Test (JUnit API)
Keywords: org.junit.Test class

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## org.junit
Annotation Type Test

    @Retention(value=RUNTIME)
    @Target(value=METHOD)
    public @interface Test

The `Test` annotation tells JUnit that the `public void` method to which it is attached can be run as a test case. To run the method, JUnit first constructs a fresh instance of the class then invokes the annotated method. Any exceptions thrown by the test will be reported by JUnit as a failure. If no exceptions are thrown, the test is assumed to have succeeded.

A simple test looks like this:

     public class Example {
        @Test
        public void method() {
           org.junit.Assert.assertTrue( new ArrayList().isEmpty() );
        }
     }

The `Test` annotation supports two optional parameters. The first, `expected`, declares that a test method should throw an exception. If it doesn't throw an exception or if it throws a different exception than the one declared, the test fails. For example, the following test succeeds:

        @Test(expected=IndexOutOfBoundsException.class) public void outOfBounds() {
           new ArrayList<Object>().get(1);
        }

The second optional parameter, `timeout`, causes a test to fail if it takes longer than a specified amount of clock time (measured in milliseconds). The following test fails:

        @Test(timeout=100) public void infinity() {
           while(true);
        }

Optional Element Summary
`Class<? extends Throwable>` | `expected` Optionally specify `expected`, a Throwable, to cause a test method to succeed iff an exception of the specified class is thrown by the method.
`long` | `timeout` Optionally specify `timeout` in milliseconds to cause a test method to fail if it takes longer than that number of milliseconds.

### expected

    public abstract Class<? extends Throwable> expected

  Optionally specify `expected`, a Throwable, to cause a test method to succeed iff an exception of the specified class is thrown by the method.

  Default:
    org.junit.Test.None.class

### timeout

    public abstract long timeout

  Optionally specify `timeout` in milliseconds to cause a test method to fail if it takes longer than that number of milliseconds.

  Default:
    0L

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