| // 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.optimize.canonicalization; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| 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 com.android.tools.r8.utils.codeinspector.FieldSubject; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| 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 EnumCanonicalizationTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public EnumCanonicalizationTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(EnumCanonicalizationTest.class) |
| .addKeepMainRule(TestClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("A", "A", "A", "Class initialization!", "A", "A", "A"); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject classSubject = inspector.clazz(TestClass.class); |
| assertThat(classSubject, isPresent()); |
| |
| ClassSubject enumSubject = inspector.clazz(MyEnum.class); |
| assertThat(enumSubject, isPresent()); |
| |
| FieldSubject enumFieldSubject = enumSubject.uniqueFieldWithName("A"); |
| assertThat(enumFieldSubject, isPresent()); |
| |
| ClassSubject enumWithClassInitializationSideEffectsSubject = |
| inspector.clazz(MyEnumWithClassInitializationSideEffects.class); |
| assertThat(enumWithClassInitializationSideEffectsSubject, isPresent()); |
| |
| FieldSubject enumWithClassInitializationSideEffectsFieldSubject = |
| enumWithClassInitializationSideEffectsSubject.uniqueFieldWithName("A"); |
| assertThat(enumWithClassInitializationSideEffectsFieldSubject, isPresent()); |
| |
| MethodSubject mainMethodSubject = classSubject.mainMethod(); |
| assertThat(mainMethodSubject, isPresent()); |
| assertEquals( |
| 1, |
| mainMethodSubject |
| .streamInstructions() |
| .filter(InstructionSubject::isStaticGet) |
| .map(InstructionSubject::getField) |
| .filter(enumFieldSubject.getField().field::equals) |
| .count()); |
| assertEquals( |
| 1, |
| mainMethodSubject |
| .streamInstructions() |
| .filter(InstructionSubject::isStaticGet) |
| .map(InstructionSubject::getField) |
| .filter(enumWithClassInitializationSideEffectsFieldSubject.getField().field::equals) |
| .count()); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| System.out.println(MyEnum.A); |
| System.out.println(MyEnum.A); |
| System.out.println(MyEnum.A); |
| System.out.println(MyEnumWithClassInitializationSideEffects.A); |
| System.out.println(MyEnumWithClassInitializationSideEffects.A); |
| System.out.println(MyEnumWithClassInitializationSideEffects.A); |
| } |
| } |
| |
| enum MyEnum { |
| A |
| } |
| |
| enum MyEnumWithClassInitializationSideEffects { |
| A; |
| |
| static { |
| System.out.println("Class initialization!"); |
| } |
| } |
| } |