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/*
* Copyright (c) 2018, 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.
*/
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
/**
* @test
* @summary Basic strip, stripLeading, stripTrailing functionality
* @bug 8200377
* @run main/othervm Strip
*/
public class Strip {
public static void main(String... arg) {
testStrip();
testWhitespace();
}
/*
* Test basic stripping routines
*/
static void testStrip() {
equal(" abc ".strip(), "abc");
equal(" abc ".stripLeading(), "abc ");
equal(" abc ".stripTrailing(), " abc");
equal(" abc\u2022 ".strip(), "abc\u2022");
equal(" abc\u2022 ".stripLeading(), "abc\u2022 ");
equal(" abc\u2022 ".stripTrailing(), " abc\u2022");
equal("".strip(), "");
equal("".stripLeading(), "");
equal("".stripTrailing(), "");
equal("\b".strip(), "\b");
equal("\b".stripLeading(), "\b");
equal("\b".stripTrailing(), "\b");
}
/*
* Test full whitespace range
*/
static void testWhitespace() {
StringBuilder sb = new StringBuilder(64);
IntStream.range(1, 0xFFFF).filter(c -> Character.isWhitespace(c))
.forEach(c -> sb.append((char)c));
String whiteSpace = sb.toString();
String testString = whiteSpace + "abc" + whiteSpace;
equal(testString.strip(), "abc");
equal(testString.stripLeading(), "abc" + whiteSpace);
equal(testString.stripTrailing(), whiteSpace + "abc");
}
/*
* Report difference in result.
*/
static void report(String message, String inputTag, String input,
String outputTag, String output) {
System.err.println(message);
System.err.println();
System.err.println(inputTag);
System.err.println(input.codePoints()
.mapToObj(c -> (Integer)c)
.collect(Collectors.toList()));
System.err.println();
System.err.println(outputTag);
System.err.println(output.codePoints()
.mapToObj(c -> (Integer)c)
.collect(Collectors.toList()));
throw new RuntimeException();
}
/*
* Raise an exception if the two inputs are not equivalent.
*/
static void equal(String input, String expected) {
if (input == null || expected == null || !expected.equals(input)) {
report("Failed equal", "Input:", input, "Expected:", expected);
}
}
}
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