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 com.android.tools.r8.TestParameters;
import com.android.tools.r8.ToolHelper;
import com.android.tools.r8.ToolHelper.DexVm.Version;
import com.android.tools.r8.desugar.desugaredlibrary.DesugaredLibraryTestBase;
import com.android.tools.r8.utils.AndroidApiLevel;
import com.android.tools.r8.utils.BooleanUtils;
import com.android.tools.r8.utils.StringUtils;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentHashMap.KeySetView;
import org.junit.Assume;
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 static final String EXPECTED_RESULT = StringUtils.lines("1", "one=ONE, two=TWO");

  private final TestParameters parameters;
  private final boolean shrinkDesugaredLibrary;

  @Parameters(name = "{1}, shrinkDesugaredLibrary: {0}")
  public static List<Object[]> data() {
    return buildParameters(
        BooleanUtils.values(), getTestParameters().withDexRuntimes().withAllApiLevels().build());
  }

  public ConcurrentHashMapJDK11Test(boolean shrinkDesugaredLibrary, TestParameters parameters) {
    this.shrinkDesugaredLibrary = shrinkDesugaredLibrary;
    this.parameters = parameters;
  }

  @Test
  public void testD8() throws Exception {
    Assume.assumeTrue(isJDK11DesugaredLibrary());
    Assume.assumeFalse(
        "TODO(b/171682016): reduce methods are backported but rely on non backported ForkJoinPool",
        parameters.getDexRuntimeVersion().isEqualTo(Version.V4_0_4));
    KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters);
    testForD8(parameters.getBackend())
        .addLibraryFiles(ToolHelper.getAndroidJar(AndroidApiLevel.P))
        .addInnerClasses(ConcurrentHashMapJDK11Test.class)
        .setMinApi(parameters.getApiLevel())
        .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer)
        .compile()
        .addDesugaredCoreLibraryRunClassPath(
            this::buildDesugaredLibrary,
            parameters.getApiLevel(),
            keepRuleConsumer.get(),
            shrinkDesugaredLibrary)
        .run(parameters.getRuntime(), TestClass.class)
        .assertSuccessWithOutput(EXPECTED_RESULT);
  }

  @Test
  public void testR8() throws Exception {
    Assume.assumeTrue(isJDK11DesugaredLibrary());
    Assume.assumeFalse(
        "TODO(b/171682016): reduce methods are backported but rely on non backported ForkJoinPool",
        parameters.getDexRuntimeVersion().isEqualTo(Version.V4_0_4));
    KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters);
    testForR8(Backend.DEX)
        .addLibraryFiles(ToolHelper.getAndroidJar(AndroidApiLevel.P))
        .addInnerClasses(ConcurrentHashMapJDK11Test.class)
        .setMinApi(parameters.getApiLevel())
        .addKeepMainRule(TestClass.class)
        .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer)
        .compile()
        .addDesugaredCoreLibraryRunClassPath(
            this::buildDesugaredLibrary,
            parameters.getApiLevel(),
            keepRuleConsumer.get(),
            shrinkDesugaredLibrary)
        .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);
    }
  }
}