1 /*
2  * Copyright (C) 2023 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.subcomponent.pruning
18 
19 import com.google.common.truth.Truth.assertThat
20 import dagger.Subcomponent
21 import dagger.functional.kotlinsrc.subcomponent.pruning.ParentDoesntUseSubcomponent.ChildA
22 import dagger.functional.kotlinsrc.subcomponent.pruning.ParentDoesntUseSubcomponent.ChildB
23 import org.junit.Test
24 import org.junit.runner.RunWith
25 import org.junit.runners.JUnit4
26 
27 /**
28  * Tests for [Subcomponent]s which are included with [Module.subcomponents] but not used directly
29  * within the component which adds them.
30  *
31  * This tests to make sure that while resolving one subcomponent (A), another subcomponent (B) can
32  * be requested if they have a shared ancestor component. If that shared ancestor did not resolve B
33  * directly via any of its entry points, B will still be generated since it is requested by a
34  * descendant.
35  */
36 @RunWith(JUnit4::class)
37 class SubcomponentOnlyRequestedBySiblingTest {
38   @Test
subcomponentAddedInParent_onlyUsedInSiblingnull39   fun subcomponentAddedInParent_onlyUsedInSibling() {
40     val parent = DaggerParentDoesntUseSubcomponent.create()
41     val childB = parent.childBBuilder().build()
42     assertThat(childB.componentHierarchy())
43       .containsExactly(ParentDoesntUseSubcomponent::class.java, ChildB::class.java)
44     assertThat(childB.componentHierarchyFromChildA())
45       .containsExactly(ParentDoesntUseSubcomponent::class.java, ChildA::class.java)
46   }
47 }
48