def test_is_symlink_with_false(self):
        """Testing FileDiff.is_symlink with False"""
        filediff = self.create_filediff(self.diffset)
        filediff.extra_data['is_symlink'] = True
        filediff.is_symlink = False

        # Explicitly test against the booleans, to avoid truthiness tests.
        self.assertIs(filediff.is_symlink, False)
        self.assertIs(filediff.extra_data.get('is_symlink'), False)