Science Knowings: JavaScript Course For Social Media

Test Driven Development (TDD)

Welcome to Test Driven Development (TDD)

Welcome back! You're now familiar with the basics of User Stories. Let's take a surprising turn and introduce Test Driven Development (TDD), a software development approach that emphasizes testing before writing code.

What is TDD?

TDD is a development process where you write tests before writing the actual code. It helps you define clear requirements, design robust code, and prevent regressions.

Benefits of TDD

  • Enforces clear requirements
  • Improves code quality
  • Reduces bugs and regressions
  • Facilitates refactoring and maintenance

TDD Workflow

The TDD workflow consists of three main phases:

  1. Red: Write a test that fails
  2. Green: Write code that makes the test pass
  3. Refactor: Refine the code to improve its quality

Red-Green-Refactor Cycle

TDD follows the Red-Green-Refactor cycle repeatedly. This cycle helps you develop code incrementally and ensures that your tests are always passing.

Tools for TDD

There are various tools that support TDD, including testing frameworks (e.g., Jest) and mocking libraries (e.g., Sinon).

Getting Started with TDD

To get started with TDD, you can follow these steps:

  1. Define the test scenarios
  2. Write failing tests
  3. Implement the code
  4. Refactor the code

Unit Testing with Jest

Jest is a popular testing framework for JavaScript. It provides various features to write and run tests easily.

Mocking and Stubbing in TDD

Mocking and stubbing are techniques used to isolate the code under test from its dependencies. This allows you to test the specific behavior of your code without external influences.

Next Topic: Behavior Driven Development (BDD)

Now that you're familiar with TDD, let's explore Behavior Driven Development (BDD), another approach to software development that emphasizes user-centric requirements. Follow us to learn more about BDD!