| // Copyright (c) 2022, 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.classmerging.horizontal.interfaces; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.utils.StringUtils; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class CollisionWithDefaultMethodsTest extends TestBase { |
| |
| @Parameter() public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| getTestParameters().withAllRuntimes().withAllApiLevelsAlsoForCf().build()); |
| } |
| |
| private static final String EXPECTED_OUTPUT = |
| StringUtils.lines("Event1", "Event2", "Event1!", "Event2!", "Event1#", "Event2#"); |
| |
| @Test |
| public void testDesugaring() throws Exception { |
| testForDesugaring(parameters) |
| .addInnerClasses(getClass()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED_OUTPUT); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(TestClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .addKeepRules("-keep class ** { *; }") |
| .addHorizontallyMergedClassesInspector( |
| inspector -> { |
| if (parameters.isCfRuntime()) { |
| inspector.assertNoClassesMerged(); |
| } else if (parameters.isDexRuntime() |
| && parameters.canUseDefaultAndStaticInterfaceMethods()) { |
| assertEquals(2, inspector.getMergeGroups().size()); |
| } |
| }) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED_OUTPUT); |
| } |
| |
| static class Event {} |
| |
| static class Event1 extends Event { |
| @Override |
| public String toString() { |
| return "Event1"; |
| } |
| } |
| |
| static class Event2 extends Event { |
| @Override |
| public String toString() { |
| return "Event2"; |
| } |
| } |
| |
| interface GenericListener<T extends Event> { |
| void onEvent(T event); |
| } |
| |
| interface Listener1 extends GenericListener<Event1> { |
| void onEvent(Event1 event); |
| } |
| |
| interface Listener2 extends GenericListener<Event2> { |
| void onEvent(Event2 event); |
| } |
| |
| static class TestClass { |
| |
| static <T extends Event> void invokeOnGenericListenerInterface( |
| GenericListener<T> listener, Class<T> eventClass) throws Exception { |
| listener.onEvent(eventClass.getDeclaredConstructor().newInstance()); |
| } |
| |
| static void eventOnListener1(Listener1 listener) throws Exception { |
| invokeOnGenericListenerInterface(listener, Event1.class); |
| } |
| |
| static void eventOnListener2(Listener2 listener) throws Exception { |
| invokeOnGenericListenerInterface(listener, Event2.class); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| eventOnListener1(System.out::println); |
| eventOnListener2(System.out::println); |
| // This will create two merge groups with default methods in the implemented interfaces. |
| eventOnListener1(e -> System.out.println(e.toString() + "!")); |
| eventOnListener2(e -> System.out.println(e.toString() + "!")); |
| eventOnListener1(e -> System.out.println(e.toString() + "#")); |
| eventOnListener2(e -> System.out.println(e.toString() + "#")); |
| } |
| } |
| } |