src/test/java/com/android/tools/r8/ir/optimize/instanceofremoval/ArrayInstanceOfCloneableAndSerializableTest.java

// Copyright (c) 2022, 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.instanceofremoval;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assume.assumeTrue;

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.InstructionSubject;
import com.android.tools.r8.utils.codeinspector.MethodSubject;
import java.io.Serializable;
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 ArrayInstanceOfCloneableAndSerializableTest extends TestBase {

  @Parameter(0)
  public TestParameters parameters;

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

  @Test
  public void testJvm() throws Exception {
    assumeTrue(parameters.isCfRuntime());
    testForJvm()
        .addTestClasspath()
        .run(parameters.getRuntime(), Main.class)
        .assertSuccessWithOutputLines("true", "true");
  }

  @Test
  public void testD8() throws Exception {
    assumeTrue(parameters.isDexRuntime());
    testForD8()
        .addProgramClasses(Main.class)
        .release()
        .setMinApi(parameters.getApiLevel())
        .compile()
        .inspect(
            inspector -> {
              MethodSubject mainMethodSubject = inspector.clazz(Main.class).mainMethod();
              assertEquals(
                  2,
                  mainMethodSubject
                      .streamInstructions()
                      .filter(InstructionSubject::isInstanceOf)
                      .count());
            })
        .run(parameters.getRuntime(), Main.class)
        .assertSuccessWithOutputLines("true", "true");
  }

  @Test
  public void testR8() throws Exception {
    testForR8(parameters.getBackend())
        .addProgramClasses(Main.class)
        .addKeepMainRule(Main.class)
        .setMinApi(parameters.getApiLevel())
        .compile()
        .inspect(
            inspector -> {
              MethodSubject mainMethodSubject = inspector.clazz(Main.class).mainMethod();
              assertTrue(
                  mainMethodSubject
                      .streamInstructions()
                      .noneMatch(InstructionSubject::isInstanceOf));
            })
        .run(parameters.getRuntime(), Main.class)
        .assertSuccessWithOutputLines("true", "true");
  }

  static class Main {

    public static void main(String[] args) {
      byte[] bytes = new byte[0];
      System.out.println(bytes instanceof Cloneable);
      System.out.println(bytes instanceof Serializable);
    }
  }
}