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      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.testing.testers;
     18 
     19 import com.google.common.collect.testing.AbstractCollectionTester;
     20 
     21 /**
     22  * Tests {@link java.util.Collection#equals}.
     23  *
     24  * <p>This class is GWT compatible.
     25  *
     26  * @author George van den Driessche
     27  */
     28 public class CollectionEqualsTester<E> extends AbstractCollectionTester<E> {
     29   public void testEquals_self() {
     30     assertTrue("An Object should be equal to itself.",
     31         collection.equals(collection));
     32   }
     33 
     34   public void testEquals_null() {
     35     //noinspection ObjectEqualsNull
     36     assertFalse("An object should not be equal to null.",
     37         collection.equals(null));
     38   }
     39 
     40   public void testEquals_notACollection() {
     41     //noinspection EqualsBetweenInconvertibleTypes
     42     assertFalse("A Collection should never equal an "
     43         + "object that is not a Collection.",
     44         collection.equals("huh?"));
     45   }
     46 }