1 /* 2 * Copyright (c) 2000, 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 6840246 6559590 27 * @summary test String.split() 28 */ 29 import java.util.Arrays; 30 import java.util.Random; 31 import java.util.regex.*; 32 33 public class Split { 34 35 public static void main(String[] args) throws Exception { 36 String source = "0123456789"; 37 38 for (int limit=-2; limit<3; limit++) { 39 for (int x=0; x<10; x++) { 40 String[] result = source.split(Integer.toString(x), limit); 41 int expectedLength = limit < 1 ? 2 : limit; 42 43 if ((limit == 0) && (x == 9)) { 44 // expected dropping of "" 45 if (result.length != 1) 46 throw new RuntimeException("String.split failure 1"); 47 if (!result[0].equals("012345678")) { 48 throw new RuntimeException("String.split failure 2"); 49 } 50 } else { 51 if (result.length != expectedLength) { 52 throw new RuntimeException("String.split failure 3"); 53 } 54 if (!result[0].equals(source.substring(0,x))) { 55 if (limit != 1) { 56 throw new RuntimeException( 57 "String.split failure 4"); 58 } else { 59 if (!result[0].equals(source.substring(0,10))) { 60 throw new RuntimeException( 61 "String.split failure 10"); 62 } 63 } 64 } 65 if (expectedLength > 1) { // Check segment 2 66 if (!result[1].equals(source.substring(x+1,10))) 67 throw new RuntimeException("String.split failure 5"); 68 } 69 } 70 } 71 } 72 // Check the case for no match found 73 for (int limit=-2; limit<3; limit++) { 74 String[] result = source.split("e", limit); 75 if (result.length != 1) 76 throw new RuntimeException("String.split failure 6"); 77 if (!result[0].equals(source)) 78 throw new RuntimeException("String.split failure 7"); 79 } 80 // Check the case for limit == 0, source = ""; 81 // split() now returns 0-length for empty source "" see #6559590 82 source = ""; 83 String[] result = source.split("e", 0); 84 if (result.length != 1) 85 throw new RuntimeException("String.split failure 8"); 86 if (!result[0].equals(source)) 87 throw new RuntimeException("String.split failure 9"); 88 89 // check fastpath of String.split() 90 source = "0123456789abcdefgABCDEFG"; 91 Random r = new Random(); 92 93 for (boolean doEscape: new boolean[] {false, true}) { 94 for (int cp = 0; cp < 0x11000; cp++) { 95 Pattern p = null; 96 String regex = new String(Character.toChars(cp)); 97 if (doEscape) 98 regex = "\\" + regex; 99 try { 100 p = Pattern.compile(regex); 101 } catch (PatternSyntaxException pse) { 102 // illegal syntax 103 try { 104 "abc".split(regex); 105 } catch (PatternSyntaxException pse0) { 106 continue; 107 } 108 throw new RuntimeException("String.split failure 11"); 109 } 110 int off = r.nextInt(source.length()); 111 String[] srcStrs = new String[] { 112 "", 113 source, 114 regex + source, 115 source + regex, 116 source.substring(0, 3) 117 + regex + source.substring(3, 9) 118 + regex + source.substring(9, 15) 119 + regex + source.substring(15), 120 source.substring(0, off) + regex + source.substring(off) 121 }; 122 for (String src: srcStrs) { 123 for (int limit=-2; limit<3; limit++) { 124 if (!Arrays.equals(src.split(regex, limit), 125 p.split(src, limit))) 126 throw new RuntimeException("String.split failure 12"); 127 } 128 } 129 } 130 } 131 } 132 }