[Solved] You wrote this fixture but tests fail with AttributeError: 'NoneType'... What is the likely problem?@pytest.fixture def client(): app = Flask(__name__) client = app.test_client() client.get('/') | Flask

Flask - Testing Flask Applications

You wrote this fixture but tests fail with AttributeError: 'NoneType' object has no attribute 'get'. What is the likely problem?

@pytest.fixture
def client():
    app = Flask(__name__)
    client = app.test_client()
    client.get('/')

AFlask app is missing import statement

BThe fixture does not return the client object

Cclient.get('/') is called too early

Dpytest fixture decorator is missing

Step-by-Step Solution

Solution:

Step 1: Check fixture return statement
The fixture does not return anything, so returns None by default.
Step 2: Understand test uses client parameter
Tests expect client to be the test client object, but get None causing error.
Final Answer:
The fixture does not return the client object -> Option B
Quick Check:
Fixture must return client object [OK]

Quick Trick: Always return the test client from fixture [OK]

Common Mistakes:

MISTAKES

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More Flask Quizzes

You wrote this fixture but tests fail with AttributeError: 'NoneType' object has no attribute 'get'. What is the likely problem?