| // Copyright (c) 2019, 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; |
| |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import java.util.LinkedHashSet; |
| import java.util.Spliterator; |
| import java.util.Spliterators; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class LinkedHashSetTest extends CoreLibDesugarTestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withDexRuntimes().withAllApiLevels().build(); |
| } |
| |
| public LinkedHashSetTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testLinkedHashSetOverrides() throws Exception { |
| String stdOut = |
| testForD8() |
| .addInnerClasses(LinkedHashSetTest.class) |
| .setMinApi(parameters.getApiLevel()) |
| .enableCoreLibraryDesugaring(parameters.getApiLevel()) |
| .compile() |
| .addDesugaredCoreLibraryRunClassPath( |
| this::buildDesugaredLibrary, parameters.getApiLevel()) |
| .run(parameters.getRuntime(), Executor.class) |
| .assertSuccess() |
| .getStdOut(); |
| assertLines2By2Correct(stdOut); |
| } |
| |
| static class Executor { |
| @SuppressWarnings("RedundantOperationOnEmptyContainer") |
| public static void main(String[] args) { |
| Spliterator<String> spliterator; |
| |
| // Spliterator of Set is only distinct. |
| // Spliterator of LinkedHashSet is distinct and ordered. |
| // Spliterator of CustomLinkedHashSetOverride is distinct, ordered and immutable. |
| // If an incorrect method is found, characteristics are incorrect. |
| |
| spliterator = new LinkedHashSet<String>().spliterator(); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.DISTINCT)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.ORDERED)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.IMMUTABLE)); |
| System.out.println("false"); |
| |
| spliterator = new CustomLinkedHashSetOverride<String>().spliterator(); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.DISTINCT)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.ORDERED)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.IMMUTABLE)); |
| System.out.println("true"); |
| |
| spliterator = new CustomLinkedHashSetNoOverride<String>().spliterator(); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.DISTINCT)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.ORDERED)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.IMMUTABLE)); |
| System.out.println("false"); |
| |
| spliterator = new CustomLinkedHashSetOverride<String>().superSpliterator(); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.DISTINCT)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.ORDERED)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.IMMUTABLE)); |
| System.out.println("false"); |
| |
| spliterator = new SubclassOverride<String>().superSpliterator(); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.DISTINCT)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.ORDERED)); |
| System.out.println("true"); |
| System.out.println(spliterator.hasCharacteristics(Spliterator.IMMUTABLE)); |
| System.out.println("true"); |
| } |
| } |
| |
| static class CustomLinkedHashSetOverride<E> extends LinkedHashSet<E> { |
| |
| @Override |
| public Spliterator<E> spliterator() { |
| return Spliterators.spliterator( |
| this, Spliterator.DISTINCT | Spliterator.ORDERED | Spliterator.IMMUTABLE); |
| } |
| |
| public Spliterator<E> superSpliterator() { |
| return super.spliterator(); |
| } |
| } |
| |
| static class SubclassOverride<E> extends CustomLinkedHashSetOverride<E> { |
| @Override |
| public Spliterator<E> superSpliterator() { |
| return super.spliterator(); |
| } |
| } |
| |
| @SuppressWarnings("WeakerAccess") |
| static class CustomLinkedHashSetNoOverride<E> extends LinkedHashSet<E> {} |
| } |