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Mock objects library for java

There is a newer version: 2.0.2-beta

/*
 * Copyright (c) 2007 Mockito contributors
 * This program is made available under the terms of the MIT License.
 */
package org.mockito;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Mark a field as a mock.
 *
 * 
 * Allows shorthand mock creation.
 * Minimizes repetitive mock creation code.
 * Makes the test class more readable.
 * Makes the verification error easier to read because the field name is used to identify the mock.
 * 
 *
 * 
 *   public class ArticleManagerTest extends SampleBaseTestCase {
 *
 *       @Mock private ArticleCalculator calculator;
 *       @Mock(name = "database") private ArticleDatabase dbMock;
 *       @Mock(answer = RETURNS_MOCKS) private UserProvider userProvider;
 *       @Mock(extraInterfaces = {Queue.class, Observer.class}) private  articleMonitor;
 *
 *       private ArticleManager manager;
 *
 *       @Before public void setup() {
 *           manager = new ArticleManager(userProvider, database, calculator, articleMonitor);
 *       }
 *   }
 *
 *   public class SampleBaseTestCase {
 *
 *       @Before public void initMocks() {
 *           MockitoAnnotations.initMocks(this);
 *       }
 *   }
 * 
 *
 * 
 * MockitoAnnotations.initMocks(this) method has to be called to initialize annotated objects.
 * In above example, initMocks() is called in @Before (JUnit4) method of test's base class.
 * For JUnit3 initMocks() can go to setup() method of a base class.
 * Instead you can also put initMocks() in your JUnit runner (@RunWith) or use the built-in
 * {@link org.mockito.runners.MockitoJUnitRunner}.
 * 
 *
 * @see Mockito#mock(Class)
 * @see Spy
 * @see InjectMocks
 * @see MockitoAnnotations#initMocks(Object)
 * @see org.mockito.runners.MockitoJUnitRunner
 */
@Target(FIELD)
@Retention(RUNTIME)
@Documented
public @interface Mock {

    Answers answer() default Answers.RETURNS_DEFAULTS;

    String name() default "";

    Class[] extraInterfaces() default {};
}