Learn Java Unit Testing with JUnit 5 in 20 Steps

Table of Contents

Chapter 1 : JUnit 5

Introduction

Course Overview

Step 01 - Introduction to Unit Testing - Test Pyramid

Step 02 - First Junit Test - Red bar

Step 03 - Absence of failure is success

Step 04 - First Unit Test with JUnit - String length() method

Step 05 - Writing JUnit Assertions - assertNull and assertTrue

Step 06 - Writing Assertions for Arrays - assertArrayEquals

Step 07 - Setting up data for every test - @BeforeEach, @AfterEach

Step 08 - Setting up database connections - @BeforeAll, @AfterAll

Step 09 - Tip - Testing Exceptions with Junit

Step 10 - Tip - @DisplayName and test methods need not be public

Step 11 - Basics of Parameterized tests

Step 12 - Advanced Paramaterized Tests with Csv Source

Step 13 - Tip - Giving a name to a Parameterized Test

Step 14 - Tip - Repeat same test multiple times

Step 15 - Tip - Unit Testing for Performance

Step 16 - Tip - Disable Unit Tests

Step 17 - Tip - Grouping Tests with @Nested

Step 18 - Tip - JUnit 5 = Platform + Jupiter + Vintage

Step 19 - Tip - JUnit 4 vs JUnit 5

Step 20 - Tip - JUnit Best Practices

Step 21 - Tip - JUnit Patterns - xunitpatterns

Chapter 2 : JUnit 4

Step 99 - JUnit 4 Section - First Version of the course

Getting Ready for Hello World

Your First JUnit Success - Green Bar

Refactoring: Improving the Junit

assertTrue and assertFalse

@Before and @After

@BeforeClass and @AfterClass

Comparing Arrays - assertArrayEquals

Unit Testing Exceptions

Unit Testing for Performance

Parameterized JUnit Tests

Organizing Unit Tests into Suites

How do you write good Unit Tests?

Conclusion