| // 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.desugar.desugaredlibrary; |
| |
| import static com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification.D8_L8DEBUG; |
| import static com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification.D8_L8SHRINK; |
| import static com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification.getJdk8Jdk11; |
| import static com.android.tools.r8.ir.desugar.itf.InterfaceDesugaringForTesting.getEmulateLibraryClassNameSuffix; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static junit.framework.TestCase.assertEquals; |
| import static junit.framework.TestCase.assertTrue; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification; |
| import com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification; |
| import com.android.tools.r8.dex.code.DexInstruction; |
| import com.android.tools.r8.graph.DexClass; |
| import com.android.tools.r8.graph.DexEncodedMethod; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.FoundClassSubject; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import com.google.common.collect.ImmutableList; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| import org.junit.Assume; |
| 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 EmulatedInterfacesTest extends DesugaredLibraryTestBase { |
| |
| private final TestParameters parameters; |
| private final CompilationSpecification compilationSpecification; |
| private final LibraryDesugaringSpecification libraryDesugaringSpecification; |
| |
| @Parameters(name = "{0}, spec: {1}, {2}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| getTestParameters().withDexRuntimes().withAllApiLevels().build(), |
| getJdk8Jdk11(), |
| ImmutableList.of(D8_L8DEBUG, D8_L8SHRINK)); |
| } |
| |
| public EmulatedInterfacesTest( |
| TestParameters parameters, |
| LibraryDesugaringSpecification libraryDesugaringSpecification, |
| CompilationSpecification compilationSpecification) { |
| this.parameters = parameters; |
| this.compilationSpecification = compilationSpecification; |
| this.libraryDesugaringSpecification = libraryDesugaringSpecification; |
| } |
| |
| @Test |
| public void testEmulatedInterface() throws Exception { |
| Assume.assumeTrue(libraryDesugaringSpecification.hasEmulatedInterfaceDesugaring(parameters)); |
| CodeInspector inspector = |
| testForL8(parameters.getApiLevel()) |
| .apply( |
| l8Builder -> |
| libraryDesugaringSpecification.configureL8TestBuilder( |
| l8Builder, compilationSpecification.isL8Shrink(), "-keep class **$-EL")) |
| .compile() |
| .inspector(); |
| assertEmulateInterfaceClassesPresentWithDispatchMethods(inspector); |
| assertCollectionMethodsPresentWithCorrectDispatch(inspector); |
| } |
| |
| private void assertEmulateInterfaceClassesPresentWithDispatchMethods(CodeInspector inspector) { |
| List<FoundClassSubject> emulatedInterfaces = getEmulatedInterfaces(inspector); |
| int numDispatchClasses = 9; |
| assertThat(inspector.clazz("j$.util.Map$Entry$-EL"), not(isPresent())); |
| assertEquals(numDispatchClasses, emulatedInterfaces.size()); |
| for (FoundClassSubject clazz : emulatedInterfaces) { |
| assertTrue( |
| clazz.allMethods().stream() |
| .allMatch( |
| method -> |
| method.isStatic() |
| && method |
| .streamInstructions() |
| .anyMatch(InstructionSubject::isInstanceOf))); |
| } |
| } |
| |
| private List<FoundClassSubject> getEmulatedInterfaces(CodeInspector inspector) { |
| return inspector.allClasses().stream() |
| .filter(clazz -> clazz.getOriginalName().contains(getEmulateLibraryClassNameSuffix())) |
| .collect(Collectors.toList()); |
| } |
| |
| private void assertCollectionMethodsPresentWithCorrectDispatch(CodeInspector inspector) { |
| DexClass collectionDispatch = inspector.clazz("j$.util.Collection$-EL").getDexProgramClass(); |
| for (DexEncodedMethod method : collectionDispatch.methods()) { |
| int numCheckCast = |
| (int) |
| Stream.of(method.getCode().asDexCode().instructions) |
| .filter(DexInstruction::isCheckCast) |
| .count(); |
| if (method.qualifiedName().contains("spliterator")) { |
| assertEquals(5, numCheckCast); |
| } else { |
| assertEquals(1, numCheckCast); |
| } |
| } |
| } |
| } |