Java
60 строк · 2.4 Кб
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
17package com.google.common.collect.testing.testers;
18
19import static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER;
20import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE;
21import static com.google.common.collect.testing.features.CollectionSize.ONE;
22import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
23import static com.google.common.collect.testing.features.CollectionSize.ZERO;
24
25import com.google.common.annotations.GwtCompatible;
26import com.google.common.collect.testing.features.CollectionFeature;
27import com.google.common.collect.testing.features.CollectionSize;
28import org.junit.Ignore;
29
30/**
31* A generic JUnit test which tests {@code poll()} operations on a queue. Can't be invoked directly;
32* 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@SuppressWarnings("JUnit4ClassUsedInJUnit3")
39public class QueuePollTester<E> extends AbstractQueueTester<E> {
40@CollectionFeature.Require(SUPPORTS_REMOVE)
41@CollectionSize.Require(ZERO)
42public void testPoll_empty() {
43assertNull("emptyQueue.poll() should return null", getQueue().poll());
44expectUnchanged();
45}
46
47@CollectionFeature.Require(SUPPORTS_REMOVE)
48@CollectionSize.Require(ONE)
49public void testPoll_size1() {
50assertEquals("size1Queue.poll() should return first element", e0(), getQueue().poll());
51expectMissing(e0());
52}
53
54@CollectionFeature.Require({KNOWN_ORDER, SUPPORTS_REMOVE})
55@CollectionSize.Require(SEVERAL)
56public void testPoll_sizeMany() {
57assertEquals("sizeManyQueue.poll() should return first element", e0(), getQueue().poll());
58expectMissing(e0());
59}
60}
61