| // Copyright (c) 2018, 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.shaking.defaultmethods; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isAbstract; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertFalse; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.ThrowingConsumer; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import com.google.common.collect.ImmutableList; |
| import java.util.List; |
| 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 DefaultMethodsTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public DefaultMethodsTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| private void runTest( |
| List<String> additionalKeepRules, |
| ThrowingConsumer<CodeInspector, RuntimeException> inspection) |
| throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses( |
| InterfaceWithDefaultMethods.class, |
| ClassImplementingInterface.class, |
| OtherClassImplementingInterface.class, |
| TestClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .addKeepMainRule(TestClass.class) |
| .addKeepRules(additionalKeepRules) |
| .noMinification() |
| .compile() |
| .inspect(inspection); |
| } |
| |
| private void interfaceNotKept(CodeInspector inspector) { |
| assertFalse(inspector.clazz(InterfaceWithDefaultMethods.class).isPresent()); |
| } |
| |
| private void defaultMethodNotKept(CodeInspector inspector) { |
| ClassSubject clazz = inspector.clazz(InterfaceWithDefaultMethods.class); |
| assertThat(clazz, isPresent()); |
| assertThat(clazz.method("int", "method", ImmutableList.of()), not(isPresent())); |
| } |
| |
| private void defaultMethodKept(CodeInspector inspector) { |
| ClassSubject clazz = inspector.clazz(InterfaceWithDefaultMethods.class); |
| assertThat(clazz, isPresent()); |
| MethodSubject method = clazz.method("int", "method", ImmutableList.of()); |
| assertThat(method, isPresent()); |
| ClassSubject companionClass = clazz.toCompanionClass(); |
| if (parameters.canUseDefaultAndStaticInterfaceMethods()) { |
| assertThat(method, not(isAbstract())); |
| assertThat(companionClass, not(isPresent())); |
| } else { |
| assertThat(method, isAbstract()); |
| assertThat(companionClass, isPresent()); |
| MethodSubject defaultMethod = method.toMethodOnCompanionClass(); |
| assertThat(defaultMethod, isPresent()); |
| } |
| } |
| |
| private void defaultMethodKeptWithoutCompanionClass(CodeInspector inspector) { |
| ClassSubject clazz = inspector.clazz(InterfaceWithDefaultMethods.class); |
| assertThat(clazz, isPresent()); |
| MethodSubject method = clazz.method("int", "method", ImmutableList.of()); |
| assertThat(method, isPresent()); |
| ClassSubject companionClass = clazz.toCompanionClass(); |
| if (parameters.canUseDefaultAndStaticInterfaceMethods()) { |
| assertThat(method, not(isAbstract())); |
| } else { |
| assertThat(method, isAbstract()); |
| } |
| assertThat(companionClass, not(isPresent())); |
| } |
| |
| @Test |
| public void testInterfaceNotKept() throws Exception { |
| runTest(ImmutableList.of(), this::interfaceNotKept); |
| } |
| |
| @Test |
| public void testDefaultMethodNotKept() throws Exception { |
| runTest( |
| ImmutableList.of( |
| "-keep interface " + InterfaceWithDefaultMethods.class.getTypeName() + "{", "}"), |
| this::defaultMethodNotKept); |
| } |
| |
| @Test |
| public void testDefaultMethodKeptWithMethods() throws Exception { |
| runTest( |
| ImmutableList.of( |
| "-keep interface " + InterfaceWithDefaultMethods.class.getTypeName() + "{", |
| " <methods>;", |
| "}"), |
| this::defaultMethodKept); |
| } |
| |
| @Test |
| public void testDefaultMethodsKeptExplicitly() throws Exception { |
| runTest( |
| ImmutableList.of( |
| "-keep interface " + InterfaceWithDefaultMethods.class.getTypeName() + "{", |
| " public int method();", |
| "}"), |
| this::defaultMethodKept); |
| } |
| |
| @Test |
| public void testDefaultMethodNotKeptIndirectly() throws Exception { |
| runTest( |
| ImmutableList.of( |
| "-keep class " + ClassImplementingInterface.class.getTypeName() + "{", |
| " <methods>;", |
| "}", |
| // Prevent InterfaceWithDefaultMethods from being merged into ClassImplementingInterface |
| "-keep class " + InterfaceWithDefaultMethods.class.getTypeName()), |
| this::defaultMethodNotKept); |
| } |
| |
| @Test |
| public void testDefaultMethodKeptIndirectly() throws Exception { |
| runTest( |
| ImmutableList.of( |
| "-keep class " + ClassImplementingInterface.class.getTypeName() + "{", |
| " <methods>;", |
| "}", |
| "-keep class " + TestClass.class.getCanonicalName() + "{", |
| " public void useInterfaceMethod();", |
| "}", |
| // Prevent InterfaceWithDefaultMethods from being merged into ClassImplementingInterface |
| "-keep class " + InterfaceWithDefaultMethods.class.getTypeName()), |
| this::defaultMethodKeptWithoutCompanionClass); |
| } |
| } |