        def call_change_cwd(path):
            with support.change_cwd(path) as new_cwd:
                raise Exception("should not get here")

        with support.temp_dir() as parent_dir:
            non_existent_dir = os.path.join(parent_dir, 'does_not_exist')

            # XXX backport: self.assertRaises(FileNotFoundError, call_change_cwd, non_existent_dir)
            with self.assertRaises(OSError) as cm:
                call_change_cwd(non_existent_dir)
            self.assertEqual(cm.exception.errno, errno.ENOENT)

        self.assertEqual(os.getcwd(), original_cwd)
    def test_temp_dir__existing_dir__quiet_true(self):
        """Test passing a directory that already exists with quiet=True."""
        path = tempfile.mkdtemp()
        path = os.path.realpath(path)

        try:
            with support.check_warnings() as recorder:
                with support.temp_dir(path, quiet=True) as temp_path:
                    self.assertEqual(path, temp_path)
                warnings = [str(w.message) for w in recorder.warnings]
            # Make sure temp_dir did not delete the original directory.
            self.assertTrue(os.path.isdir(path))
        finally:
            shutil.rmtree(path)

        expected = ['tests may fail, unable to create temp dir: ' + path]
        self.assertEqual(warnings, expected)
 def call_temp_dir(path):
     with support.temp_dir(path) as temp_path:
         raise Exception(
             "should not get here"
         )  # pragma: no cover (intentionally unreachable)
 def test_temp_dir__path_none(self):
     """Test passing no path."""
     with support.temp_dir() as temp_path:
         self.assertTrue(os.path.isdir(temp_path))
     self.assertFalse(os.path.isdir(temp_path))
 def call_temp_dir(path):
     with support.temp_dir(path) as temp_path:
         raise Exception("should not get here")   # pragma: no cover (intentionally unreachable)
 def test_temp_dir__path_none(self):
     """Test passing no path."""
     with support.temp_dir() as temp_path:
         self.assertTrue(os.path.isdir(temp_path))
     self.assertFalse(os.path.isdir(temp_path))