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Slide 1
--------
Title Slide
** Writing Tests in Django**
Slide 2
--------
**Learning Objectives**
In this tutorial, we will learn to;
- Write tests in django
- Run tests in django
Slide 3
---------------
**System Requirements**
- Ubuntu 16.10
- Python 3.5 or higher version
- python3.4-venv
Slide 4
---------------
**Pre-requisites**
In order to follow this tutorial, you need to know;
- how to create models in django
- how to use django shell
- If not, see the relevant django tutorial on http://spoken-tutorial.org
Slide 5
-------
** Testing in Django**
- Automated testing is very useful
- We can validate our code during development
- Testing is very complex, as we need to test models, views and forms.
- In this tutorial we learn to write tests for models
Demonstration
-------------
- Write tests in tests.py in blog app
from django.test import TestCase
# Create your tests here.
from blog.models import Blog
class BlogTestCase(TestCase):
def setUp(self):
Blog.objects.create(name='Blog1')
def test_blog_created(self):
blog = Blog.objects.get(id=1)
name = 'Blog1'
self.assertEqual(blog.name, name)
- Run test
python manage.py test blog
We will see test ran successfully as follow:
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
.
----------------------------------------------------------------------
Ran 1 test in 0.002s
OK
Destroying test database for alias 'default'...
Demonstration
-------------
**Adding one more testcase**
def test_was_created_recently(self):
blog = Blog.objects.get(id=1)
is_created_recently = True
self.assertEqual(blog.was_created_recently(), is_created_recently)
- Run
- Output will be same as above except for following:
Ran 2 tests in 0.003s
Demonstration
-------------
**Failing testcase**
- Edit testcase
def test_was_created_recently(self):
blog = Blog.objects.get(id=1)
is_created_recently = False # Change True to False
self.assertEqual(blog.was_created_recently(), is_created_recently)
- Run
- Show assertion error in the following output:
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
.F
======================================================================
FAIL: test_was_created_recently (blog.tests.BlogTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/ttt/my-django/myproject/mysite/blog/tests.py", line 19, in test_was_created_recently
self.assertEqual(blog.was_created_recently(), is_created_recently)
AssertionError: True != False
----------------------------------------------------------------------
Ran 2 tests in 0.003s
FAILED (failures=1)
Destroying test database for alias 'default'...
Demonstration
-------------
** Using assertTrue **
- Edit testcase
def test_was_created_recently(self):
blog = Blog.objects.get(id=1)
self.assertTrue(blog.was_created_recently())
- Run
- Output
Ran 2 tests in 0.003s
OK
Demonstration
--------------
- Run individual test case
- python manage.py test blog.tests.BlogTestCase.test_was_created_recently
- Output
Ran 1 test in 0.002s
OK
Demonstration
--------------
- Add testcase for Article model
- Run
(For script creator: Can add this or give this as an assignment)
**Concluding Slides**
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