1 /*
2  * Copyright (C) 2019 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.functional.factory;
18 
19 import static com.google.common.truth.Truth.assertThat;
20 import static java.lang.annotation.ElementType.METHOD;
21 import static java.lang.annotation.ElementType.PARAMETER;
22 import static java.lang.annotation.RetentionPolicy.RUNTIME;
23 import static org.junit.Assert.fail;
24 
25 import dagger.BindsInstance;
26 import dagger.Component;
27 import java.lang.annotation.Retention;
28 import java.lang.annotation.Target;
29 import org.junit.Test;
30 import org.junit.runner.RunWith;
31 import org.junit.runners.JUnit4;
32 
33 /** Tests for component factories with {@link BindsInstance} parameters. */
34 @RunWith(JUnit4.class)
35 public final class FactoryBindsInstanceTest {
36 
37   @Component
38   interface BindsInstanceComponent {
string()39     String string();
40 
41     @Component.Factory
42     interface Factory {
create(@indsInstance String string)43       BindsInstanceComponent create(@BindsInstance String string);
44     }
45   }
46 
47   @Test
bindsInstance()48   public void bindsInstance() {
49     BindsInstanceComponent component =
50         DaggerFactoryBindsInstanceTest_BindsInstanceComponent.factory().create("baz");
51     assertThat(component.string()).isEqualTo("baz");
52   }
53 
54   @Test
nonNullableBindsInstance_failsOnNull()55   public void nonNullableBindsInstance_failsOnNull() {
56     try {
57       DaggerFactoryBindsInstanceTest_BindsInstanceComponent.factory().create(null);
58       fail();
59     } catch (NullPointerException expected) {
60     }
61   }
62 
63   @Target({METHOD, PARAMETER})
64   @Retention(RUNTIME)
65   @interface Nullable {}
66 
67   @Component
68   interface NullableBindsInstanceComponent {
69     @Nullable
string()70     String string();
71 
72     @Component.Factory
73     interface Factory {
create(@indsInstance @ullable String string)74       NullableBindsInstanceComponent create(@BindsInstance @Nullable String string);
75     }
76   }
77 
78   @Test
nullableBindsInstance_doesNotFailOnNull()79   public void nullableBindsInstance_doesNotFailOnNull() {
80     NullableBindsInstanceComponent component =
81         DaggerFactoryBindsInstanceTest_NullableBindsInstanceComponent.factory().create(null);
82     assertThat(component.string()).isEqualTo(null);
83   }
84 
85   @Component
86   interface PrimitiveBindsInstanceComponent {
getInt()87     int getInt();
88 
89     @Component.Factory
90     interface Factory {
create(@indsInstance int i)91       PrimitiveBindsInstanceComponent create(@BindsInstance int i);
92     }
93   }
94 
95   @Test
primitiveBindsInstance()96   public void primitiveBindsInstance() {
97     PrimitiveBindsInstanceComponent component =
98         DaggerFactoryBindsInstanceTest_PrimitiveBindsInstanceComponent.factory().create(1);
99     assertThat(component.getInt()).isEqualTo(1);
100   }
101 }
102