Working with the JUnit framework
JUnit is the most popular unit testing framework for Java. It offers a metadata-based, non-invasive, and elegant unit testing framework for the Java community. Apparently, TestNG has cleaner syntax and usage than JUnit, but JUnit is far more popular than TestNG. JUnit enjoys better mocking support such as from Mockito, which offers a custom JUnit4 runner.
Version 4.12 is the latest JUnit framework version that can be downloaded from https://github.com/junit-team/junit/wiki/Download-and-Install.
JUnit 4 is a metadata-based (annotation), non-invasive (JUnit tests do not need to inherit from a framework class) framework. The JUnit framework provides APIs to write test cases to verify the individual functional flows, ...
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