| // 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.desugar.staticinterfacemethod; |
| |
| import static com.android.tools.r8.desugar.staticinterfacemethod.InvokeStaticInterfaceNestedTest.Library.foo; |
| import static org.junit.Assert.assertThrows; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assume.assumeTrue; |
| |
| import com.android.tools.r8.CompilationFailedException; |
| import com.android.tools.r8.DesugarTestConfiguration; |
| import com.android.tools.r8.R8FullTestBuilder; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.TestRunResult; |
| import com.android.tools.r8.TestRuntime.CfVm; |
| import com.android.tools.r8.ToolHelper.DexVm.Version; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| 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 InvokeStaticInterfaceNestedTest extends TestBase { |
| |
| private final TestParameters parameters; |
| private final String UNEXPECTED_SUCCESS = "Hello World!"; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimes().withAllApiLevelsAlsoForCf().build(); |
| } |
| |
| public InvokeStaticInterfaceNestedTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| private void checkDexResult(TestRunResult<?> runResult, boolean isDesugared) { |
| boolean didDesugarInterfaceMethods = |
| isDesugared && !parameters.canUseDefaultAndStaticInterfaceMethodsWhenDesugaring(); |
| if (parameters.isCfRuntime()) { |
| if (parameters.getRuntime().asCf().isNewerThanOrEqual(CfVm.JDK9)) { |
| // The correct expected behavior is ICCE. |
| runResult.assertFailureWithErrorThatThrows(IncompatibleClassChangeError.class); |
| } else if (didDesugarInterfaceMethods) { |
| runResult.assertFailureWithErrorThatThrows(NoSuchMethodError.class); |
| } else { |
| // Dex VMs and JDK 8 will just dispatch (this is not the intended behavior). |
| runResult.assertSuccessWithOutputLines(UNEXPECTED_SUCCESS); |
| } |
| return; |
| } |
| if (parameters.canUseDefaultAndStaticInterfaceMethodsWhenDesugaring()) { |
| // Dex VMs and JDK 8 will just dispatch (this is not the intended behavior). |
| runResult.assertSuccessWithOutputLines(UNEXPECTED_SUCCESS); |
| return; |
| } |
| Version version = parameters.getRuntime().asDex().getVm().getVersion(); |
| if (version.isOlderThanOrEqual(Version.V4_4_4)) { |
| runResult.assertFailureWithErrorThatThrows(VerifyError.class); |
| } else { |
| runResult.assertFailureWithErrorThatThrows(NoSuchMethodError.class); |
| } |
| } |
| |
| @Test |
| public void testDesugar() throws Exception { |
| testForDesugaring(parameters) |
| .addProgramClassFileData( |
| rewriteToUseNonInterfaceMethodReference(Main.class, "main"), |
| rewriteToUseNonInterfaceMethodReference(Library.class, "foo")) |
| .run(parameters.getRuntime(), Main.class) |
| .apply( |
| result -> |
| result.applyIf( |
| DesugarTestConfiguration::isDesugared, |
| r -> checkDexResult(r, true), |
| r -> checkDexResult(r, false))); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| assumeTrue(parameters.isDexRuntime() || parameters.getApiLevel() == AndroidApiLevel.B); |
| final R8FullTestBuilder testBuilder = |
| testForR8(parameters.getBackend()) |
| .addProgramClassFileData( |
| rewriteToUseNonInterfaceMethodReference(Main.class, "main"), |
| rewriteToUseNonInterfaceMethodReference(Library.class, "foo")) |
| .addKeepAllClassesRule() |
| .setMinApi(parameters.getApiLevel()) |
| .addKeepMainRule(Main.class); |
| if (parameters.isDexRuntime()) { |
| checkDexResult(testBuilder.run(parameters.getRuntime(), Main.class), true); |
| } else { |
| // TODO(b/166213037): Should not throw an error. |
| assertThrows(CompilationFailedException.class, testBuilder::compile); |
| } |
| } |
| |
| private byte[] rewriteToUseNonInterfaceMethodReference(Class<?> clazz, String methodName) |
| throws Exception { |
| return transformer(clazz) |
| .transformMethodInsnInMethod( |
| methodName, |
| (opcode, owner, name, descriptor, isInterface, visitor) -> { |
| assertTrue(isInterface); |
| visitor.visitMethodInsn(opcode, owner, name, descriptor, false); |
| }) |
| .transform(); |
| } |
| |
| public interface Library { |
| |
| static void foo() { |
| bar(); // <-- will be rewritten to invoke-static Library::bar(); |
| } |
| |
| static void bar() { |
| System.out.println("Hello World!"); |
| } |
| } |
| |
| public static class Main { |
| |
| public static void main(String[] args) { |
| foo(); // <-- will be rewritten to invoke-static Library::foo(); |
| } |
| } |
| } |