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.functional.componentdependency;
18 
19 import static com.google.common.truth.Truth.assertThat;
20 
21 import dagger.Component;
22 import org.junit.Test;
23 import org.junit.runner.RunWith;
24 import org.junit.runners.JUnit4;
25 
26 /**
27  * Tests component dependencies.
28  */
29 @RunWith(JUnit4.class)
30 public final class ComponentDependenciesTest {
31   public interface One {
getString()32     String getString();
33   }
34 
35   public interface Two {
getString()36     String getString();
37   }
38 
39   public interface Merged extends One, Two {
40   }
41 
42   @Component(dependencies = Merged.class)
43   interface TestComponent {
getString()44     String getString();
45 
46     @Component.Builder
47     interface Builder {
dep(Merged dep)48       Builder dep(Merged dep);
49 
build()50       TestComponent build();
51     }
52   }
53 
54   @Test
testSameMethodTwice()55   public void testSameMethodTwice() throws Exception {
56     TestComponent component =
57         DaggerComponentDependenciesTest_TestComponent.builder().dep(() -> "test").build();
58     assertThat(component.getString()).isEqualTo("test");
59   }
60 
61   public interface OneOverride {
getString()62     Object getString();
63   }
64 
65   public interface TwoOverride {
getString()66     Object getString();
67   }
68 
69   public interface MergedOverride extends OneOverride, TwoOverride {
70     @Override
getString()71     String getString();
72   }
73 
74   @Component(dependencies = MergedOverride.class)
75   interface TestOverrideComponent {
getString()76     String getString();
77 
78     @Component.Builder
79     interface Builder {
dep(MergedOverride dep)80       Builder dep(MergedOverride dep);
81 
build()82       TestOverrideComponent build();
83     }
84   }
85 
86   @Test
testPolymorphicOverridesStillCompiles()87   public void testPolymorphicOverridesStillCompiles() throws Exception {
88     TestOverrideComponent component =
89         DaggerComponentDependenciesTest_TestOverrideComponent.builder().dep(() -> "test").build();
90     assertThat(component.getString()).isEqualTo("test");
91   }
92 }
93