Learn Java Unit Testing with JUnit 5 in 20 Steps - Step 17 - Tip - Grouping Tests with @Nested

The video tutorial explains how to group tests using nested annotations in JUnit 5. It begins by introducing the concept of grouping tests related to specific features, such as empty and large strings. The tutorial then demonstrates how to create nested classes and use annotations like @BeforeEach to set up test conditions. It also covers running tests and enhancing readability with display names. The video concludes by highlighting the benefits of using nested annotations for better test organization and problem identification.

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