src/test/java/com/android/tools/r8/desugar/desugaredlibrary/jdk11/ConcurrentHashMapJDK11Test.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.desugar.desugaredlibrary.jdk11;

import static com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification.DEFAULT_SPECIFICATIONS;
import static com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification.JDK11;

import com.android.tools.r8.TestParameters;
import com.android.tools.r8.ToolHelper.DexVm.Version;
import com.android.tools.r8.desugar.desugaredlibrary.DesugaredLibraryTestBase;
import com.android.tools.r8.desugar.desugaredlibrary.jdk11.ChannelSetTest.CustomLib;
import com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification;
import com.android.tools.r8.desugar.desugaredlibrary.test.CustomLibrarySpecification;
import com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification;
import com.android.tools.r8.utils.AndroidApiLevel;
import com.android.tools.r8.utils.StringUtils;
import com.google.common.collect.ImmutableList;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentHashMap.KeySetView;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
public class ConcurrentHashMapJDK11Test extends DesugaredLibraryTestBase {

  private final TestParameters parameters;
  private final LibraryDesugaringSpecification libraryDesugaringSpecification;
  private final CompilationSpecification compilationSpecification;

  private static final String EXPECTED_RESULT = StringUtils.lines("1", "one=ONE, two=TWO");

  @Parameters(name = "{0}, spec: {1}, {2}")
  public static List<Object[]> data() {
    return buildParameters(
        // Skip Android 4.0.4 due to missing ForkJoinPool.
        getTestParameters()
            .withDexRuntimesStartingFromIncluding(Version.V4_4_4)
            .withAllApiLevels()
            .build(),
        ImmutableList.of(JDK11),
        DEFAULT_SPECIFICATIONS);
  }

  public ConcurrentHashMapJDK11Test(
      TestParameters parameters,
      LibraryDesugaringSpecification libraryDesugaringSpecification,
      CompilationSpecification compilationSpecification) {
    this.parameters = parameters;
    this.libraryDesugaringSpecification = libraryDesugaringSpecification;
    this.compilationSpecification = compilationSpecification;
  }

  @Test
  public void test() throws Exception {
    testForDesugaredLibrary(parameters, libraryDesugaringSpecification, compilationSpecification)
        .addInnerClasses(ConcurrentHashMapJDK11Test.class)
        .setCustomLibrarySpecification(
            new CustomLibrarySpecification(CustomLib.class, AndroidApiLevel.B))
        .addKeepMainRule(TestClass.class)
        .run(parameters.getRuntime(), TestClass.class)
        .assertSuccessWithOutput(EXPECTED_RESULT);
  }

  public static class TestClass {

    public static void main(String[] args) {
      KeySetView<Object, Boolean> keySet = ConcurrentHashMap.newKeySet();
      keySet.add(new Object());
      System.out.println(keySet.size());

      ConcurrentHashMap<String, String> chm = new ConcurrentHashMap<>();
      chm.put("one", "ONE");
      chm.put("two", "TWO");
      String reduced = chm.reduce(1, (key, value) -> key + "=" + value, (s1, s2) -> s1 + ", " + s2);
      System.out.println(reduced);
    }
  }
}