android13/external/dagger2/javatests/dagger/functional/subcomponent/pruning/SubcomponentOnlyRequestedBy...

50 lines
2.0 KiB
Java

/*
* Copyright (C) 2016 The Dagger Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dagger.functional.subcomponent.pruning;
import static com.google.common.truth.Truth.assertThat;
import dagger.Module;
import dagger.Subcomponent;
import dagger.functional.subcomponent.pruning.ParentDoesntUseSubcomponent.ChildA;
import dagger.functional.subcomponent.pruning.ParentDoesntUseSubcomponent.ChildB;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for {@link Subcomponent}s which are included with {@link Module#subcomponents()} but not
* used directly within the component which adds them.
*
* <p>This tests to make sure that while resolving one subcomponent (A), another subcomponent (B)
* can be requested if they have a shared ancestor component. If that shared ancestor did not
* resolve B directly via any of its entry points, B will still be generated since it is requested
* by a descendant.
*/
@RunWith(JUnit4.class)
public class SubcomponentOnlyRequestedBySiblingTest {
@Test
public void subcomponentAddedInParent_onlyUsedInSibling() {
ParentDoesntUseSubcomponent parent = DaggerParentDoesntUseSubcomponent.create();
ChildB childB = parent.childBBuilder().build();
assertThat(childB.componentHierarchy())
.containsExactly(ParentDoesntUseSubcomponent.class, ChildB.class);
assertThat(childB.componentHierarchyFromChildA())
.containsExactly(ParentDoesntUseSubcomponent.class, ChildA.class);
}
}