| // 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.ir.analysis.sideeffect; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| 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 SingletonClassInitializerPatternCannotBePostponedTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public SingletonClassInitializerPatternCannotBePostponedTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(SingletonClassInitializerPatternCannotBePostponedTest.class) |
| .addKeepMainRule(TestClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("Hello world!"); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject classSubject = inspector.clazz(A.class); |
| assertThat(classSubject, isPresent()); |
| |
| // A.inlineable() cannot be inlined because it should trigger the class initialization of A, |
| // which should trigger the class initialization of B, which will print "Hello". |
| assertThat(classSubject.uniqueMethodWithName("inlineable"), isPresent()); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| A.inlineable(); |
| System.out.println(A.getInstance().getMessage()); |
| } |
| } |
| |
| static class A { |
| |
| static B INSTANCE = new B("world!"); |
| |
| static void inlineable() { |
| System.out.print(" "); |
| } |
| |
| static B getInstance() { |
| return INSTANCE; |
| } |
| } |
| |
| static class B { |
| |
| static { |
| System.out.print("Hello"); |
| } |
| |
| final String message; |
| |
| B(String message) { |
| this.message = message; |
| } |
| |
| String getMessage() { |
| return message; |
| } |
| } |
| } |