Coverage Summary for Class: QueueElementTester (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 java.util.NoSuchElementException;
28 import org.junit.Ignore;
29 
30 /**
31  * A generic JUnit test which tests {@code element()} operations on a queue. Can't be invoked
32  * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
33  *
34  * @author Jared Levy
35  */
36 @GwtCompatible
37 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
38 public class QueueElementTester<E> extends AbstractQueueTester<E> {
39   @CollectionSize.Require(ZERO)
40   public void testElement_empty() {
41     try {
42       getQueue().element();
43       fail("emptyQueue.element() should throw");
44     } catch (NoSuchElementException expected) {
45     }
46     expectUnchanged();
47   }
48 
49   @CollectionSize.Require(ONE)
50   public void testElement_size1() {
51     assertEquals("size1Queue.element() should return first element", e0(), getQueue().element());
52     expectUnchanged();
53   }
54 
55   @CollectionFeature.Require(KNOWN_ORDER)
56   @CollectionSize.Require(SEVERAL)
57   public void testElement_sizeMany() {
58     assertEquals("sizeManyQueue.element() should return first element", e0(), getQueue().element());
59     expectUnchanged();
60   }
61 }