1 /*
2  * Copyright (c) 2016 Mockito contributors
3  * This program is made available under the terms of the MIT License.
4  */
5 package org.mockito.stubbing;
6 
7 import org.mockito.Incubating;
8 
9 /**
10  * Generic interface to be used for configuring mock's answer for a four argument invocation.
11  *
12  * Answer specifies an action that is executed and a return value that is returned when you interact with the mock.
13  * <p>
14  * Example of stubbing a mock with this custom answer:
15  *
16  * <pre class="code"><code class="java">
17  * when(mock.someMethod(anyInt(), anyString(), anyChar(), any())).thenAnswer(
18  *     new Answer&lt;StringBuilder, Integer, String, Character, Object&gt;() {
19  *         StringBuilder answer(Integer i, String s, Character c, Object o) {
20  *             return new StringBuilder().append(i).append(s).append(c).append(o.hashCode());
21  *         }
22  *     });
23  *
24  * //Following will print a string like "3xyz131635550"
25  * System.out.println(mock.someMethod(3, "xy", 'z', new Object()));
26  * </code></pre>
27  *
28  * @param <T> return type
29  * @param <A0> type of the first argument
30  * @param <A1> type of the second argument
31  * @param <A2> type of the third argument
32  * @param <A3> type of the fourth argument
33  * @see Answer
34  */
35 @Incubating
36 public interface Answer4<T, A0, A1, A2, A3> {
37     /**
38      * @param argument0 the first argument.
39      * @param argument1 the second argument.
40      * @param argument2 the third argument.
41      * @param argument3 the fourth argument.
42      *
43      * @return the value to be returned.
44      *
45      * @throws Throwable the throwable to be thrown
46      */
answer(A0 argument0, A1 argument1, A2 argument2, A3 argument3)47     T answer(A0 argument0, A1 argument1, A2 argument2, A3 argument3) throws Throwable;
48 }
49