| // 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.conversiontests; |
| |
| import static com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification.SPECIFICATIONS_WITH_CF2CF; |
| import static com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification.getJdk8Jdk11; |
| import static junit.framework.TestCase.assertEquals; |
| import static junit.framework.TestCase.assertTrue; |
| |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.desugar.desugaredlibrary.DesugaredLibraryTestBase; |
| import com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification; |
| import com.android.tools.r8.desugar.desugaredlibrary.test.CustomLibrarySpecification; |
| import com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.FoundMethodSubject; |
| import java.util.List; |
| import java.util.function.Consumer; |
| 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 CallBackConversionTest extends DesugaredLibraryTestBase { |
| |
| private final TestParameters parameters; |
| private final LibraryDesugaringSpecification libraryDesugaringSpecification; |
| private final CompilationSpecification compilationSpecification; |
| |
| private static final AndroidApiLevel MIN_SUPPORTED = AndroidApiLevel.N; |
| private static final String EXPECTED_RESULT = StringUtils.lines("0", "1", "0", "1"); |
| |
| @Parameters(name = "{0}, spec: {1}, {2}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| getConversionParametersUpToExcluding(MIN_SUPPORTED), |
| getJdk8Jdk11(), |
| SPECIFICATIONS_WITH_CF2CF); |
| } |
| |
| public CallBackConversionTest( |
| TestParameters parameters, |
| LibraryDesugaringSpecification libraryDesugaringSpecification, |
| CompilationSpecification compilationSpecification) { |
| this.parameters = parameters; |
| this.libraryDesugaringSpecification = libraryDesugaringSpecification; |
| this.compilationSpecification = compilationSpecification; |
| } |
| |
| private void assertDuplicatedAPI(CodeInspector i) { |
| List<FoundMethodSubject> virtualMethods = i.clazz(Impl.class).virtualMethods(); |
| if (!libraryDesugaringSpecification.hasJDollarFunction(parameters)) { |
| // No need to duplicate the API with maintain prefix. |
| assertEquals(1, virtualMethods.size()); |
| return; |
| } |
| assertEquals(2, virtualMethods.size()); |
| assertTrue(anyVirtualMethodFirstParameterMatches(virtualMethods, "j$.util.function.Consumer")); |
| assertTrue( |
| anyVirtualMethodFirstParameterMatches(virtualMethods, "java.util.function.Consumer")); |
| } |
| |
| private boolean anyVirtualMethodFirstParameterMatches( |
| List<FoundMethodSubject> virtualMethods, String anObject) { |
| return virtualMethods.stream() |
| .anyMatch( |
| m -> |
| m.getMethod() |
| .getReference() |
| .proto |
| .parameters |
| .values[0] |
| .toString() |
| .equals(anObject)); |
| } |
| |
| @Test |
| public void testCallBack() throws Throwable { |
| testForDesugaredLibrary(parameters, libraryDesugaringSpecification, compilationSpecification) |
| .addProgramClasses(Impl.class) |
| .setCustomLibrarySpecification( |
| new CustomLibrarySpecification(CustomLibClass.class, MIN_SUPPORTED)) |
| .addKeepMainRule(Impl.class) |
| .compile() |
| .inspect(this::assertDuplicatedAPI) |
| .inspect(this::assertLibraryOverridesPresent) |
| .run(parameters.getRuntime(), Impl.class) |
| .assertSuccessWithOutput(EXPECTED_RESULT); |
| } |
| |
| private void assertLibraryOverridesPresent(CodeInspector i) { |
| // The j$ method can be optimized, but the java method should be present to be called |
| // through the library. |
| List<FoundMethodSubject> virtualMethods = i.clazz(Impl.class).virtualMethods(); |
| assertTrue( |
| virtualMethods.stream() |
| .anyMatch( |
| m -> |
| m.getMethod().getReference().name.toString().equals("foo") |
| && m.getMethod() |
| .getReference() |
| .proto |
| .parameters |
| .values[0] |
| .toString() |
| .equals("java.util.function.Consumer"))); |
| } |
| |
| static class Impl extends CustomLibClass { |
| |
| public int foo(Consumer<Object> o) { |
| o.accept(0); |
| return 1; |
| } |
| |
| public static void main(String[] args) { |
| Impl impl = new Impl(); |
| // Call foo through java parameter. |
| System.out.println(CustomLibClass.callFoo(impl, System.out::println)); |
| // Call foo through j$ parameter. |
| System.out.println(impl.foo(System.out::println)); |
| } |
| } |
| |
| abstract static class CustomLibClass { |
| |
| public abstract int foo(Consumer<Object> consumer); |
| |
| @SuppressWarnings({"UnusedReturnValue", "WeakerAccess"}) |
| public static int callFoo(CustomLibClass object, Consumer<Object> consumer) { |
| return object.foo(consumer); |
| } |
| } |
| } |