102 lines
3.5 KiB
Java
102 lines
3.5 KiB
Java
/*
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.util.List;
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import java.util.stream.Collectors;
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import java.util.stream.IntStream;
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/**
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* @test
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* @summary Basic strip, stripLeading, stripTrailing functionality
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* @bug 8200377
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* @run main/othervm Strip
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*/
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public class Strip {
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public static void main(String... arg) {
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testStrip();
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testWhitespace();
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}
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/*
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* Test basic stripping routines
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*/
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static void testStrip() {
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equal(" abc ".strip(), "abc");
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equal(" abc ".stripLeading(), "abc ");
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equal(" abc ".stripTrailing(), " abc");
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equal(" abc\u2022 ".strip(), "abc\u2022");
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equal(" abc\u2022 ".stripLeading(), "abc\u2022 ");
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equal(" abc\u2022 ".stripTrailing(), " abc\u2022");
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equal("".strip(), "");
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equal("".stripLeading(), "");
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equal("".stripTrailing(), "");
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equal("\b".strip(), "\b");
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equal("\b".stripLeading(), "\b");
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equal("\b".stripTrailing(), "\b");
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}
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/*
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* Test full whitespace range
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*/
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static void testWhitespace() {
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StringBuilder sb = new StringBuilder(64);
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IntStream.range(1, 0xFFFF).filter(c -> Character.isWhitespace(c))
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.forEach(c -> sb.append((char)c));
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String whiteSpace = sb.toString();
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String testString = whiteSpace + "abc" + whiteSpace;
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equal(testString.strip(), "abc");
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equal(testString.stripLeading(), "abc" + whiteSpace);
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equal(testString.stripTrailing(), whiteSpace + "abc");
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}
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/*
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* Report difference in result.
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*/
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static void report(String message, String inputTag, String input,
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String outputTag, String output) {
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System.err.println(message);
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System.err.println();
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System.err.println(inputTag);
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System.err.println(input.codePoints()
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.mapToObj(c -> (Integer)c)
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.collect(Collectors.toList()));
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System.err.println();
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System.err.println(outputTag);
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System.err.println(output.codePoints()
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.mapToObj(c -> (Integer)c)
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.collect(Collectors.toList()));
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throw new RuntimeException();
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}
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/*
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* Raise an exception if the two inputs are not equivalent.
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*/
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static void equal(String input, String expected) {
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if (input == null || expected == null || !expected.equals(input)) {
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report("Failed equal", "Input:", input, "Expected:", expected);
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}
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}
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}
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