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The sample plugin contains the TestThisPlugin Java class in the testSource/testPlugin package and the test data in the <plugin directory>/testData directory.
The This test program covers adds two test cases to this plugin project. To perform the plugin run test cases, run the YourTest.test() or YourTest.test1() method, respectively.
For detailed information about testing and all related procedures, refer to Testing and Testing Support in the IntelliJ IDEA Web Help.