| // Copyright (c) 2020, 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.shaking; |
| |
| import static com.google.common.base.Predicates.alwaysTrue; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.NeverMerge; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.graph.DexEncodedMethod; |
| import com.android.tools.r8.graph.DexItemFactory; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.graph.DexType; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class LibraryMethodOverrideMarkingTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public LibraryMethodOverrideMarkingTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(LibraryMethodOverrideMarkingTest.class) |
| .addKeepMainRule(TestClass.class) |
| .addOptionsModification( |
| options -> options.testing.enqueuerInspector = this::verifyLibraryOverrideInformation) |
| .enableMergeAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile(); |
| } |
| |
| private void verifyLibraryOverrideInformation(AppInfoWithLiveness appInfo, Enqueuer.Mode mode) { |
| DexItemFactory dexItemFactory = appInfo.dexItemFactory(); |
| verifySingleVirtualMethodMarkedAsOverridingLibraryMethod( |
| appInfo, dexItemFactory.createType(descriptor(A.class))); |
| verifySingleVirtualMethodMarkedAsOverridingLibraryMethod( |
| appInfo, dexItemFactory.createType(descriptor(B.class))); |
| } |
| |
| private void verifySingleVirtualMethodMarkedAsOverridingLibraryMethod( |
| AppInfoWithLiveness appInfo, DexType type) { |
| DexProgramClass clazz = appInfo.definitionFor(type).asProgramClass(); |
| assertEquals(1, clazz.getMethodCollection().numberOfVirtualMethods()); |
| DexEncodedMethod method = clazz.lookupVirtualMethod(alwaysTrue()); |
| assertTrue(method.isLibraryMethodOverride().isTrue()); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| System.out.println(new C()); |
| } |
| } |
| |
| @NeverMerge |
| static class A { |
| |
| @Override |
| public String toString() { |
| return super.toString(); |
| } |
| } |
| |
| @NeverMerge |
| static class B extends A { |
| |
| @Override |
| public String toString() { |
| return super.toString(); |
| } |
| } |
| |
| static class C extends B {} |
| } |