Testing Java in Visual Studio Code is enabled by the Java Test Runner extension. It's a lightweight extension to run and debug Java test cases. The extension supports the following test frameworks:

• JUnit 4 (v4.8.0+)
• JUnit 5 (v5.1.0+)
• TestNG (v6.8.0+)

The Java Test Runner works with the Language Support for Java by Red Hat and Debugger for Java extensions to provide the following features:

• Run test cases
• Debug test cases
• View test report
• View tests in Test Explorer

Here's a brief session with TestNG:

And with JUnit5:

The JUnit 5 support also covers frequently used annotations such as @DisplayName and @ParameterizedTest

Visit the GitHub repository of the Java Test Runner for more details on commands and settings.

Read on to find out about:

• Debugging - Find out how to debug your Java project with VS Code.
• Java Extensions - Learn about more useful Java extensions for VS Code.