| // Copyright (c) 2018, 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.naming; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isRenamed; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.OutputMode; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.ToolHelper.ProcessResult; |
| import com.android.tools.r8.VmTestRunner; |
| import com.android.tools.r8.utils.AndroidApp; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import com.google.common.collect.ImmutableList; |
| import java.nio.file.Path; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| interface SuperInterface { |
| Super foo(); |
| } |
| |
| interface SubInterface extends SuperInterface { |
| @Override |
| Sub foo(); |
| } |
| |
| class Super { |
| protected int bar() { |
| return 0; |
| } |
| } |
| |
| class Sub extends Super { |
| @Override |
| protected int bar() { |
| return 1; |
| } |
| } |
| |
| class SuperImplementer implements SuperInterface { |
| @Override |
| public Super foo() { |
| return new Sub(); |
| } |
| } |
| |
| class SubImplementer extends SuperImplementer implements SubInterface { |
| @Override |
| public Sub foo() { |
| return (Sub) super.foo(); |
| } |
| } |
| |
| class TestMain { |
| public static void main(String[] args) { |
| SubImplementer subImplementer = new SubImplementer(); |
| Super sup = subImplementer.foo(); |
| System.out.print(sup.bar()); |
| } |
| } |
| |
| @RunWith(VmTestRunner.class) |
| public class CovariantReturnTypeInSubInterfaceTest extends TestBase { |
| |
| private void test(boolean overloadAggressively) throws Exception { |
| String mainName = TestMain.class.getCanonicalName(); |
| String aggressive = |
| overloadAggressively ? "-overloadaggressively" : "# Not overload aggressively"; |
| List<String> config = ImmutableList.of( |
| "-printmapping", |
| aggressive, |
| "-keep class " + mainName + " {", |
| " public void main(...);", |
| "}", |
| "-keep,allowobfuscation class **.Super* {", |
| " <methods>;", |
| "}", |
| "-keep,allowobfuscation class **.Sub* {", |
| " <methods>;", |
| "}" |
| ); |
| AndroidApp app = readClasses( |
| SuperInterface.class, |
| SubInterface.class, |
| Super.class, |
| Sub.class, |
| SuperImplementer.class, |
| SubImplementer.class, |
| TestMain.class |
| ); |
| AndroidApp processedApp = |
| compileWithR8(app, String.join(System.lineSeparator(), config), options -> { |
| options.enableInlining = false; |
| }); |
| CodeInspector inspector = new CodeInspector(processedApp); |
| ClassSubject superInterface = inspector.clazz(SuperInterface.class); |
| assertThat(superInterface, isRenamed()); |
| MethodSubject foo1 = superInterface.method( |
| Super.class.getCanonicalName(), "foo", ImmutableList.of()); |
| assertThat(foo1, isRenamed()); |
| ClassSubject subInterface = inspector.clazz(SubInterface.class); |
| assertThat(subInterface, isRenamed()); |
| MethodSubject foo2 = subInterface.method( |
| Sub.class.getCanonicalName(), "foo", ImmutableList.of()); |
| assertThat(foo2, isRenamed()); |
| assertEquals(foo1.getFinalName(), foo2.getFinalName()); |
| |
| ProcessResult javaResult = ToolHelper.runJava(ToolHelper.getClassPathForTests(), mainName); |
| assertEquals(0, javaResult.exitCode); |
| Path outDex = temp.getRoot().toPath().resolve("dex.zip"); |
| processedApp.writeToZip(outDex, OutputMode.DexIndexed); |
| ProcessResult artResult = ToolHelper.runArtNoVerificationErrorsRaw(outDex.toString(), mainName); |
| assertEquals(0, artResult.exitCode); |
| assertEquals(javaResult.stdout, artResult.stdout); |
| } |
| |
| @Test |
| public void test_notAggressively() throws Exception { |
| test(false); |
| } |
| |
| @Test |
| public void test_aggressively() throws Exception { |
| test(true); |
| } |
| |
| } |