I am doing the django tutorial and I don’t understand why this test is failing. I am unsure if this is the expected behavior from following the tutorial or if I messed something up along the way. I am expecting an empty list, but the lists differ.
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
....F....
======================================================================
FAIL: test_future_question (polls.tests.QuestionIndexViewTests)
Questions with a pub_date in the future aren't displayed on
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/pop/Python3/django_tutorial/poll/polls/tests.py", line 76, in test_future_question
self.assertQuerysetEqual(['latest_question_list'], [])
File "/home/pop/.local/lib/python3.10/site-packages/django/test/testcases.py", line 1328, in assertQuerysetEqual
return self.assertEqual(list(items), values, msg=msg)
AssertionError: Lists differ: ['latest_question_list'] != []
First list contains 1 additional elements.
First extra element 0:
'latest_question_list'
- ['latest_question_list']
+ []
----------------------------------------------------------------------
Ran 9 tests in 0.015s
FAILED (failures=1)
Destroying test database for alias 'default'...
‘latest_question_list’ is what I assigned to the context_object_name of my IndexView class, but from there I don’t know where to go.
Thanks for looking at it. I compared the tutorial’s test with a diff tool, but I still might have missed something.
from django.urls import reverse
from django.test import TestCase
from django.utils import timezone
from .models import Question
# Create your tests here.
class QuestModelTests(TestCase):
def test_was_published_recently_with_future_question(self):
"""
was_published_recently() returns False for questions whose pub_date is in the future.
"""
time = timezone.now() + datetime.timedelta(days=30)
future_question = Question(pub_date=time)
self.assertIs(future_question.was_published_recently(), False)
def test_was_published_recently_with_old_question(self):
"""
was_publieshed_recently() returns False for questions whose pub_date
is older than 1 day
"""
time = timezone.now() - datetime.timedelta(days=1, seconds=1)
old_question = Question(pub_date=time)
self.assertIs(old_question.was_published_recently(), False)
def test_was_publieshed_recently_with_recent_question(self):
"""was_published_recently() returns True for questions whose pub_date is within the last day.
"""
time = timezone.now() - datetime.timedelta(hours=23, minutes=59, seconds=59)
recent_question = Question(pub_date=time)
self.assertIs(recent_question.was_published_recently(), True)
def create_question(question_text, days):
"""
Create a question with the given 'question_text' and published the
given number of'days offset to now (negative for questions published
in the past, positive for questions that have yet to be published).
"""
time = timezone.now() + datetime.timedelta(days=days)
return Question.objects.create(question_text=question_text, pub_date=time)
class QuestionIndexViewTests(TestCase):
def test_no_questions(self):
"""
If no questions exits, an appropriate message is displayed.
"""
response = self.client.get(reverse('polls:index'))
self.assertEqual(response.status_code, 200)
self.assertContains(response, "No polls are available.")
self.assertQuerysetEqual(response.context['latest_question_list'], [])
def test_past_question(self):
"""
Questions with a pub_date in the past are displayed on the index page.
"""
question = create_question(question_text="Past question", days=-30)
response = self.client.get(reverse('polls:index'))
self.assertQuerysetEqual(
response.context['latest_question_list'],
[question]
)
def test_future_question(self):
"""
Questions with a pub_date in the future aren't displayed on
the index page.
"""
create_question(question_text="Future question.", days=30)
response = self.client.get(reverse('polls:index'))
self.assertContains(response, "No polls are available.")
self.assertQuerysetEqual(['latest_question_list'], [])
def test_future_question_and_past_question(self):
"""
Even if both past and future questions exist, only past questions
are displayed.
"""
question = create_question(question_text="Past question.", days=-30)
create_question(question_text="Future question.", days=30)
response = self.client.get(reverse('polls:index'))
self.assertQuerysetEqual(
response.context['latest_question_list'],
[question],
)
def test_two_past_questions(self):
"""
The questions index page may display multiple questions.
"""
question1 = create_question(question_text="Past question 1.", days=-30)
question2 = create_question(question_text="Past question 2.", days=-5)
response = self.client.get(reverse('polls:index'))
self.assertQuerysetEqual(
response.context['latest_question_list'],
[question2, question1],
)
class QuestionDetailViewTests(TestCase):
def test_future_question(self):
"""
The detail view of a question with a pub_date
in the future returns a 404 not found.
"""
future_question = create_question(question_text="Future Question", days=5)
url = reverse('polls:detail', args=(future_question.id,))
response = self.client.get(url)
self.assertEqual(response.status_code, 404)
def test_future_question(self):
"""
Questions with a pub_date in the future aren't displayed on
the index page.
"""
create_question(question_text="Future question.", days=30)
response = self.client.get(reverse('polls:index'))
self.assertContains(response, "No polls are available.")
self.assertQuerysetEqual(response.context['latest_question_list'], [])
Thanks. Looks like I just needed an extra pair of eyes. My tests are passing now.