1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @bug 8017231 8020977 8054221 27 * @summary test StringJoiner::merge 28 * @run testng MergeTest 29 */ 30 31 package test.java.util.StringJoiner; 32 33 import java.util.StringJoiner; 34 import java.util.stream.Stream; 35 import org.testng.annotations.Test; 36 import static org.testng.Assert.assertEquals; 37 import static org.testng.Assert.fail; 38 39 @Test 40 public class MergeTest { 41 private static final String[] PREFIXES = {"", "{", "@#$%"}; 42 private static final String[] SUFFIXES = {"", "}", "*&%$"}; 43 44 private static class Fixes { 45 public String pre0, suf0; 46 public String pre1, suf1; Fixes(String prefix0, String suffix0, String prefix1, String suffix1)47 public Fixes(String prefix0, String suffix0, 48 String prefix1, String suffix1) { 49 this.pre0 = prefix0; 50 this.suf0 = suffix0; 51 this.pre1 = prefix1; 52 this.suf1 = suffix1; 53 } 54 } 55 fixesStream()56 private static Stream<Fixes> fixesStream() { 57 Stream.Builder<Fixes> builder = Stream.builder(); 58 for (final String prefix0 : PREFIXES) { 59 for (final String suffix0 : SUFFIXES) { 60 for (final String prefix1 : PREFIXES) { 61 for (final String suffix1 : SUFFIXES) { 62 builder.accept(new Fixes(prefix0, suffix0, 63 prefix1, suffix1)); 64 } 65 } 66 } 67 } 68 return builder.build(); 69 } 70 71 @Test(expectedExceptions = {NullPointerException.class}) testNull()72 public void testNull() { 73 StringJoiner sj = new StringJoiner(",", "{", "}"); 74 sj.merge(null); 75 } 76 testSimple()77 public void testSimple() { 78 fixesStream().forEach(fixes -> { 79 StringJoiner sj = new StringJoiner(",", fixes.pre0, fixes.suf0); 80 StringJoiner other = new StringJoiner(",", fixes.pre1, fixes.suf1); 81 Stream.of("a", "b", "c").forEachOrdered(sj::add); 82 Stream.of("d", "e", "f").forEachOrdered(other::add); 83 84 sj.merge(other); 85 assertEquals(sj.toString(), fixes.pre0 + "a,b,c,d,e,f" + fixes.suf0); 86 }); 87 } 88 testEmptyOther()89 public void testEmptyOther() { 90 fixesStream().forEach(fixes -> { 91 StringJoiner sj = new StringJoiner(",", fixes.pre0, fixes.suf0); 92 StringJoiner other = new StringJoiner(",", fixes.pre1, fixes.suf1); 93 Stream.of("a", "b", "c").forEachOrdered(sj::add); 94 95 sj.merge(other); 96 assertEquals(sj.toString(), fixes.pre0 + "a,b,c" + fixes.suf0); 97 98 other.setEmptyValue("EMPTY"); 99 sj.merge(other); 100 assertEquals(sj.toString(), fixes.pre0 + "a,b,c" + fixes.suf0); 101 }); 102 } 103 testEmptyThis()104 public void testEmptyThis() { 105 fixesStream().forEach(fixes -> { 106 StringJoiner sj = new StringJoiner(",", fixes.pre0, fixes.suf0); 107 StringJoiner other = new StringJoiner(":", fixes.pre1, fixes.suf1); 108 Stream.of("d", "e", "f").forEachOrdered(other::add); 109 110 sj.merge(other); 111 assertEquals(sj.toString(), fixes.pre0 + "d:e:f" + fixes.suf0); 112 113 sj = new StringJoiner(",", fixes.pre0, fixes.suf0).setEmptyValue("EMPTY"); 114 assertEquals(sj.toString(), "EMPTY"); 115 sj.merge(other); 116 assertEquals(sj.toString(), fixes.pre0 + "d:e:f" + fixes.suf0); 117 }); 118 } 119 testEmptyBoth()120 public void testEmptyBoth() { 121 fixesStream().forEach(fixes -> { 122 StringJoiner sj = new StringJoiner(",", fixes.pre0, fixes.suf0); 123 StringJoiner other = new StringJoiner(":", fixes.pre1, fixes.suf1); 124 125 sj.merge(other); 126 assertEquals(sj.toString(), fixes.pre0 + fixes.suf0); 127 128 other.setEmptyValue("NOTHING"); 129 sj.merge(other); 130 assertEquals(sj.toString(), fixes.pre0 + fixes.suf0); 131 132 sj = new StringJoiner(",", fixes.pre0, fixes.suf0).setEmptyValue("EMPTY"); 133 assertEquals(sj.toString(), "EMPTY"); 134 sj.merge(other); 135 assertEquals(sj.toString(), "EMPTY"); 136 }); 137 } 138 testCascadeEmpty()139 public void testCascadeEmpty() { 140 fixesStream().forEach(fixes -> { 141 StringJoiner sj = new StringJoiner(",", fixes.pre0, fixes.suf0); 142 StringJoiner o1 = new StringJoiner(":", fixes.pre1, fixes.suf1).setEmptyValue("Empty1"); 143 StringJoiner o2 = new StringJoiner(",", "<", ">").setEmptyValue("Empty2"); 144 145 o1.merge(o2); 146 assertEquals(o1.toString(), "Empty1"); 147 148 sj.merge(o1); 149 assertEquals(sj.toString(), fixes.pre0 + fixes.suf0); 150 }); 151 } 152 testDelimiter()153 public void testDelimiter() { 154 fixesStream().forEach(fixes -> { 155 StringJoiner sj = new StringJoiner(",", fixes.pre0, fixes.suf0); 156 StringJoiner other = new StringJoiner(":", fixes.pre1, fixes.suf1); 157 Stream.of("a", "b", "c").forEachOrdered(sj::add); 158 Stream.of("d", "e", "f").forEachOrdered(other::add); 159 160 sj.merge(other); 161 assertEquals(sj.toString(), fixes.pre0 + "a,b,c,d:e:f" + fixes.suf0); 162 }); 163 } 164 testMergeSelf()165 public void testMergeSelf() { 166 fixesStream().forEach(fixes -> { 167 final StringJoiner sj = new StringJoiner(",", fixes.pre0, fixes.suf0).add("a").add("b"); 168 assertEquals(sj.merge(sj).toString(), fixes.pre0 + "a,b,a,b" + fixes.suf0); 169 assertEquals(sj.merge(sj).toString(), fixes.pre0 + "a,b,a,b,a,b,a,b" + fixes.suf0); 170 }); 171 } 172 } 173