| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.emultest.java8.util; |
| |
| import com.google.gwt.emultest.java.util.EmulTestBase; |
| |
| import java.util.AbstractMap.SimpleImmutableEntry; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.Map.Entry; |
| |
| /** |
| * Tests for java.util.Map.Entry Java 8 API emulation. |
| */ |
| public class MapEntryTest extends EmulTestBase { |
| |
| private Entry<String, String> entry1; |
| private Entry<String, String> entry2; |
| |
| @Override |
| protected void gwtSetUp() throws Exception { |
| super.gwtSetUp(); |
| entry1 = createTestEntry1(); |
| entry2 = createTestEntry2(); |
| } |
| |
| public void testEntryComparingByKey() { |
| final Comparator<Entry<String, String>> entryComparator = Entry.comparingByKey(); |
| |
| assertEquals(-1, entryComparator.compare(entry1, entry2)); |
| assertEquals(1, entryComparator.compare(entry2, entry1)); |
| assertEquals(0, entryComparator.compare(entry1, entry1)); |
| assertEquals(0, entryComparator.compare(entry2, entry2)); |
| assertEquals(0, entryComparator.compare(entry1, createTestEntry1())); |
| assertEquals(0, entryComparator.compare(entry2, createTestEntry2())); |
| } |
| |
| public void testEntryComparingByKeyWithComparator() { |
| final Comparator<Entry<String, String>> entryComparator = |
| Entry.comparingByKey(Collections.reverseOrder()); |
| |
| assertEquals(1, entryComparator.compare(entry1, entry2)); |
| assertEquals(-1, entryComparator.compare(entry2, entry1)); |
| assertEquals(0, entryComparator.compare(entry1, entry1)); |
| assertEquals(0, entryComparator.compare(entry2, entry2)); |
| assertEquals(0, entryComparator.compare(entry1, createTestEntry1())); |
| assertEquals(0, entryComparator.compare(entry2, createTestEntry2())); |
| } |
| |
| public void testEntryComparingByValue() { |
| final Comparator<Entry<String, String>> valueComparator = Entry.comparingByValue(); |
| |
| assertEquals(-1, valueComparator.compare(entry1, entry2)); |
| assertEquals(1, valueComparator.compare(entry2, entry1)); |
| assertEquals(0, valueComparator.compare(entry1, entry1)); |
| assertEquals(0, valueComparator.compare(entry2, entry2)); |
| assertEquals(0, valueComparator.compare(entry1, createTestEntry1())); |
| assertEquals(0, valueComparator.compare(entry2, createTestEntry2())); |
| } |
| |
| public void testEntryComparingByValueWithComparator() { |
| final Comparator<Entry<String, String>> valueComparator = |
| Entry.comparingByValue(Collections.reverseOrder()); |
| |
| assertEquals(1, valueComparator.compare(entry1, entry2)); |
| assertEquals(-1, valueComparator.compare(entry2, entry1)); |
| assertEquals(0, valueComparator.compare(entry1, entry1)); |
| assertEquals(0, valueComparator.compare(entry2, entry2)); |
| assertEquals(0, valueComparator.compare(entry1, createTestEntry1())); |
| assertEquals(0, valueComparator.compare(entry2, createTestEntry2())); |
| } |
| |
| private static Entry<String, String> createTestEntry1() { |
| return new SimpleImmutableEntry<>("a", "A"); |
| } |
| |
| private static Entry<String, String> createTestEntry2() { |
| return new SimpleImmutableEntry<>("b", "B"); |
| } |
| } |