11d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2008 The Guava Authors 31d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 41d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Licensed under the Apache License, Version 2.0 (the "License"); 51d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * you may not use this file except in compliance with the License. 61d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * You may obtain a copy of the License at 71d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 81d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * http://www.apache.org/licenses/LICENSE-2.0 91d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unless required by applicable law or agreed to in writing, software 111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * distributed under the License is distributed on an "AS IS" BASIS, 121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * See the License for the specific language governing permissions and 141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * limitations under the License. 151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpackage com.google.common.collect.testing.testers; 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD; 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.features.CollectionFeature; 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * A generic JUnit test which tests offer operations on a queue. Can't be 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * invoked directly; please see 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * <p>This class is GWT compatible. 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Jared Levy 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert@SuppressWarnings("unchecked") // too many "unchecked generic array creations" 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class QueueOfferTester<E> extends AbstractQueueTester<E> { 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @CollectionFeature.Require(SUPPORTS_ADD) 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testOffer_supportedNotPresent() { 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue("offer(notPresent) should return true", 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getQueue().offer(samples.e3)); 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert expectAdded(samples.e3); 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @CollectionFeature.Require({SUPPORTS_ADD, ALLOWS_NULL_VALUES}) 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testOffer_nullSupported() { 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue("offer(null) should return true", getQueue().offer(null)); 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert expectAdded((E) null); 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @CollectionFeature.Require(value = SUPPORTS_ADD, absent = ALLOWS_NULL_VALUES) 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testOffer_nullUnsupported() { 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getQueue().offer(null); 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail("offer(null) should throw"); 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (NullPointerException expected) { 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert expectUnchanged(); 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert expectNullMissingWhenNullUnsupported( 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert "Should not contain null after unsupported offer(null)"); 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 60