src/test/java/com/android/tools/r8/bridgeremoval/B419464490Test.java

// Copyright (c) 2025, 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.bridgeremoval;

import com.android.tools.r8.NeverClassInline;
import com.android.tools.r8.NeverInline;
import com.android.tools.r8.NoHorizontalClassMerging;
import com.android.tools.r8.NoVerticalClassMerging;
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 B419464490Test extends TestBase {

  @Parameter(0)
  public TestParameters parameters;

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

  @Test
  public void test() throws Exception {
    testForR8(parameters)
        .addInnerClasses(getClass())
        .addKeepMainRule(Main.class)
        .enableInliningAnnotations()
        .enableNeverClassInliningAnnotations()
        .enableNoHorizontalClassMergingAnnotations()
        .enableNoVerticalClassMergingAnnotations()
        .compile()
        .run(parameters.getRuntime(), Main.class)
        .assertSuccessWithOutputLines("I", "J");
  }

  static class Main {

    public static void main(String[] strArr) {
      new A().m();
      new A().callJ();
    }
  }

  @NoHorizontalClassMerging
  @NoVerticalClassMerging
  interface I {

    @NeverInline
    default void m() {
      System.out.println("I");
    }
  }

  @NoHorizontalClassMerging
  @NoVerticalClassMerging
  interface J {

    @NeverInline
    default void m() {
      System.out.println("J");
    }
  }

  @NeverClassInline
  static class A implements I, J {

    @NeverInline
    @Override
    public void m() {
      I.super.m();
    }

    // So that J.m is not removed by tree shaking.
    @NeverInline
    public void callJ() {
      J.super.m();
    }
  }
}