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

1 /*
2  * Copyright (C) 2008 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 static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER;
20 import static com.google.common.collect.testing.features.CollectionSize.ONE;
21 import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
22 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
23 
24 import com.google.common.annotations.GwtCompatible;
25 import com.google.common.collect.testing.features.CollectionFeature;
26 import com.google.common.collect.testing.features.CollectionSize;
27 import org.junit.Ignore;
28 
29 /**
30  * A generic JUnit test which tests {@code peek()} operations on a queue. Can't be invoked directly;
31  * please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
32  *
33  * @author Jared Levy
34  */
35 @GwtCompatible
36 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
37 public class QueuePeekTester<E> extends AbstractQueueTester<E> {
38   @CollectionSize.Require(ZERO)
39   public void testPeek_empty() {
40     assertNull("emptyQueue.peek() should return null", getQueue().peek());
41     expectUnchanged();
42   }
43 
44   @CollectionSize.Require(ONE)
45   public void testPeek_size1() {
46     assertEquals("size1Queue.peek() should return first element", e0(), getQueue().peek());
47     expectUnchanged();
48   }
49 
50   @CollectionFeature.Require(KNOWN_ORDER)
51   @CollectionSize.Require(SEVERAL)
52   public void testPeek_sizeMany() {
53     assertEquals("sizeManyQueue.peek() should return first element", e0(), getQueue().peek());
54     expectUnchanged();
55   }
56 }