src/test/java/com/android/tools/r8/desugar/desugaredlibrary/jdk11/FlowTest.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.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.BooleanUtils;
import com.android.tools.r8.utils.StringUtils;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
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 FlowTest extends DesugaredLibraryTestBase {

  private final TestParameters parameters;
  private final boolean shrinkDesugaredLibrary;

  private static final Path INPUT_JAR = Paths.get(ToolHelper.EXAMPLES_JAVA9_BUILD_DIR + "flow.jar");
  private static final String EXPECTED_OUTPUT = StringUtils.lines("true");
  private static final String MAIN_CLASS = "flow.FlowExample";

  @Parameters(name = "{1}, shrinkDesugaredLibrary: {0}")
  public static List<Object[]> data() {
    return buildParameters(
        BooleanUtils.values(),
        // The test uses ForkJoinPool which is available starting from V4.4.4.
        getTestParameters()
            .withDexRuntimesStartingFromIncluding(Version.V4_4_4)
            .withAllApiLevels()
            .build());
  }

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

  @Test
  public void testD8() throws Exception {
    Assume.assumeTrue(isJDK11DesugaredLibrary());
    KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters);
    testForD8(parameters.getBackend())
        .addLibraryFiles(getLibraryFile())
        .addProgramFiles(INPUT_JAR)
        .setMinApi(parameters.getApiLevel())
        .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer)
        .compile()
        .addDesugaredCoreLibraryRunClassPath(
            this::buildDesugaredLibrary,
            parameters.getApiLevel(),
            keepRuleConsumer.get(),
            shrinkDesugaredLibrary)
        .run(parameters.getRuntime(), MAIN_CLASS)
        .assertSuccessWithOutput(EXPECTED_OUTPUT);
  }

  @Test
  public void testR8() throws Exception {
    Assume.assumeTrue(isJDK11DesugaredLibrary());
    KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters);
    testForR8(parameters.getBackend())
        .addLibraryFiles(getLibraryFile())
        .addProgramFiles(INPUT_JAR)
        .setMinApi(parameters.getApiLevel())
        .addKeepMainRule(MAIN_CLASS)
        .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer)
        .compile()
        .addDesugaredCoreLibraryRunClassPath(
            this::buildDesugaredLibrary,
            parameters.getApiLevel(),
            keepRuleConsumer.get(),
            shrinkDesugaredLibrary)
        .run(parameters.getRuntime(), MAIN_CLASS)
        .assertSuccessWithOutput(EXPECTED_OUTPUT);
  }
}