Learn Java Unit Testing with JUnit 5 in 20 Steps - Step 09 - Tip - Testing Exceptions with Junit

The video tutorial covers testing exceptions in JUnit, focusing on how to handle NullPointerExceptions. It explains the transition from JUnit 4 to JUnit 5, highlighting the removal of the 'expected' annotation and the introduction of functional programming techniques. The tutorial demonstrates using lambda expressions to test exceptions and discusses the importance of handling test failures when exceptions are not thrown as expected.

Explain how to use a Lambda expression to test for exceptions in JUnit 5.

What happens if the code you expect to throw an exception does not do so?

How can you write multiple lines of code inside a Lambda expression for exception testing?