Python、API 测试：断言失败，但实际和预期似乎相同

Question

Im trying to run simple negative api test in Pycharm. It compares json response of api call with "expected" data. Call returns this:

{'error_message': 'invalid UUID format'}

And in our test we asserting actual response with ^ data. Test:

def test(environment):
resp = getSomeData(environment, negative)
respString = resp.read().decode('utf-8')
jsonResponse = json.loads(respString)
assert jsonResponse == "{'error_message': 'invalid UUID format'}"

When running this test with pytest in pycharm, it returns

{'error_message': 'invalid UUID format'} != {'error_message': 'invalid UUID format'}

    Expected :{'error_message': 'invalid UUID format'}
    Actual   :{'error_message': 'invalid UUID format'}

Please point me in right direction. Thanks in advance

Answer 1

As pointed out in a comment, your test should compare jsonResponse (which is a dict ) with another dict , and not a string:

assert jsonResponse == {'error_message': 'invalid UUID format'}

The test output is not very friendly in this case, as it makes you think that both objects are identical.