1 /*
2  * Copyright (C) 2022 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.kotlinsrc.builder
18 
19 import com.google.common.truth.Truth.assertThat
20 import dagger.Component
21 import org.junit.Test
22 import org.junit.runner.RunWith
23 import org.junit.runners.JUnit4
24 
25 @RunWith(JUnit4::class)
26 class BuildMethodCovariantReturnInheritedTest {
27   @Component
28   internal interface Simple {
29     interface BuilderSupertype {
buildnull30       fun build(): Any
31     }
32 
33     @Component.Builder interface Builder : BuilderSupertype
34   }
35 
36   internal interface ComponentSupertype
37 
38   @Component
39   internal interface GenericBuilderType : ComponentSupertype {
40     interface GenericBuilderSupertype<T> {
41       fun build(): T
42     }
43 
44     @Component.Builder interface Builder : GenericBuilderSupertype<ComponentSupertype>
45   }
46 
47   internal interface ParameterizedComponentSupertype<T>
48 
49   @Component
50   internal interface GenericComponentSupertypeAndBuilderSupertype :
51     ParameterizedComponentSupertype<Any> {
52 
53     interface GenericBuilderSupertype<T> {
buildnull54       fun build(): ParameterizedComponentSupertype<T>
55     }
56 
57     @Component.Builder interface Builder : GenericBuilderSupertype<Any>
58   }
59 
60   @Test
61   fun simpleComponentTest() {
62     val component = DaggerBuildMethodCovariantReturnInheritedTest_Simple.builder().build()
63     assertThat(component).isInstanceOf(Simple::class.java)
64   }
65 
66   @Test
genericBuilderTypeTestnull67   fun genericBuilderTypeTest() {
68     val component =
69         DaggerBuildMethodCovariantReturnInheritedTest_GenericBuilderType.builder().build()
70     assertThat(component).isInstanceOf(GenericBuilderType::class.java)
71   }
72 
73   @Test
genericComponentSupertypeAndBuilderSupertypeTestnull74   fun genericComponentSupertypeAndBuilderSupertypeTest() {
75     val component =
76         DaggerBuildMethodCovariantReturnInheritedTest_GenericComponentSupertypeAndBuilderSupertype
77             .builder()
78             .build()
79     assertThat(component).isInstanceOf(GenericComponentSupertypeAndBuilderSupertype::class.java)
80   }
81 }
82