package org.junit;

import java.lang.annotation.ElementType;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target;

/**

 * <p>Sometimes several tests need to share computationally expensive setup

 * (like logging into a database). While this can compromise the independence of 

 * tests, sometimes it is a necessary optimization. Annotating a <code>public static void</code> no-arg method

 * with <code>@BeforeClass</code> causes it to be run once before any of 

 * the test methods in the class. The <code>@BeforeClass</code> methods of superclasses

 * will be run before those the current class.</p>

 * 

 * For example:

 * <pre>

 * public class Example {

 *    @BeforeClass public static void onlyOnce() {

 *       ...

 *    }

 *    @Test public void one() {

 *       ...

 *    }

 *    @Test public void two() {

 *       ...

 *    }

 * }

 * </pre>

 * @see org.junit.AfterClass

 */

@Retention(RetentionPolicy.RUNTIME)

@Target(ElementType.METHOD)

public @interface BeforeClass {

}