Coverage Summary for Class: UnhashableObject (com.google.common.collect.testing)

1 /*
2  * Copyright (C) 2009 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.testing;
18 
19 import com.google.common.annotations.GwtCompatible;
20 
21 /**
22  * An unhashable object to be used in testing as values in our collections.
23  *
24  * @author Regina O'Dell
25  */
26 @GwtCompatible
27 public class UnhashableObject implements Comparable<UnhashableObject> {
28   private final int value;
29 
30   public UnhashableObject(int value) {
31     this.value = value;
32   }
33 
34   @Override
35   public boolean equals(Object object) {
36     if (object instanceof UnhashableObject) {
37       UnhashableObject that = (UnhashableObject) object;
38       return this.value == that.value;
39     }
40     return false;
41   }
42 
43   @Override
44   public int hashCode() {
45     throw new UnsupportedOperationException();
46   }
47 
48   // needed because otherwise Object.toString() calls hashCode()
49   @Override
50   public String toString() {
51     return "DontHashMe" + value;
52   }
53 
54   @Override
55   public int compareTo(UnhashableObject o) {
56     return (this.value < o.value) ? -1 : (this.value > o.value) ? 1 : 0;
57   }
58 }