| // 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.corelib; |
| |
| import static com.android.tools.r8.utils.FileUtils.JAR_EXTENSION; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import com.android.tools.r8.utils.codeinspector.InvokeInstructionSubject; |
| import java.nio.file.Paths; |
| import java.util.Iterator; |
| import java.util.Optional; |
| import java.util.OptionalDouble; |
| import java.util.OptionalInt; |
| import java.util.OptionalLong; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class JavaUtilOptionalTest extends CoreLibDesugarTestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withDexRuntimes().withAllApiLevels().build(); |
| } |
| |
| public JavaUtilOptionalTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| private void checkRewrittenInvokes(CodeInspector inspector) { |
| if (!requiresEmulatedInterfaceCoreLibDesugaring(parameters)) { |
| return; |
| } |
| ClassSubject classSubject = inspector.clazz(TestClass.class); |
| assertThat(classSubject, isPresent()); |
| Iterator<InvokeInstructionSubject> iterator = |
| classSubject |
| .uniqueMethodWithName("main") |
| .iterateInstructions(InstructionSubject::isInvokeStatic); |
| assertTrue(iterator.next().holder().is("j$.util.Optional")); |
| assertTrue(iterator.next().holder().is("j$.util.Optional")); |
| assertTrue(iterator.next().holder().is("j$.util.OptionalInt")); |
| assertTrue(iterator.next().holder().is("j$.util.OptionalInt")); |
| assertTrue(iterator.next().holder().is("j$.util.OptionalLong")); |
| assertTrue(iterator.next().holder().is("j$.util.OptionalLong")); |
| assertTrue(iterator.next().holder().is("j$.util.OptionalDouble")); |
| assertTrue(iterator.next().holder().is("j$.util.OptionalDouble")); |
| } |
| |
| @Test |
| public void testJavaUtilOptional() throws Exception { |
| String expectedOutput = |
| StringUtils.lines( |
| "false", |
| "true", |
| "Hello, world!", |
| "false", |
| "true", |
| "42", |
| "false", |
| "true", |
| "4242", |
| "false", |
| "true", |
| "42.42"); |
| testForD8() |
| .addInnerClasses(JavaUtilOptionalTest.class) |
| .addLibraryFiles(ToolHelper.getAndroidJar(AndroidApiLevel.P)) |
| .setMinApi(parameters.getApiLevel()) |
| .enableCoreLibraryDesugaring(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::checkRewrittenInvokes) |
| .addDesugaredCoreLibraryRunClassPath(this::buildDesugaredLibrary, parameters.getApiLevel()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(expectedOutput); |
| } |
| |
| @Test |
| public void testJavaOptionalJava9() throws Exception { |
| testForD8() |
| .addProgramFiles( |
| Paths.get(ToolHelper.EXAMPLES_JAVA9_BUILD_DIR).resolve("backport" + JAR_EXTENSION)) |
| .setMinApi(parameters.getApiLevel()) |
| .enableCoreLibraryDesugaring(parameters.getApiLevel()) |
| .compile() |
| .addDesugaredCoreLibraryRunClassPath(this::buildDesugaredLibrary, parameters.getApiLevel()) |
| .run(parameters.getRuntime(), "backport.OptionalBackportJava9Main") |
| .assertSuccess(); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| System.out.println(Optional.empty().isPresent()); |
| Optional optional = Optional.of("Hello, world!"); |
| System.out.println(optional.isPresent()); |
| System.out.println(optional.get()); |
| |
| System.out.println(OptionalInt.empty().isPresent()); |
| OptionalInt optionalInt = OptionalInt.of(42); |
| System.out.println(optionalInt.isPresent()); |
| System.out.println(optionalInt.getAsInt()); |
| |
| System.out.println(OptionalLong.empty().isPresent()); |
| OptionalLong optionalLong = OptionalLong.of(4242L); |
| System.out.println(optionalLong.isPresent()); |
| System.out.println(optionalLong.getAsLong()); |
| |
| System.out.println(OptionalDouble.empty().isPresent()); |
| OptionalDouble optionalDouble = OptionalDouble.of(42.42); |
| System.out.println(optionalDouble.isPresent()); |
| System.out.println(optionalDouble.getAsDouble()); |
| } |
| } |
| } |