But writing negative (or failure) test cases ... of Java 8 or later, so that you’ll be able to use Java 8 features like lambdas. You’ve seen how to write and run a basic JUnit 5 unit test ...

To write a test using JUnit, extend the junit.framework.TestCase class. Your subclass of TestCase should simply invoke the test cases ... of several Java books, including one called Core Java Tools ...

There's a case ... testing frameworks [like TestNG], and the other was the new features in Java 5." Kent and Erich asked themselves, how could they make a framework that's even simpler than JUnit ...