[Solved] You want to test a Django view that calls an external payment API. Which approach correctly mocks the external call and verifies the view handles a failure response gracefully? from unittest.... | Django

Django - Testing Django Applications

You want to test a Django view that calls an external payment API. Which approach correctly mocks the external call and verifies the view handles a failure response gracefully?

from unittest.mock import patch
from django.test import Client

@patch('payments.api.call_payment')
def test_payment_failure(mock_call):
    mock_call.return_value = {'status': 'error', 'code': 500}
    client = Client()
    response = client.post('/pay/')
    print(response.status_code)

What should you add to the test to check the view's behavior?

AAssert response.status_code is 500 to confirm failure handling

BRemove patch decorator to test real API call

CAssert mock_call was called once and response.status_code is 200

DSet mock_call.return_value to None to simulate failure

Step-by-Step Solution

Solution:

Step 1: Understand mocking external payment API
The patch replaces call_payment with a mock returning an error response.
Step 2: Verify view handles error but returns HTTP 200
The view should catch the error and respond with HTTP 200 (page loads with error message), not propagate 500.
Step 3: Check mock call was made
Asserting mock_call was called confirms the external API was invoked in the view.
Final Answer:
Assert mock_call was called once and response.status_code is 200 -> Option C
Quick Check:
Mock call checked + 200 response = B [OK]

Quick Trick: Check mock call and expect view to handle errors with 200 [OK]

Common Mistakes:

MISTAKES

Expecting 500 status from view on API error
Not asserting mock call was made
Removing patch and making real calls

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More Django Quizzes

You want to test a Django view that calls an external payment API. Which approach correctly mocks the external call and verifies the view handles a failure response gracefully?

Step 1: Understand mocking external payment API

Step 2: Verify view handles error but returns HTTP 200

Step 3: Check mock call was made

Final Answer:

Quick Check:

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