package org.junit.runner;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* When a class is annotated with <code>@RunWith</code> or extends a class annotated
* with <code>@RunWith</code>, JUnit will invoke the class it references to run the
* tests in that class instead of the runner built into JUnit. We added this feature late
* in development. While it seems powerful we expect the runner API to change as we learn
* how people really use it. Some of the classes that are currently internal will likely
* be refined and become public.
*
* For example, suites in JUnit 4 are built using RunWith, and a custom runner named Suite:
*
* <pre>
* @RunWith(Suite.class)
* @SuiteClasses({ATest.class, BTest.class, CTest.class})
* public class ABCSuite {
* }
* </pre>
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Inherited
public @interface RunWith {
/**
* @return a Runner class (must have a constructor that takes a single Class to run)
*/
Class<? extends Runner> value();
}
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