| /* |
| * Copyright (C) 2007 The Guava Authors |
| * |
| * 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.common.collect; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static java.util.Arrays.asList; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.testing.EqualsTester; |
| |
| import junit.framework.TestCase; |
| |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| /** |
| * Unit tests for {@code LinkedHashMultimap}. |
| * |
| * @author Jared Levy |
| */ |
| @GwtCompatible(emulated = true) |
| public class LinkedHashMultimapTest extends TestCase { |
| |
| public void testValueSetHashTableExpansion() { |
| LinkedHashMultimap<String, Integer> multimap = LinkedHashMultimap.create(); |
| for (int z = 1; z <= 100; z++) { |
| multimap.put("a", z); |
| // The Eclipse compiler (and hence GWT) rejects a parameterized cast. |
| @SuppressWarnings("unchecked") |
| LinkedHashMultimap<String, Integer>.ValueSet valueSet = |
| (LinkedHashMultimap.ValueSet) multimap.backingMap().get("a"); |
| assertEquals(z, valueSet.size()); |
| assertFalse(Hashing.needsResizing(valueSet.size(), valueSet.hashTable.length, |
| LinkedHashMultimap.VALUE_SET_LOAD_FACTOR)); |
| } |
| } |
| |
| private Multimap<String, Integer> initializeMultimap5() { |
| Multimap<String, Integer> multimap = LinkedHashMultimap.create(); |
| multimap.put("foo", 5); |
| multimap.put("bar", 4); |
| multimap.put("foo", 3); |
| multimap.put("cow", 2); |
| multimap.put("bar", 1); |
| return multimap; |
| } |
| |
| public void testToString() { |
| Multimap<String, Integer> multimap = LinkedHashMultimap.create(); |
| multimap.put("foo", 3); |
| multimap.put("bar", 1); |
| multimap.putAll("foo", Arrays.asList(-1, 2, 4)); |
| multimap.putAll("bar", Arrays.asList(2, 3)); |
| multimap.put("foo", 1); |
| assertEquals("{foo=[3, -1, 2, 4, 1], bar=[1, 2, 3]}", |
| multimap.toString()); |
| } |
| |
| public void testOrderingReadOnly() { |
| Multimap<String, Integer> multimap = initializeMultimap5(); |
| assertOrderingReadOnly(multimap); |
| } |
| |
| public void testOrderingUnmodifiable() { |
| Multimap<String, Integer> multimap = initializeMultimap5(); |
| assertOrderingReadOnly(Multimaps.unmodifiableMultimap(multimap)); |
| } |
| |
| public void testOrderingSynchronized() { |
| Multimap<String, Integer> multimap = initializeMultimap5(); |
| assertOrderingReadOnly(Multimaps.synchronizedMultimap(multimap)); |
| } |
| |
| private void assertOrderingReadOnly(Multimap<String, Integer> multimap) { |
| assertThat(multimap.get("foo")).has().exactly(5, 3).inOrder(); |
| assertThat(multimap.get("bar")).has().exactly(4, 1).inOrder(); |
| assertThat(multimap.get("cow")).has().item(2); |
| |
| assertThat(multimap.keySet()).has().exactly("foo", "bar", "cow").inOrder(); |
| assertThat(multimap.values()).has().exactly(5, 4, 3, 2, 1).inOrder(); |
| |
| Iterator<Map.Entry<String, Integer>> entryIterator = |
| multimap.entries().iterator(); |
| assertEquals(Maps.immutableEntry("foo", 5), entryIterator.next()); |
| assertEquals(Maps.immutableEntry("bar", 4), entryIterator.next()); |
| assertEquals(Maps.immutableEntry("foo", 3), entryIterator.next()); |
| assertEquals(Maps.immutableEntry("cow", 2), entryIterator.next()); |
| assertEquals(Maps.immutableEntry("bar", 1), entryIterator.next()); |
| |
| Iterator<Map.Entry<String, Collection<Integer>>> collectionIterator = |
| multimap.asMap().entrySet().iterator(); |
| Map.Entry<String, Collection<Integer>> entry = collectionIterator.next(); |
