| /* |
| * Copyright (C) 2008 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.collect.testing.testers; |
| |
| import static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER; |
| import static com.google.common.collect.testing.features.CollectionSize.ONE; |
| import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; |
| import static com.google.common.collect.testing.features.CollectionSize.ZERO; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.collect.testing.features.CollectionFeature; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import org.junit.Ignore; |
| |
| /** |
| * A generic JUnit test which tests {@code peek()} operations on a queue. Can't be invoked directly; |
| * please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. |
| * |
| * @author Jared Levy |
| */ |
| @GwtCompatible |
| @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. |
| public class QueuePeekTester<E> extends AbstractQueueTester<E> { |
| @CollectionSize.Require(ZERO) |
| public void testPeek_empty() { |
| assertNull("emptyQueue.peek() should return null", getQueue().peek()); |
| expectUnchanged(); |
| } |
| |
| @CollectionSize.Require(ONE) |
| public void testPeek_size1() { |
| assertEquals("size1Queue.peek() should return first element", e0(), getQueue().peek()); |
| expectUnchanged(); |
| } |
| |
| @CollectionFeature.Require(KNOWN_ORDER) |
| @CollectionSize.Require(SEVERAL) |
| public void testPeek_sizeMany() { |
| assertEquals("sizeManyQueue.peek() should return first element", e0(), getQueue().peek()); |
| expectUnchanged(); |
| } |
| } |