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我是我的烧瓶应用程序，我有一个路由/控制器来创建我称之为实体的东西：

@api.route('/entities', methods=['POST'])
def create_entity():
    label = request.get_json()['label']
    entity = entity_context.create(label)
    print('the result of creating the entity: ')
    print(entity)
    return entity

创建实体后，将打印以下内容：

the result of creating the entity: 
{'label': 'Uganda', '_id': '{"$oid": "5ff5df24bb80fcf812631c53"}'}

我为此控制器编写了以下测试：

@given("an entity is created with label Uganda", target_fixture="create_entity")
def create_entity(test_client):
    result = test_client.post('api/entities', json={"label": "Uganda"})
    return result

@then("this entity can be read from the db")
def get_entities(create_entity, test_client):
    print('result of create entity: ')
    print(create_entity)
    response = test_client.get('api/entities').get_json()
    assert create_entity['_id'] in list(map(lambda x : x._id, response))

测试客户端定义conftest.py如下：

@pytest.fixture
def test_client():
    flask_app = init_app()
    # Create a test client using the Flask application configured for testing
    with flask_app.test_client() as flask_test_client:
        return flask_test_client

我的测试失败并出现以下错误：

create_entity = <Response streamed [200 OK]>, test_client = <FlaskClient <Flask 'api'>>

    @then("this entity can be read from the db")
    def get_entities(create_entity, test_client):
        print('result of create entity: ')
        print(create_entity)
        response = test_client.get('api/entities').get_json()
>       assert create_entity['_id'] in list(map(lambda x : x._id, response))
E       TypeError: 'Response' object is not subscriptable

the result of creating the entity: 
{'label': 'Uganda', '_id': '{"$oid": "5ff5df24bb80fcf812631c53"}'}
result of create entity: 
<Response streamed [200 OK]>.

显然create_entity不是返回一个简单的对象，而是一个流式响应：

<Response streamed [200 OK]>

如果控制器返回 json，我不明白为什么这不会返回简单的 json？

4

1 回答 1

1

你的测试有一些问题

首先你没有在烧瓶测试上下文中执行：

@pytest.fixture
def test_client():
    flask_app = init_app()
    # Create a test client using the Flask application configured for testing
    with flask_app.test_client() as flask_test_client:
        return flask_test_client

这需要yield flask_test_client- 否则上下文管理器在您的测试运行时已经退出

其次，你得到一个Response对象，create_entity因为这是你的@given夹具返回的：

@given("an entity is created with label Uganda", target_fixture="create_entity")
def create_entity(test_client):
    result = test_client.post('api/entities', json={"label": "Uganda"})
    return result

的结果.post(...)是一个Response对象，如果你希望它成为 json 的字典，你需要调用.get_json()它

于 2021-01-06T19:48:01.573 回答