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/*
* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 6840246 6559590
* @summary test String.split()
* @key randomness
*/
import java.util.Arrays;
import java.util.Random;
import java.util.regex.*;
public class Split {
public static void main(String[] args) throws Exception {
String source = "0123456789";
for (int limit=-2; limit<3; limit++) {
for (int x=0; x<10; x++) {
String[] result = source.split(Integer.toString(x), limit);
int expectedLength = limit < 1 ? 2 : limit;
if ((limit == 0) && (x == 9)) {
// expected dropping of ""
if (result.length != 1)
throw new RuntimeException("String.split failure 1");
if (!result[0].equals("012345678")) {
throw new RuntimeException("String.split failure 2");
}
} else {
if (result.length != expectedLength) {
throw new RuntimeException("String.split failure 3");
}
if (!result[0].equals(source.substring(0,x))) {
if (limit != 1) {
throw new RuntimeException(
"String.split failure 4");
} else {
if (!result[0].equals(source.substring(0,10))) {
throw new RuntimeException(
"String.split failure 10");
}
}
}
if (expectedLength > 1) { // Check segment 2
if (!result[1].equals(source.substring(x+1,10)))
throw new RuntimeException("String.split failure 5");
}
}
}
}
// Check the case for no match found
for (int limit=-2; limit<3; limit++) {
String[] result = source.split("e", limit);
if (result.length != 1)
throw new RuntimeException("String.split failure 6");
if (!result[0].equals(source))
throw new RuntimeException("String.split failure 7");
}
// Check the case for limit == 0, source = "";
// split() now returns 0-length for empty source "" see #6559590
source = "";
String[] result = source.split("e", 0);
if (result.length != 1)
throw new RuntimeException("String.split failure 8");
if (!result[0].equals(source))
throw new RuntimeException("String.split failure 9");
// check fastpath of String.split()
source = "0123456789abcdefgABCDEFG";
Random r = new Random();
for (boolean doEscape: new boolean[] {false, true}) {
for (int cp = 0; cp < 0x11000; cp++) {
Pattern p = null;
String regex = new String(Character.toChars(cp));
if (doEscape)
regex = "\\" + regex;
try {
p = Pattern.compile(regex);
} catch (PatternSyntaxException pse) {
// illegal syntax
try {
"abc".split(regex);
} catch (PatternSyntaxException pse0) {
continue;
}
throw new RuntimeException("String.split failure 11");
}
int off = r.nextInt(source.length());
String[] srcStrs = new String[] {
"",
source,
regex + source,
source + regex,
source.substring(0, 3)
+ regex + source.substring(3, 9)
+ regex + source.substring(9, 15)
+ regex + source.substring(15),
source.substring(0, off) + regex + source.substring(off)
};
for (String src: srcStrs) {
for (int limit=-2; limit<3; limit++) {
if (!Arrays.equals(src.split(regex, limit),
p.split(src, limit)))
throw new RuntimeException("String.split failure 12");
}
}
}
}
}
}
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