python runtime_error ai_generated true

AssertionError: assert 200 == 404 + where 200 = <Response [200]>.status_code

ID: python/pytest-assertion-rewrite-failure

Also available as: JSON · Markdown · 中文
80%Fix Rate
88%Confidence
0Evidence
2024-06-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

The test expected a 404 status code but received 200. This indicates the API endpoint returned a successful response instead of the expected error. Common causes include incorrect URL, missing authentication, or the resource actually existing when the test assumes it doesn't.

generic

中文

测试期望返回404状态码但收到了200。这表明API端点返回了成功响应而不是预期的错误。常见原因包括URL错误、缺少身份验证，或者资源实际存在而测试假设它不存在。

Workarounds

  1. 90% success 
    Print the full URL and check if the resource exists:

print(response.url)
# Manually query the database or use curl to confirm the resource is missing before the test.
  2. 85% success 
    Use fixtures to guarantee the resource does not exist:

@pytest.fixture
def cleanup_user():
    User.objects.filter(id=123).delete()
    yield
    User.objects.filter(id=123).delete()
  3. 80% success 
    If the endpoint returns 200 for authorized users, adjust the test to use an unauthorized client or a different user without access.

Dead Ends

Common approaches that don't work:

  1. 95% fail

    This masks the real issue and makes the test useless for detecting regressions; the test will always pass regardless of actual behavior.

  2. 80% fail

    If the resource is immediately available, sleeping won't change the status code from 200 to 404; it just slows down tests.

  3. 75% fail

    This bypasses the real integration and may hide bugs in the actual endpoint; the test no longer validates real behavior.