What are JUnit custom runners and how do I use them?
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What are JUnit custom runners and how do I use them?
JUnit custom runners allow you to define custom test execution behavior in JUnit tests. You can create a runner by extending the Runner class.
Can you give me an example of a custom runner?
Sure! Here's a simple example: you can create a runner that logs the start and end of each test. Just extend the BlockJUnit4ClassRunner and override the runChild method.
How do I annotate my test class to use this custom runner?
You can annotate your test class with @RunWith(YourCustomRunner.class) to specify that it should use your custom runner.
Are there any built-in runners I should know about?
Yes, JUnit provides several built-in runners like BlockJUnit4ClassRunner, Parameterized, and Suite that you can use for various testing scenarios.
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