Learning best practices to write tests

So far, we have explored all the advantages of writing test cases and also how we can write them for different Django components. In this section, we shall learn about best practices to write test cases.

Using unit tests more often

Writing test cases is always tricky, and it is very difficult to write test cases for all scenarios. As applications become complex, developers may not be able to write test cases to cover all scenarios, so the best approach to tackle this problem is by writing maximum unit tests. Whenever we are writing new business logic, we generally add small functions/methods that will have new/updated business logic, so writing unit tests for such functions helps to add more coverage. If we have written modular code, then it is easy to write unit tests for our application, and this is something that developers need to understand – writing test cases is difficult only when the application code is not modular and structured...