xref: /aosp_15_r20/external/dagger2/java/dagger/hilt/android/testing/BindValueIntoMap.java (revision f585d8a307d0621d6060bd7e80091fdcbf94fe27)
1 /*
2  * Copyright (C) 2020 The Dagger Authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package dagger.hilt.android.testing;
18 
19 import static java.lang.annotation.RetentionPolicy.CLASS;
20 
21 import dagger.hilt.GeneratesRootInput;
22 import java.lang.annotation.ElementType;
23 import java.lang.annotation.Retention;
24 import java.lang.annotation.Target;
25 
26 /**
27  * An annotation that can be used on a test field to contribute the value into the {@link
28  * dagger.hilt.components.SingletonComponent} as an {@link dagger.multibindings.IntoMap}
29  * for the given type. Example usage:
30  *
31  * <pre><code>
32  * public class FooTest{
33  *   ...
34  *   {@literal @}BindValueIntoMap
35  *   {@literal @}MyMapKey(KEY1)
36  *   String boundBar = "bar";
37  *
38  *   {@literal @}BindValueIntoMap
39  *   {@literal @}MyMapKey(KEY2)
40  *   String boundBaz = "baz";
41  *   ...
42  * }
43  * </code></pre>
44  *
45  * Here the map that contains all the bound elements (in this case "bar" and "baz") will be
46  * accessible to the entire application for your test.
47  */
48 @Retention(CLASS)
49 @Target({ElementType.FIELD})
50 @GeneratesRootInput
51 public @interface BindValueIntoMap {}
52