| assertEquals("foo", entry.getKey()); |
| assertThat(entry.getValue()).has().exactly(5, 3).inOrder(); |
| entry = collectionIterator.next(); |
| assertEquals("bar", entry.getKey()); |
| assertThat(entry.getValue()).has().exactly(4, 1).inOrder(); |
| entry = collectionIterator.next(); |
| assertEquals("cow", entry.getKey()); |
| assertThat(entry.getValue()).has().item(2); |
| } |
| |
| public void testOrderingUpdates() { |
| Multimap<String, Integer> multimap = initializeMultimap5(); |
| |
| assertThat(multimap.replaceValues("foo", asList(6, 7))).has().exactly(5, 3).inOrder(); |
| assertThat(multimap.keySet()).has().exactly("foo", "bar", "cow").inOrder(); |
| assertThat(multimap.removeAll("foo")).has().exactly(6, 7).inOrder(); |
| assertThat(multimap.keySet()).has().exactly("bar", "cow").inOrder(); |
| assertTrue(multimap.remove("bar", 4)); |
| assertThat(multimap.keySet()).has().exactly("bar", "cow").inOrder(); |
| assertTrue(multimap.remove("bar", 1)); |
| assertThat(multimap.keySet()).has().item("cow"); |
| multimap.put("bar", 9); |
| assertThat(multimap.keySet()).has().exactly("cow", "bar").inOrder(); |
| } |
| |
| public void testToStringNullExact() { |
| Multimap<String, Integer> multimap = LinkedHashMultimap.create(); |
| |
| multimap.put("foo", 3); |
| multimap.put("foo", -1); |
| multimap.put(null, null); |
| multimap.put("bar", 1); |
| multimap.put("foo", 2); |
| multimap.put(null, 0); |
| multimap.put("bar", 2); |
| multimap.put("bar", null); |
| multimap.put("foo", null); |
| multimap.put("foo", 4); |
| multimap.put(null, -1); |
| multimap.put("bar", 3); |
| multimap.put("bar", 1); |
| multimap.put("foo", 1); |
| |
| assertEquals( |
| "{foo=[3, -1, 2, null, 4, 1], null=[null, 0, -1], bar=[1, 2, null, 3]}", |
| multimap.toString()); |
| } |
| |
| public void testPutMultimapOrdered() { |
| Multimap<String, Integer> multimap = LinkedHashMultimap.create(); |
| multimap.putAll(initializeMultimap5()); |
| assertOrderingReadOnly(multimap); |
| } |
| |
| public void testKeysToString_ordering() { |
| Multimap<String, Integer> multimap = initializeMultimap5(); |
| assertEquals("[foo x 2, bar x 2, cow]", multimap.keys().toString()); |
| } |
| |
| public void testCreate() { |
| LinkedHashMultimap<String, Integer> multimap = LinkedHashMultimap.create(); |
| multimap.put("foo", 1); |
| multimap.put("bar", 2); |
| multimap.put("foo", 3); |
| assertEquals(ImmutableSet.of(1, 3), multimap.get("foo")); |
| } |
| |
| public void testCreateFromMultimap() { |
| Multimap<String, Integer> multimap = LinkedHashMultimap.create(); |
| multimap.put("a", 1); |
| multimap.put("b", 2); |
| multimap.put("a", 3); |
| multimap.put("c", 4); |
| LinkedHashMultimap<String, Integer> copy = |
| LinkedHashMultimap.create(multimap); |
| new EqualsTester() |
| .addEqualityGroup(multimap, copy) |
| .testEquals(); |
| } |
| |
| public void testCreateFromSizes() { |
| LinkedHashMultimap<String, Integer> multimap |
| = LinkedHashMultimap.create(20, 15); |
| multimap.put("foo", 1); |
| multimap.put("bar", 2); |
| multimap.put("foo", 3); |
| assertEquals(ImmutableSet.of(1, 3), multimap.get("foo")); |
| } |
| |
| public void testCreateFromIllegalSizes() { |
| try { |
| LinkedHashMultimap.create(-20, 15); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| |
| try { |
| LinkedHashMultimap.create(20, -15); |
| fail(); |
| } catch (IllegalArgumentException expected) {} |
| } |
| } |
| |