def load(self, requirements_file=None):
        """Load or reload requirements from a requirements.txt file.

        :param requirements_file: if not given, the filename used from
            initialization will be read again.
        """
        if requirements_file is None:
            requirements_file = self.filename
            if requirements_file is None:
                raise ValueError("no filename provided")
        elif isinstance(requirements_file, text_type):
            requirements_file = Path(requirements_file)
        self.clear()
        with requirements_file.open() as f:
            self.loads(f.read())

        if isinstance(requirements_file, (text_type, Path)):
            self.filename = requirements_file
def test_conf_inline_tls(self):
        fake_context = mock.Mock()
        with mock.patch.object(ssl, 'create_default_context',
                               return_value=fake_context):
            with mock.patch.object(memcache, 'ConfigParser',
                                   get_config_parser()):
                memcache.MemcacheMiddleware(
                    FakeApp(),
                    {'tls_enabled': 'true',
                     'tls_cafile': 'cafile',
                     'tls_certfile': 'certfile',
                     'tls_keyfile': 'keyfile'})
            ssl.create_default_context.assert_called_with(cafile='cafile')
            fake_context.load_cert_chain.assert_called_with('certfile',
                                                            'keyfile')