如何匹配python响应库中的数字模式

Question

I am unit testing in Python (pytest, responses library - It's for an API project...). I am creating fake responses which have to match a request string. The only difference in those responses is the number in the middle of the string:

    responses.add(
        GET, 
        'http://app/projects/1200979733003518/tasks?opt_pretty=false', 
        status=200,
        body=json.dumps(res_t)
    )
    responses.add(
        GET, 
        'http://app/projects/1200979733003526/tasks?opt_pretty=false', 
        status=200,
        body=json.dumps(res_t)
    )
    responses.add(
        GET, 
        'http://app/projects/1201345940827570/tasks?opt_pretty=false', 
        status=200,
        body=json.dumps(res_t)
    )

I want to get rid of the repetition. I tried using python's re.compile, my idea was to do something like this:

    responses.add(
    GET, 
    re.compile('http://app/projects/\\[0-9]+/tasks?opt_pretty=false'), 
    status=200,
    body=json.dumps(res_t)
)

It doesn't work. Read the manual for re, but can't come up with a working solution. How can i achieve that the response matches any number in my strings at this position?

Answer 1

If you just want to generate random values, you can use something like this:

id = ''.join(random.choices(string.digits, k=16))

responses.add(
    GET, 
    f'http://app/projects/{id}/tasks?opt_pretty=false', 
    status=200,
    body=json.dumps(res_t)
)

Or if you want to use know values, you can use something like Pytest Parametrize feature. That would look like this:

@pytest.mark.parametrize("id", ["123456789", "897654321", "654789123"])
def test_api(id):

    ...

    responses.add(
        GET, 
        f'http://app/projects/{id}/tasks?opt_pretty=false',
        status=200,
        body=json.dumps(res_t)
    )

With parametrize, your test will run like in a "for loop" which every run, the id will have a different given value.