Gain insights into configuring and utilizing JUnit 5 for Java unit testing. Learn about writing effective unit tests, integrating assertions, assumptions, parameterized tests, and their significance.

Junit 5 is the most popular and widely used Java unit testing framework. In this course, you will learn step by step, how to configure and use JUnit 5 testing framework. This course will teach you how to write unit tests with JUnit 5, covering topics like why unit tests are important, the structure of good unit tests, assertions, assumptions and parameterized tests and more.

Java Unit Testing with JUnit 5

### @ValueSource ###

`@ValueSource` is one of the simplest ways to pass arguments array to `@ParameterizedTest` method. This array can be of following types - 

1. short
2. byte
3. int
4. long
5. float
6. double
7. char
8. java.lang.String
9. java.lang.Class

Let's look into a demo.

**Step 1** - Let's create a class `OddEven.java`, it is our class under test.

**Step 2** - To this class we provide a method by name `isNumberEven()`. This method takes in an integer value and returns true if the number is even or false if the number is odd.

# @ValueSource ###

`@ValueSource` is one of the simplest ways to pass arguments array to `@ParameterizedTest` method. This array can be of following types - 

1. short
2. byte
3. int
4. long
5. float
6. double
7. char
8. java.lang.String
9. java.lang.Class

Let's look into a demo.

**Step 1** - Let's create a class `OddEven.java`, it is our class under test.

**Step 2** - To this class we provide a method by name `isNumberEven()`. This method takes in an integer value and returns true if the number is even or false if the number is odd.

This lesson demonstrates use of @ValueSource to pass different arguments to @ParameterizedTest.

Getting Started

Assertions in Junit 5

Junit 5 Test Lifecycle Callbacks

Display Names

Dependency Injection for Constructors and Methods

Assumptions in Junit 5

Disable or Enable Tests in Junit 5

Nested Tests in Junit 5

JUnit 5 Integration with Maven

Parameterized Tests in Junit 5

Repeated Tests in Junit 5

Appendix

Parameterized Test with @ValueSource

@ValueSource