| // Copyright (c) 2019, 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.ir.optimize.unusedinterfaces; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| 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.CodeInspector; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class UnusedInterfaceWithDefaultMethodTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public UnusedInterfaceWithDefaultMethodTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(UnusedInterfaceWithDefaultMethodTest.class) |
| .addKeepMainRule(TestClass.class) |
| .enableInliningAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .enableNoVerticalClassMergingAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("J.m()"); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject iClassSubject = inspector.clazz(I.class); |
| assertThat(iClassSubject, isPresent()); |
| |
| ClassSubject jClassSubject = inspector.clazz(J.class); |
| assertThat(jClassSubject, isPresent()); |
| |
| ClassSubject aClassSubject = inspector.clazz(A.class); |
| assertThat(aClassSubject, isPresent()); |
| |
| // Verify that J is not considered an unused interface, since it provides an implementation of |
| // m() that happens to be used. |
| assertEquals(1, aClassSubject.getDexProgramClass().interfaces.size()); |
| assertEquals( |
| jClassSubject.getDexProgramClass().type, |
| aClassSubject.getDexProgramClass().interfaces.values[0]); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| indirection(new A()); |
| } |
| |
| @NeverInline |
| private static void indirection(I obj) { |
| obj.m(); |
| } |
| } |
| |
| @NoVerticalClassMerging |
| interface I { |
| |
| void m(); |
| } |
| |
| @NoVerticalClassMerging |
| interface J extends I { |
| |
| @NeverInline |
| @Override |
| default void m() { |
| System.out.println("J.m()"); |
| } |
| } |
| |
| @NeverClassInline |
| static class A implements J {} |
| } |