| // 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.desugaring.lambdanames; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestRunResult; |
| import com.android.tools.r8.transformers.ClassFileTransformer; |
| import com.android.tools.r8.utils.BooleanUtils; |
| import com.android.tools.r8.utils.DescriptorUtils; |
| import com.android.tools.r8.utils.StringUtils; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class PackageDependentLambdaNamesTest extends TestBase { |
| |
| static final String EXPECTED = StringUtils.lines("Hello, world"); |
| |
| private final TestParameters parameters; |
| private final boolean samePackage; |
| |
| @Parameterized.Parameters(name = "{0}, same-pkg:{1}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| getTestParameters().withAllRuntimes().withAllApiLevels().build(), BooleanUtils.values()); |
| } |
| |
| public PackageDependentLambdaNamesTest(TestParameters parameters, boolean samePackage) { |
| this.parameters = parameters; |
| this.samePackage = samePackage; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| TestRunResult<?> result = |
| testForRuntime(parameters) |
| .addProgramClasses(StringConsumer.class) |
| .addProgramClassFileData(getTestClass(), getA(), getB()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED); |
| if (parameters.isDexRuntime()) { |
| result.inspect( |
| inspector -> { |
| // When in the same package we expect the two System.out::print lambdas to be shared. |
| assertEquals( |
| samePackage ? 2 : 3, |
| inspector.allClasses().stream() |
| .filter(c -> c.isSynthesizedJavaLambdaClass()) |
| .count()); |
| }); |
| } |
| } |
| |
| private byte[] getA() throws Exception { |
| ClassFileTransformer transformer = transformer(A.class); |
| if (!samePackage) { |
| transformer.setClassDescriptor("La/A;"); |
| } |
| return transformer.transform(); |
| } |
| |
| private byte[] getB() throws Exception { |
| ClassFileTransformer transformer = transformer(B.class); |
| if (!samePackage) { |
| transformer.setClassDescriptor("Lb/B;"); |
| } |
| return transformer.transform(); |
| } |
| |
| private byte[] getTestClass() throws Exception { |
| ClassFileTransformer transformer = transformer(TestClass.class); |
| if (!samePackage) { |
| transformer |
| .replaceClassDescriptorInMethodInstructions( |
| DescriptorUtils.javaTypeToDescriptor(A.class.getTypeName()), "La/A;") |
| .replaceClassDescriptorInMethodInstructions( |
| DescriptorUtils.javaTypeToDescriptor(B.class.getTypeName()), "Lb/B;"); |
| } |
| return transformer.transform(); |
| } |
| |
| @FunctionalInterface |
| public interface StringConsumer { |
| void accept(String arg); |
| } |
| |
| public static class A { |
| public void hello() { |
| TestClass.apply(System.out::print, "Hello, "); |
| } |
| } |
| |
| public static class B { |
| public void world() { |
| TestClass.apply(System.out::print, "world"); |
| } |
| } |
| |
| public static class TestClass { |
| |
| public static void apply(StringConsumer consumer, String arg) { |
| consumer.accept(arg); |
| } |
| |
| public static void main(String[] args) { |
| new A().hello(); |
| new B().world(); |
| apply(System.out::println, ""); |
| } |
| } |
| } |