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

### assertThrows() method ###

Assertions API provide static `assertThrows()` method. This method helps in asserting that execution of the supplied `Executable` throws an exception of the `expectedType` and returns the exception. 

- If no exception is thrown, or if an exception of a different type is thrown, this method will fail.
- It follows the inheritance hierarchy, so the assert will pass if the expected type is `Exception` and actual is `RuntimeException`.


There are basically three useful overloaded methods for assertThrows:-

# assertThrows() method ###

Assertions API provide static `assertThrows()` method. This method helps in asserting that execution of the supplied `Executable` throws an exception of the `expectedType` and returns the exception. 

- If no exception is thrown, or if an exception of a different type is thrown, this method will fail.
- It follows the inheritance hierarchy, so the assert will pass if the expected type is `Exception` and actual is `RuntimeException`.


There are basically three useful overloaded methods for assertThrows:-

This lesson demonstrates how to use assertThrows method in JUnit 5 to assert test conditions. 

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

assertThrows() method

assertThrows() method