Test Cases With Django

To check what ever you write in your application development is it true Or it functioning as per your expectation. when your project is large and large then how you handle correctness of your functionality etc.. 🤗

we just focus on Unit Testing And next Post on focus on functional testing

pip3 install coverage

Instead of a single tests.py in the app folder you can create a tests folder where each file holds tests for a single face of the application

Here you can see a tests folder with api.py and web.py. api.py holds tests for API endpoints, while web.py can test regular HTML pages. You can also have a models.py for testing models.

Consider two models: Post and Tag. A post can have many Tag, and an Tag can have many Posts connected. To express this relationship we can apply a ManyToManyField from Post to Tag.

blog/model.py

Apply the migration:

Lets write test cases for above models: blog/tests/models.py

Now we just created one post with two Tags

Resources:

Some change in ‘blog/model.py’ file

Then Test using ,

create a new file in blog/tests/web.py. In this file we can import TestCase, our model, and write a skeleton for the test:

Now to test this feature we need to create some data to send alongside with the POST request. Note that the data should match the model’s fields.

Create new model for blogger this will be the owner of post.

Pest into the ‘blog/tests/web.py’

Now with Django test client we send the request. As a first test we can check if a Blogger instance is created in the database:

Run again :

Show some pages only those who authenticated

Note that you should swap from django.contrib.auth.models import User with any custom Django user, if present.

Resources:

This was intro about some of the test cases, go first smaller and small test cases and then go though test cases given in book Test-Driven Development with Python written by Harry J.W. Percival

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