Error when reverse url with multiple arguments – Django

Question

I’m writing a test for an url, problem is it fails when I try to pass multiple arguments, here is some code:

#test_urls.py
from django.test import SimpleTestCase
from django.urls import reverse, resolve
from cardiotesting.views import *

class TestUrls(SimpleTestCase):
    def test_new_cardio(id_patient, protocol):
        id_patient = '05'
        protocol = 'fox'
        url = reverse('new_cardio_testing', args=[id_patient, protocol])
        print(resolve(url))

#urls.py
from django.urls import path
from . import views

urlpatterns = [
    path('new/<str:id_patient>', views.new_cardio_testing, name='new_cardio_testing'),
]

#views.py
def new_cardio_testing(id_patient, protocol):
    pass

When I run the test it returns:

.E
======================================================================
ERROR: test_new_cardio_testing (cardiotesting.tests.test_urls.TestUrls)
----------------------------------------------------------------------
TypeError: TestUrls.test_new_cardio_testing() missing 1 required positional argument: 'protocol'

But when there is only one argument the test succeeds.

Asked By: Lucas VB

||

Source

Answer 1

Your urlpatterns seem unfit to accept this format.
Try the following:

urlpatterns = [
    path('new/<str:id_patient>/<str:protocol>/', views.new_cardio_testing, name='new_cardio_testing'),
    # Django loves it's trailing slashes.
]

Answered By: nigel239

Answer 2

test methods just take one parameter and that is self, so your test class must be something like this:

class TestUrls(SimpleTestCase):
    def test_new_cardio(self):
        id_patient = '05'
        protocol = 'fox'
        url = reverse('new_cardio_testing', args=[id_patient, protocol])
        print(resolve(url))

Answered By: Amrez

Error when reverse url with multiple arguments – Django

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