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.CollectionFeature.SUPPORTS_REMOVE; 21 import static com.google.common.collect.testing.features.CollectionSize.ONE; 22 import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; 23 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 24 25 import com.google.common.annotations.GwtCompatible; 26 import com.google.common.collect.testing.features.CollectionFeature; 27 import com.google.common.collect.testing.features.CollectionSize; 28 29 import java.util.NoSuchElementException; 30 31 /** 32 * A generic JUnit test which tests {@code remove()} operations on a queue. 33 * Can't be invoked directly; please see 34 * {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 35 * 36 * @author Jared Levy 37 */ 38 @SuppressWarnings("unchecked") // too many "unchecked generic array creations" 39 @GwtCompatible 40 public class QueueRemoveTester<E> extends AbstractQueueTester<E> { 41 @CollectionFeature.Require(SUPPORTS_REMOVE) 42 @CollectionSize.Require(ZERO) testRemove_empty()43 public void testRemove_empty() { 44 try { 45 getQueue().remove(); 46 fail("emptyQueue.remove() should throw"); 47 } catch (NoSuchElementException expected) {} 48 expectUnchanged(); 49 } 50 51 @CollectionFeature.Require(SUPPORTS_REMOVE) 52 @CollectionSize.Require(ONE) testRemove_size1()53 public void testRemove_size1() { 54 assertEquals("size1Queue.remove() should return first element", 55 samples.e0, getQueue().remove()); 56 expectMissing(samples.e0); 57 } 58 59 @CollectionFeature.Require({KNOWN_ORDER, SUPPORTS_REMOVE}) 60 @CollectionSize.Require(SEVERAL) testRemove_sizeMany()61 public void testRemove_sizeMany() { 62 assertEquals("sizeManyQueue.remove() should return first element", 63 samples.e0, getQueue().remove()); 64 expectMissing(samples.e0); 65 } 66 } 67