src/test/java/com/android/tools/r8/enumunboxing/CloneOnEnumInstanceInSubClassEnumUnboxingTest.java

// Copyright (c) 2024, 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.NeverInline;
import com.android.tools.r8.TestBase;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.TestParametersCollection;
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 CloneOnEnumInstanceInSubClassEnumUnboxingTest extends TestBase {

  @Parameter public TestParameters parameters;

  @Parameters(name = "{0}")
  public static TestParametersCollection data() {
    return getTestParameters().withAllRuntimesAndApiLevels().build();
  }

  @Test
  public void test() throws Exception {
    testForR8(parameters.getBackend())
        .addInnerClasses(getClass())
        .addKeepMainRule(Main.class)
        .addEnumUnboxingInspector(inspector -> inspector.assertNotUnboxed(MyEnum.class))
        .setMinApi(parameters)
        .enableInliningAnnotations()
        .compile()
        .run(parameters.getRuntime(), Main.class)
        .assertSuccessWithOutputLines("A", "Hello B");
  }

  static class Main {

    public static void main(String[] args) {
      System.out.println(MyEnum.A);
      System.out.println(MyEnum.B);
    }
  }

  enum MyEnum {
    A,
    B {
      @NeverInline
      @Override
      public String toString() {
        try {
          clone();
          return "Not expected!";
        } catch (CloneNotSupportedException e) {
          return "Hello " + super.toString();
        }
      }
    }
  }
}