junit5 - Read For Learn

Eclipse No tests found using JUnit 5 caused by NoClassDefFoundError for LauncherFactory

You ran into Eclipse bug 525948 which has already been fixed and which will be published in the upcoming release Oxygen.3 (4.7.3), March 21, 2018. As workaround, put your test code in a separate project and add the project under test to the modulepath, but do not add a module-info.java to your test project. With your project, class and module naming, … Read more

JUnit 5: How to assert an exception is thrown?

You can use assertThrows(), which allows you to test multiple exceptions within the same test. With support for lambdas in Java 8, this is the canonical way to test for exceptions in JUnit. Per the JUnit docs: