| // Copyright (c) 2021, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.classmerging.horizontal.interfaces; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isImplementing; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertFalse; |
| |
| import com.android.tools.r8.NoHorizontalClassMerging; |
| import com.android.tools.r8.NoUnusedInterfaceRemoval; |
| import com.android.tools.r8.NoVerticalClassMerging; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.HorizontallyMergedClassesInspector; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class ClassHierarchyCycleAfterMergingTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public ClassHierarchyCycleAfterMergingTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| // I and J are not eligible for merging since that would lead to a cycle in the class |
| // hierarchy. |
| .addHorizontallyMergedClassesInspector( |
| HorizontallyMergedClassesInspector::assertNoClassesMerged) |
| .enableNoHorizontalClassMergingAnnotations() |
| .enableNoUnusedInterfaceRemovalAnnotations() |
| .enableNoVerticalClassMergingAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect( |
| inspector -> { |
| ClassSubject mainClassSubject = inspector.clazz(Main.class); |
| assertThat(mainClassSubject, isPresent()); |
| assertThat(mainClassSubject, isImplementing(inspector.clazz(K.class))); |
| }) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithEmptyOutput(); |
| } |
| |
| static class Main implements K { |
| |
| public static void main(String[] args) {} |
| } |
| |
| @NoUnusedInterfaceRemoval |
| @NoVerticalClassMerging |
| interface I {} |
| |
| @NoHorizontalClassMerging |
| @NoUnusedInterfaceRemoval |
| @NoVerticalClassMerging |
| interface J extends I {} |
| |
| @NoUnusedInterfaceRemoval |
| @NoVerticalClassMerging |
| interface K extends J {} |
| } |