| // Copyright (c) 2020, 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.enumunboxing; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| 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; |
| |
| @RunWith(Parameterized.class) |
| public class EnumUnboxingReturnNullTest extends EnumUnboxingTestBase { |
| |
| private static final Class<MyEnum> ENUM_CLASS = MyEnum.class; |
| private static final String EXPECTED_RESULT = |
| StringUtils.lines( |
| "print1", "true", "print2", "true", "print2", "false", "0", "print3", "true"); |
| |
| private final TestParameters parameters; |
| private final boolean enumValueOptimization; |
| private final EnumKeepRules enumKeepRules; |
| |
| @Parameterized.Parameters(name = "{0} valueOpt: {1} keep: {2}") |
| public static List<Object[]> data() { |
| return enumUnboxingTestParameters(); |
| } |
| |
| public EnumUnboxingReturnNullTest( |
| TestParameters parameters, boolean enumValueOptimization, EnumKeepRules enumKeepRules) { |
| this.parameters = parameters; |
| this.enumValueOptimization = enumValueOptimization; |
| this.enumKeepRules = enumKeepRules; |
| } |
| |
| @Test |
| public void testEnumUnboxing() throws Exception { |
| Class<?> classToTest = ReturnNull.class; |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(classToTest, ENUM_CLASS) |
| .addKeepMainRule(classToTest) |
| .addKeepRules(enumKeepRules.getKeepRules()) |
| .addEnumUnboxingInspector(inspector -> inspector.assertUnboxed(ENUM_CLASS)) |
| .enableNeverClassInliningAnnotations() |
| .enableInliningAnnotations() |
| .addOptionsModification(opt -> enableEnumOptions(opt, enumValueOptimization)) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), classToTest) |
| .assertSuccessWithOutput(EXPECTED_RESULT); |
| } |
| |
| @NeverClassInline |
| enum MyEnum { |
| A, |
| B, |
| C |
| } |
| |
| static class ReturnNull { |
| |
| public static void main(String[] args) { |
| MyEnum myEnum1 = printAndReturnNull(); |
| System.out.println(myEnum1 == null); |
| MyEnum myEnum2 = printAndReturnMaybeNull(true); |
| System.out.println(myEnum2 == null); |
| MyEnum myEnum3 = printAndReturnMaybeNull(false); |
| System.out.println(myEnum3 == null); |
| System.out.println(MyEnum.A.ordinal()); |
| MyEnum[] myEnums = printAndReturnNullArray(); |
| System.out.println(myEnums == null); |
| } |
| |
| @NeverInline |
| static MyEnum printAndReturnNull() { |
| System.out.println("print1"); |
| return null; |
| } |
| |
| @NeverInline |
| static MyEnum printAndReturnMaybeNull(boolean bool) { |
| System.out.println("print2"); |
| if (bool) { |
| return null; |
| } else { |
| return MyEnum.B; |
| } |
| } |
| |
| @NeverInline |
| static MyEnum[] printAndReturnNullArray() { |
| System.out.println("print3"); |
| return null; |
| } |
| } |
| } |