Unit Testing in Java Course (How To)

Unit testing is a Java best practice that ensures your code is working how it was intended. It is a critical habit that you should develop early on in your coding adventures.

What you'll learn

• Defining a Unit
• Composition vs. Inheritance
• Test fixtures, test suites and the jUnit test runner

Why Test?

Testing is a critical development practice. It provides countless benefits that we will explore.

Chevron 9 steps

• Introduction

  5:10

• Defining a Unit

  3:34

• How we define units

  3 questions

• Introducing the Project

  4:59

• Beginning the Project

  3 questions

• Code Reuse

  6:12

• Composition vs. Inheritance

  4 questions

• The Quick Prototype

  6:56

• Single Responsibility Principle

  2 questions

How to Test

Let's get our testing environment all set up and walk through how to write and then run our tests.

Chevron 8 steps

• Meet JUnit

  2:56

• Setting Up a Project for Tests

  10:22

• Running Tests and Reading Output

  3:55

• JUnit basics

  3 questions

• Assertions

  7:44

• Single Assertions Make For Better Tests

  1 objective

• Fixtures

  4:44

• Using Before to not repeat yourself

  1 objective

What to Test

Determining what to test is part of the great art of testing. Let's explore the boundaries and responsibilities of your tests.

Chevron 10 steps

• The Happy Path and Beyond

  7:40

• Exceptions

  6:53

• Happy Path Exception

  1 objective

• Know Your Bounds

  12:41

• Rules rule!

  1 objective

• Ruler of rules

  1 objective

• What Not To Test

  9:37

• To Test or Not To Test

  4 questions

• @AfterClass

  1:46

• Test the running total

  1 objective