| // 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.classmerging; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.AssumeMayHaveSideEffects; |
| import com.android.tools.r8.CompilationFailedException; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.FoundClassSubject; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.concurrent.ExecutionException; |
| import java.util.stream.Collectors; |
| 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 StaticClassMergerTest extends TestBase { |
| |
| static class StaticMergeCandidateA { |
| |
| @AssumeMayHaveSideEffects |
| @NeverInline |
| public static String m() { |
| return "StaticMergeCandidateA.m()"; |
| } |
| } |
| |
| static class StaticMergeCandidateB { |
| |
| @AssumeMayHaveSideEffects |
| @NeverInline |
| public static String m() { |
| return "StaticMergeCandidateB.m()"; |
| } |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| System.out.println(StaticMergeCandidateA.m()); |
| System.out.print(StaticMergeCandidateB.m()); |
| } |
| } |
| |
| private final String EXPECTED = |
| StringUtils.joinLines("StaticMergeCandidateA.m()", "StaticMergeCandidateB.m()"); |
| |
| private final TestParameters parameters; |
| |
| public StaticClassMergerTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void testRuntime() throws IOException, CompilationFailedException, ExecutionException { |
| testForRuntime(parameters.getRuntime(), parameters.getApiLevel()) |
| .addInnerClasses(StaticClassMergerTest.class) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED); |
| } |
| |
| @Test |
| public void testStaticClassIsRemoved() throws Exception { |
| CodeInspector inspector = |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(StaticClassMergerTest.class) |
| .addKeepMainRule(TestClass.class) |
| .noMinification() |
| .enableInliningAnnotations() |
| .enableSideEffectAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED) |
| .inspector(); |
| |
| // Check that one of the two static merge candidates has been removed |
| List<FoundClassSubject> classes = |
| inspector.allClasses().stream() |
| .filter(clazz -> clazz.getOriginalName().contains("StaticMergeCandidate")) |
| .collect(Collectors.toList()); |
| assertEquals(1, classes.size()); |
| |
| // Check that the remaining static merge candidate has two methods. |
| FoundClassSubject remaining = classes.get(0); |
| assertEquals(2, remaining.allMethods().size()); |
| } |
| } |