JUnit 5 Nested Tests Example

By | October 3, 2020

The @Nested tests give the test developer more capabilities to express the relationship among several groups of tests.

Only non-static nested classes (i.e. inner classes) can serve as @Nested test classes.

Nesting can be arbitrarily deep and these inner classes are considered to be full members of the test class family with one exception: @BeforeAll and @AfterAll methods do not work by default. The main reason is that Java does not allow static members in inner classes.

However, this restriction can be circumvented by annotating a @Nested test class with @TestInstance(Lifecycle.PER_CLASS)




The output of the above project:



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