TestCase and SimpleTestCase in Django - Mini Project: Build & Apply

Using TestCase and SimpleTestCase in Django

📖 Scenario: You are building a Django app that needs to test some simple logic and database interactions.

🎯 Goal: Learn how to write tests using Django's SimpleTestCase for simple logic and TestCase for database-related tests.

📋 What You'll Learn

Create a simple function to test with SimpleTestCase

Create a Django model to test with TestCase

Write a SimpleTestCase class to test the simple function

Write a TestCase class to test the model's database behavior

💡 Why This Matters

🌍 Real World

Testing is essential in Django projects to ensure code works correctly and database interactions behave as expected.

💼 Career

Knowing how to write tests with SimpleTestCase and TestCase is a key skill for Django developers to maintain reliable applications.

1

Create a simple function to test

Create a function called add_numbers that takes two parameters a and b and returns their sum.

Django

# Your code here

Need a hint?

Define a function with two parameters and return their sum using return a + b.

2

Create a Django model for testing

Create a Django model called Book with a single field title that is a CharField with max length 100.

Django

def add_numbers(a, b):
    return a + b

# Your code here

Need a hint?

Import models from django.db and define a class Book inheriting from models.Model. Add a title field as models.CharField(max_length=100).

3

Write a SimpleTestCase for the add_numbers function

Write a test class called AddNumbersTests that inherits from SimpleTestCase. Add a test method test_add that asserts add_numbers(3, 4) equals 7.

Django

def add_numbers(a, b):
    return a + b

from django.db import models

class Book(models.Model):
    title = models.CharField(max_length=100)

# Your code here

Need a hint?

Import SimpleTestCase from django.test. Define a test class inheriting from it. Write a test method using self.assertEqual to check the function result.

4

Write a TestCase for the Book model

Write a test class called BookModelTests that inherits from TestCase. Add a test method test_create_book that creates a Book with title 'Django Basics' and asserts the book count is 1.

Django

def add_numbers(a, b):
    return a + b

from django.db import models

class Book(models.Model):
    title = models.CharField(max_length=100)

from django.test import SimpleTestCase

class AddNumbersTests(SimpleTestCase):
    def test_add(self):
        self.assertEqual(add_numbers(3, 4), 7)

# Your code here

Need a hint?

Import TestCase from django.test. Define a test class inheriting from it. Create a Book instance and assert the count is 1.