# Pastebin Btix4cVS
    def test_modify_user_invalidates_cache(self):
        self.use_keystone_v2()
        user_data = self._get_user_data(email='test@example.com')
        self.register_uri(
            'GET',
            self.get_mock_url(
                service_type='identity',
                interface='admin',
                resource='users'),
            status_code=200,
            json={'users': []})
        # first cache an empty list
        self.assertEqual([], self.cloud.list_users())

        # now add one
        self.register_uri(
            'POST',
            self.get_mock_url(
                service_type='identity',
                interface='admin',
                resource='users'),
            status_code=204,
            json=user_data.json_response,
            validate=user_data.json_request)
        self.register_uri(
            'GET',
            self.get_mock_url(
                service_type='identity',
                interface='admin',
                resource='users',
                append=[user_data.user_id]),
            status_code=200,
            json=user_data.json_response)
        created = self.cloud.create_user(name=user_data.name,
                                         email=user_data.email)
        self.assertEqual(user_data.user_id, created['id'])
        self.assertEqual(user_data.name, created['name'])
        self.assertEqual(user_data.email, created['email'])

        self.register_uri(
            'GET',
            self.get_mock_url(
                service_type='identity',
                interface='admin',
                resource='users'),
            status_code=200,
            json={'users': [user_data.json_response['user']]}
        )

        # Cache should have been invalidated
        users = self.cloud.list_users()
        self.assertEqual(1, len(users))
        self.assertEqual(user_data.user_id, users[0]['id'])
        self.assertEqual(user_data.name, users[0]['name'])
        self.assertEqual(user_data.email, users[0]['email'])

        # Update and check to see if it is updated
        new_resp = user_data.json_response.copy()
        new_resp['email'] = 'Nope@Nope.Nope'
        new_req = {'user': {'email': new_resp['email']}}
        self.register_uri(
            'POST',
            self.get_mock_url(
                service_type='identity',
                interface='admin',
                resource='users'),
            status_code=204,
            json=new_resp.json_response,
            validate=new_req)
        self.register_uri(
            'GET',
            self.get_mock_url(
                service_type='identity',
                interface='admin',
                resource='users',
                append=[user_data.user_id]),
            status_code=200,
            json=new_resp)
        updated = self.cloud.update_user(user_data.user_id,
                                         email=new_resp['email'])
        self.assertEqual(user_data.user_id, updated.id)
        self.assertEqual(user_data.name, updated.name)
        self.assertEqual(new_resp['email'], updated.email)
        users = self.cloud.list_users()
        self.assertEqual(1, len(users))
        self.assertEqual(user_data.user_id, users[0]['id'])
        self.assertEqual(user_data.name, users[0]['name'])
        self.assertEqual(new_resp['email'], users[0]['email'])
        # Now delete and ensure it disappears
        self.register_uri(
            'DELETE',
            self.get_mock_url(
                service_type='identity',
                interface='admin',
                resource='users',
                append=[user_data.user_id]),
            status_code=204)
        self.register_uri(
            'GET',
            self.get_mock_url(
                service_type='identity',
                interface='admin',
                resource='users'),
            status_code=200,
            json={'users': []})
        self.cloud.delete_user(user_data.user_id)
        self.assertEqual([], self.cloud.list_users())