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; 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static com.google.common.base.Preconditions.checkArgument; 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static java.util.Arrays.asList; 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.annotations.GwtCompatible; 237dd252788645e940eada959bdde927426e2531c9Paul Duffinimport com.google.common.annotations.GwtIncompatible; 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.SetTestSuiteBuilder; 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.TestStringSetGenerator; 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.features.CollectionFeature; 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.collect.testing.features.CollectionSize; 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport junit.framework.Test; 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport junit.framework.TestCase; 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport junit.framework.TestSuite; 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 330888a09821a98ac0680fad765217302858e70fa4Paul Duffinimport java.util.HashSet; 340888a09821a98ac0680fad765217302858e70fa4Paul Duffinimport java.util.Set; 350888a09821a98ac0680fad765217302858e70fa4Paul Duffin 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unit tests for {@link Sets#union}, {@link Sets#intersection} and 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * {@link Sets#difference}. 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Kevin Bourrillion 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 427dd252788645e940eada959bdde927426e2531c9Paul Duffin@GwtCompatible(emulated = true) 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class SetOperationsTest extends TestCase { 447dd252788645e940eada959bdde927426e2531c9Paul Duffin @GwtIncompatible("suite") 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public static Test suite() { 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert TestSuite suite = new TestSuite(); 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.union( 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.<String>newHashSet(), Sets.<String>newHashSet()); 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("empty U empty") 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ZERO, CollectionFeature.NONE, 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert checkArgument(elements.length == 1); 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.union( 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.<String>newHashSet(elements), Sets.newHashSet(elements)); 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("singleton U itself") 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ONE, CollectionFeature.ALLOWS_NULL_VALUES) 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.union( 731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.<String>newHashSet(), Sets.newHashSet(elements)); 741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("empty U set") 771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ONE, CollectionSize.SEVERAL, 781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.union( 841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet(elements), Sets.<String>newHashSet()); 851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("set U empty") 881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ONE, CollectionSize.SEVERAL, 891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert checkArgument(elements.length == 3); 951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // Put the sets in different orders for the hell of it 961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.union( 971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newLinkedHashSet(asList(elements)), 981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newLinkedHashSet( 991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert asList(elements[1], elements[0], elements[2]))); 1001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1021d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("set U itself") 1031d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.SEVERAL, 1041d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 1051d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1061d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1071d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1081d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 1091d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert checkArgument(elements.length == 3); 1101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.union( 1111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet(elements[0]), 1121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet(elements[1], elements[2])); 1131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("union of disjoint") 1161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.SEVERAL, 1171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 1181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 1221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.union( 1231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.<String>newHashSet(elements[0], elements[1]), 1241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet(elements[1], elements[2])); 1251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("venn") 1281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.SEVERAL, 1291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 1301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 1341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.intersection( 1351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.<String>newHashSet(), Sets.<String>newHashSet()); 1361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("empty & empty") 1391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ZERO, CollectionFeature.NONE, 1401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 1411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 1451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.intersection( 1461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.<String>newHashSet(), Sets.newHashSet((String) null)); 1471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("empty & singleton") 1501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ZERO, CollectionFeature.NONE, 1511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 1521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 1561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.intersection( 1571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet("a", "b"), Sets.newHashSet("c", "d")); 1581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("intersection of disjoint") 1611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ZERO, CollectionFeature.NONE, 1621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 1631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 1671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.intersection( 1681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet(elements), Sets.newHashSet(elements)); 1691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("set & itself") 1721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ONE, CollectionSize.SEVERAL, 1731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 1741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 1781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.intersection( 1791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet("a", elements[0], "b"), 1801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet("c", elements[0], "d")); 1811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("intersection with overlap of one") 1841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ONE, CollectionFeature.ALLOWS_NULL_VALUES) 1851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 1891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.difference( 1901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.<String>newHashSet(), Sets.<String>newHashSet()); 1911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 1931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("empty - empty") 1941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ZERO, CollectionFeature.NONE, 1951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 1961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 1971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 1991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 2001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.difference(Sets.newHashSet("a"), Sets.newHashSet("a")); 2011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2021d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 2031d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("singleton - itself") 2041d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ZERO, CollectionFeature.NONE, 2051d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 2061d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 2071d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2081d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 2091d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 2101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> set = Sets.newHashSet("b", "c"); 2111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> other = Sets.newHashSet("a", "b", "c", "d"); 2121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.difference(set, other); 2131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 