Home | History | Annotate | Download | only in collect 
      1 /*
      2  * Copyright (C) 2007 The Guava Authors
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.google.common.collect;
     18 
     19 import com.google.common.annotations.GwtCompatible;
     20 import com.google.common.annotations.GwtIncompatible;
     21 import com.google.common.testing.SerializableTester;
     22 
     23 import java.io.Serializable;
     24 import java.util.Arrays;
     25 
     26 /**
     27  * Unit test for {@link HashMultiset}.
     28  *
     29  * @author Kevin Bourrillion
     30  * @author Jared Levy
     31  */
     32 @GwtCompatible(emulated = true)
     33 public class HashMultisetTest extends AbstractMultisetTest {
     34   @Override protected <E> Multiset<E> create() {
     35     return HashMultiset.create();
     36   }
     37 
     38   public void testCreate() {
     39     Multiset<String> multiset = HashMultiset.create();
     40     multiset.add("foo", 2);
     41     multiset.add("bar");
     42     assertEquals(3, multiset.size());
     43     assertEquals(2, multiset.count("foo"));
     44   }
     45 
     46   public void testCreateWithSize() {
     47     Multiset<String> multiset = HashMultiset.create(50);
     48     multiset.add("foo", 2);
     49     multiset.add("bar");
     50     assertEquals(3, multiset.size());
     51     assertEquals(2, multiset.count("foo"));
     52   }
     53 
     54   public void testCreateFromIterable() {
     55     Multiset<String> multiset
     56         = HashMultiset.create(Arrays.asList("foo", "bar", "foo"));
     57     assertEquals(3, multiset.size());
     58     assertEquals(2, multiset.count("foo"));
     59   }
     60 
     61   @GwtIncompatible("SerializableTester")
     62   public void testSerializationContainingSelf() {
     63     Multiset<Multiset<?>> multiset = HashMultiset.create();
     64     multiset.add(multiset, 2);
     65     Multiset<Multiset<?>> copy = SerializableTester.reserialize(multiset);
     66     assertEquals(2, copy.size());
     67     assertSame(copy, copy.iterator().next());
     68   }
     69 
     70   @GwtIncompatible("Only used by @GwtIncompatible code")
     71   private static class MultisetHolder implements Serializable {
     72     public Multiset<?> member;
     73     MultisetHolder(Multiset<?> multiset) {
     74       this.member = multiset;
     75     }
     76     private static final long serialVersionUID = 1L;
     77   }
     78 
     79   @GwtIncompatible("SerializableTester")
     80   public void testSerializationIndirectSelfReference() {
     81     Multiset<MultisetHolder> multiset = HashMultiset.create();
     82     MultisetHolder holder = new MultisetHolder(multiset);
     83     multiset.add(holder, 2);
     84     Multiset<MultisetHolder> copy = SerializableTester.reserialize(multiset);
     85     assertEquals(2, copy.size());
     86     assertSame(copy, copy.iterator().next().member);
     87   }
     88 
     89   /*
     90    * The behavior of toString() and iteration is tested by LinkedHashMultiset,
     91    * which shares a lot of code with HashMultiset and has deterministic
     92    * iteration order.
     93    */
     94 
     95   /**
     96    * This test fails with Java 6, preventing us from running
     97    * NullPointerTester on multisets.
     98   public void testAnnotations() throws Exception {
     99     Method method = HashMultiset.class.getDeclaredMethod(
    100         "add", Object.class, int.class);
    101     assertTrue(method.getParameterAnnotations()[0].length > 0);
    102   }
    103   */
    104 
    105   @Override
    106   @GwtIncompatible(
    107       "http://code.google.com/p/google-web-toolkit/issues/detail?id=3421")
    108   public void testEntryAfterRemove() {
    109     super.testEntryAfterRemove();
    110   }
    111 
    112   @Override
    113   @GwtIncompatible(
    114       "http://code.google.com/p/google-web-toolkit/issues/detail?id=3421")
    115   public void testEntryAfterClear() {
    116     super.testEntryAfterClear();
    117   }
    118 
    119   @Override
    120   @GwtIncompatible(
    121       "http://code.google.com/p/google-web-toolkit/issues/detail?id=3421")
    122   public void testEntryAfterEntrySetClear() {
    123     super.testEntryAfterEntrySetClear();
    124   }
    125 
    126   @Override
    127   @GwtIncompatible(
    128       "http://code.google.com/p/google-web-toolkit/issues/detail?id=3421")
    129   public void testEntryAfterEntrySetIteratorRemove() {
    130     super.testEntryAfterEntrySetIteratorRemove();
    131   }
    132 
    133   @Override
    134   @GwtIncompatible(
    135       "http://code.google.com/p/google-web-toolkit/issues/detail?id=3421")
    136   public void testEntryAfterElementSetIteratorRemove() {
    137     super.testEntryAfterElementSetIteratorRemove();
    138   }
    139 }
    140