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 Bringert 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.Helpers; 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.MinimalSet; 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.features.CollectionFeature; 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.features.CollectionSize; 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.util.Collection; 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.util.Set; 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Tests {@link java.util.Set#equals}. 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * <p>This class is GWT compatible. 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author George van den Driessche 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class SetEqualsTester<E> extends AbstractSetTester<E> { 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testEquals_otherSetWithSameElements() { 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue( 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert "A Set should equal any other Set containing the same elements.", 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getSet().equals(MinimalSet.from(getSampleElements()))); 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @CollectionSize.Require(absent = CollectionSize.ZERO) 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testEquals_otherSetWithDifferentElements() { 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Collection<E> elements = getSampleElements(getNumElements() - 1); 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert elements.add(getSubjectGenerator().samples().e3); 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse( 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert "A Set should not equal another Set containing different elements.", 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getSet().equals(MinimalSet.from(elements)) 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ); 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @CollectionSize.Require(absent = CollectionSize.ZERO) 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @CollectionFeature.Require(ALLOWS_NULL_VALUES) 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testEquals_containingNull() { 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Collection<E> elements = getSampleElements(getNumElements() - 1); 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert elements.add(null); 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert collection = getSubjectGenerator().create(elements.toArray()); 611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue("A Set should equal any other Set containing the same elements," 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert + " even if some elements are null.", 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getSet().equals(MinimalSet.from(elements))); 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @CollectionSize.Require(absent = CollectionSize.ZERO) 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testEquals_otherContainsNull() { 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Collection<E> elements = getSampleElements(getNumElements() - 1); 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert elements.add(null); 701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<E> other = MinimalSet.from(elements); 711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse( 731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert "Two Sets should not be equal if exactly one of them contains null.", 741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getSet().equals(other)); 751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @CollectionSize.Require(absent = CollectionSize.ZERO) 781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testEquals_smallerSet() { 791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Collection<E> fewerElements = getSampleElements(getNumElements() - 1); 801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse("Sets of different sizes should not be equal.", 811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getSet().equals(MinimalSet.from(fewerElements))); 821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testEquals_largerSet() { 851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Collection<E> moreElements = getSampleElements(getNumElements() + 1); 861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse("Sets of different sizes should not be equal.", 871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getSet().equals(MinimalSet.from(moreElements))); 881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testEquals_list() { 911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse("A List should never equal a Set.", 921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert getSet().equals(Helpers.copyToList(getSet()))); 931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 95