2151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("set - superset") 2161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ZERO, CollectionFeature.NONE, 2171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 2181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 2191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 2211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 2221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> set = Sets.newHashSet(elements); 2231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> other = Sets.newHashSet("wz", "xq"); 2241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert set.addAll(other); 2251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert other.add("pq"); 2261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.difference(set, other); 2271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 2291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("set - set") 2301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ANY, CollectionFeature.ALLOWS_NULL_VALUES, 2311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 2321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 2331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 2351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 2361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.difference( 2371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.newHashSet(elements), Sets.newHashSet()); 2381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 2401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("set - empty") 2411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ONE, CollectionSize.SEVERAL, 2421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CollectionFeature.ALLOWS_NULL_VALUES) 2431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 2441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() { 2461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override protected Set<String> create(String[] elements) { 2471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return Sets.difference( 2481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Sets.<String>newHashSet(elements), Sets.newHashSet("xx", "xq")); 2491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert }) 2511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .named("set - disjoint") 2521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .withFeatures(CollectionSize.ANY, CollectionFeature.ALLOWS_NULL_VALUES) 2531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .createTestSuite()); 2541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert suite.addTestSuite(MoreTests.class); 2561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return suite; 2571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public static class MoreTests extends TestCase { 2601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> friends; 2611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> enemies; 2621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public void setUp() { 2641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert friends = Sets.newHashSet("Tom", "Joe", "Dave"); 2651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert enemies = Sets.newHashSet("Dick", "Harry", "Tom"); 2661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testUnion() { 2691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> all = Sets.union(friends, enemies); 2701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(5, all.size()); 2711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ImmutableSet<String> immut = Sets.union(friends, enemies).immutableCopy(); 2731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert HashSet<String> mut 2741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert = Sets.union(friends, enemies).copyInto(new HashSet<String>()); 2751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert enemies.add("Buck"); 2771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(6, all.size()); 2781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(5, immut.size()); 2791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(5, mut.size()); 2801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testIntersection() { 2831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> friends = Sets.newHashSet("Tom", "Joe", "Dave"); 2841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> enemies = Sets.newHashSet("Dick", "Harry", "Tom"); 2851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> frenemies = Sets.intersection(friends, enemies); 2871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(1, frenemies.size()); 2881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ImmutableSet<String> immut 2901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert = Sets.intersection(friends, enemies).immutableCopy(); 2911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert HashSet<String> mut 2921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert = Sets.intersection(friends, enemies).copyInto(new HashSet<String>()); 2931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert enemies.add("Joe"); 2951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(2, frenemies.size()); 2961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(1, immut.size()); 2971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(1, mut.size()); 2981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testDifference() { 3011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> friends = Sets.newHashSet("Tom", "Joe", "Dave"); 3021d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> enemies = Sets.newHashSet("Dick", "Harry", "Tom"); 3031d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3041d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> goodFriends = Sets.difference(friends, enemies); 3051d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(2, goodFriends.size()); 3061d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3071d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ImmutableSet<String> immut 3081d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert = Sets.difference(friends, enemies).immutableCopy(); 3091d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert HashSet<String> mut 3101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert = Sets.difference(friends, enemies).copyInto(new HashSet<String>()); 3111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert enemies.add("Dave"); 3131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(1, goodFriends.size()); 3141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(2, immut.size()); 3151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(2, mut.size()); 3161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 3171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testSymmetricDifference() { 3191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> friends = Sets.newHashSet("Tom", "Joe", "Dave"); 3201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> enemies = Sets.newHashSet("Dick", "Harry", "Tom"); 3211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> symmetricDifferenceFriendsFirst = Sets.symmetricDifference( 3231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert friends, enemies); 3241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(4, symmetricDifferenceFriendsFirst.size()); 3251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Set<String> symmetricDifferenceEnemiesFirst = Sets.symmetricDifference( 3271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert enemies, friends); 3281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(4, symmetricDifferenceEnemiesFirst.size()); 3291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(symmetricDifferenceFriendsFirst, 3311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert symmetricDifferenceEnemiesFirst); 3321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ImmutableSet<String> immut 3341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert = Sets.symmetricDifference(friends, enemies).immutableCopy(); 3351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert HashSet<String> mut = Sets.symmetricDifference(friends, enemies) 3361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert .copyInto(new HashSet<String>()); 3371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert enemies.add("Dave"); 3391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(3, symmetricDifferenceFriendsFirst.size()); 3401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(4, immut.size()); 3411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(4, mut.size()); 3421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 3431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert immut = Sets.symmetricDifference(enemies, friends).immutableCopy(); 3441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert mut = Sets.symmetricDifference(enemies, friends). 3451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert copyInto(new HashSet<String>()); 3461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert friends.add("Harry"); 3471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(2, symmetricDifferenceEnemiesFirst.size()); 3481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(3, immut.size()); 3491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(3, mut.size()); 3501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 3511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 3521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 353