src/test/java/com/android/tools/r8/ir/optimize/classinliner/InstanceOfSpecializedMethodClassInlinerTest.java

// Copyright (c) 2021, 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.classinliner;

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;

/** Regression test for b/195234829. */
@RunWith(Parameterized.class)
public class InstanceOfSpecializedMethodClassInlinerTest extends TestBase {

  @Parameter public TestParameters parameters;

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

  @Test
  public void test() throws Exception {
    testForR8(parameters.getBackend())
        .addInnerClasses(getClass())
        .addKeepMainRule(Main.class)
        .enableInliningAnnotations()
        .setMinApi(parameters.getApiLevel())
        .compile()
        .run(parameters.getRuntime(), Main.class)
        .assertSuccessWithOutputLines("false", "true");
  }

  static class Main {

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

  static class A {

    @NeverInline
    boolean isB() {
      return false;
    }
  }

  static class B extends A {

    @NeverInline
    @Override
    boolean isB() {
      return true;
    }
  }
}