Java 9 Programming By Example

Writing the BubbleSortTest class

The test classes are separated from the production classes. They go into the src/test/java directory. When we have a class named, for example, BubbleSort, then the test will be named BubbleSortTest. This convention helps the executing environment to separate the tests from those classes that do not contain tests but are needed to execute the tests. To test the sort implementation we have just created, we can furnish a class that contains, for now, a single canSortStrings method.

Unit test method names are used to document the functionality being tested. As the JUnit framework invokes each and every method that has the @Test annotation, the name of the test is not referenced anywhere in our code. We can bravely ...