Hi people,
I am following the book Test-Driven Development with Python
<https://www.amazon.in/Test-Driven-Development-Python-Selenium-JavaScript/dp/1491958707>
by
*Harry J.W. Perceval.* The book is using Django version 1.7 which is
outdated as of now so I started with version 2.1.
I am trying to unit test my index view. One unit-test that I have written
is testing whether the index view returns correct HTML or not by comparing
the input received through
django.template.loader.render_to_string
the unit-test fail with the following traceback
python manage.py test
Creating test database for alias 'default'...
.System check identified no issues (0 silenced).
F.
======================================================================
FAIL: test_index_view_returns_correct_html (lists.tests.IndexViewTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "tests.py", line 24, in test_index_view_returns_correct_html
self.assertEqual(expected_html, actual_html)
AssertionError: '<!DO[263
chars]lue="BJMT1b9fxuXOGugp00SDypeTYZxvlmc6KtBSYMDon[198 chars]l>\n' !=
'<!DO[263 chars]lue="R05ZiWMASEWMurA8Rdo8bnA0mTwqFTqA0KUYfxgJI[198
chars]l>\n'
----------------------------------------------------------------------
Ran 3 tests in 0.006s
FAILED (failures=1)
Destroying test database for alias 'default'...
Process finished with exit code 1
It was clear that the csrf token is causing the test to fail. Is there any
way to test it, or should it be tested? I ask this as when I changed my
Django version to 1.7, the tests were passing, even after giving the csrf
token field in the form. I tried going through the changelogs but 1.7 is
far behind (beginner here). Please find the code snippets, directory
structure provided below.
*lists/views.py*
*from django.http import HttpResponsefrom django.shortcuts import render#
Create your views here.def index(request): if request.method == 'POST':
return HttpResponse(request.POST['item_text']) return render(request,
'index.html')*
*lists/test.py*
*from django.http import HttpRequestfrom django.template.loader import
render_to_stringfrom django.test import TestCasefrom django.urls import
resolvefrom lists.views import index# Create your tests here.class
IndexViewTest(TestCase): def
test_root_url_resolves_to_home_page_view(self): [...] def
test_index_view_returns_correct_html(self): request = HttpRequest()
response = index(request) actual_html =
response.content.decode() expected_html =
render_to_string('index.html', request=request)
self.assertEqual(expected_html, actual_html) def
test_index_view_can_save_a_post_request(self): [...]requirements.txt*
*Django==2.1.7pytz==2018.9selenium==3.141.0urllib3==1.24.*
*settings.py*
*[...]# Application definitionINSTALLED_APPS = [ 'django.contrib.admin',
'django.contrib.auth', 'django.contrib.contenttypes',
'django.contrib.sessions', 'django.contrib.messages',
'django.contrib.staticfiles', 'lists',][...]*
*Directory Structure*
[image: Screen Shot 2019-03-28 at 9.36.56 PM.png]
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