451 lines
21 KiB
Java
451 lines
21 KiB
Java
/*
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* Copyright (c) 2015, 2022, 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.Arrays;
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import org.testng.annotations.Test;
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import static org.testng.Assert.assertEquals;
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import static org.testng.Assert.assertTrue;
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/*
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* @test
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* @bug 8054307 8077559
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* @summary Tests Compact String. This test is testing StringBuilder
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* behavior related to Compact String.
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* @run testng/othervm -XX:+CompactStrings CompactStringBuilder
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* @run testng/othervm -XX:-CompactStrings CompactStringBuilder
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*/
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public class CompactStringBuilder {
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/*
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* Tests for "A"
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*/
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@Test
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public void testCompactStringBuilderForLatinA() {
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final String ORIGIN = "A";
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/*
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* Because right now ASCII is the default encoding parameter for source
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* code in JDK build environment, so we escape them. same as below.
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*/
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check(new StringBuilder(ORIGIN).append(new char[] { '\uFF21' }),
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"A\uFF21");
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check(new StringBuilder(ORIGIN).append(new StringBuffer("\uFF21")),
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"A\uFF21");
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check(new StringBuilder(ORIGIN).append("\uFF21"), "A\uFF21");
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check(new StringBuilder(ORIGIN).append(new StringBuffer("\uFF21")),
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"A\uFF21");
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check(new StringBuilder(ORIGIN).delete(0, 1), "");
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check(new StringBuilder(ORIGIN).delete(0, 0), "A");
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check(new StringBuilder(ORIGIN).deleteCharAt(0), "");
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assertEquals(new StringBuilder(ORIGIN).indexOf("A", 0), 0);
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uFF21", 0), -1);
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assertEquals(new StringBuilder(ORIGIN).indexOf("", 0), 0);
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assertEquals(new StringBuilder(ORIGIN).insert(1, "\uD801\uDC00")
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.indexOf("A", 0), 0);
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assertEquals(new StringBuilder(ORIGIN).insert(0, "\uD801\uDC00")
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.indexOf("A", 0), 2);
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check(new StringBuilder(ORIGIN).insert(0, new char[] {}), "A");
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check(new StringBuilder(ORIGIN).insert(1, new char[] { '\uFF21' }),
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"A\uFF21");
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check(new StringBuilder(ORIGIN).insert(0, new char[] { '\uFF21' }),
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"\uFF21A");
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check(new StringBuilder(ORIGIN).insert(0, new StringBuffer("\uFF21")),
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"\uFF21A");
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check(new StringBuilder(ORIGIN).insert(1, new StringBuffer("\uFF21")),
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"A\uFF21");
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check(new StringBuilder(ORIGIN).insert(0, ""), "A");
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check(new StringBuilder(ORIGIN).insert(0, "\uFF21"), "\uFF21A");
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check(new StringBuilder(ORIGIN).insert(1, "\uFF21"), "A\uFF21");
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("A"), 0);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uFF21"), -1);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf(""), 1);
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check(new StringBuilder(ORIGIN).replace(0, 0, "\uFF21"), "\uFF21A");
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check(new StringBuilder(ORIGIN).replace(0, 1, "\uFF21"), "\uFF21");
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checkSetCharAt(new StringBuilder(ORIGIN), 0, '\uFF21', "\uFF21");
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checkSetLength(new StringBuilder(ORIGIN), 0, "");
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checkSetLength(new StringBuilder(ORIGIN), 1, "A");
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check(new StringBuilder(ORIGIN).substring(0), "A");
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check(new StringBuilder(ORIGIN).substring(1), "");
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}
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/*
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* Tests for "\uFF21"
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*/
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@Test
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public void testCompactStringBuilderForNonLatinA() {
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final String ORIGIN = "\uFF21";
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check(new StringBuilder(ORIGIN).append(new char[] { 'A' }), "\uFF21A");
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check(new StringBuilder(ORIGIN).append(new StringBuffer("A")), "\uFF21A");
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check(new StringBuilder(ORIGIN).append("A"), "\uFF21A");
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check(new StringBuilder(ORIGIN).append(new StringBuffer("A")), "\uFF21A");
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check(new StringBuilder(ORIGIN).delete(0, 1), "");
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check(new StringBuilder(ORIGIN).delete(0, 0), "\uFF21");
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check(new StringBuilder(ORIGIN).deleteCharAt(0), "");
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assertEquals(new StringBuilder(ORIGIN).indexOf("A", 0), -1);
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uFF21", 0), 0);
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assertEquals(new StringBuilder(ORIGIN).indexOf("", 0), 0);
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check(new StringBuilder(ORIGIN).insert(0, new char[] {}), "\uFF21");
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check(new StringBuilder(ORIGIN).insert(1, new char[] { 'A' }), "\uFF21A");
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check(new StringBuilder(ORIGIN).insert(0, new char[] { 'A' }), "A\uFF21");
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check(new StringBuilder(ORIGIN).insert(0, new StringBuffer("A")),
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"A\uFF21");
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check(new StringBuilder(ORIGIN).insert(1, new StringBuffer("A")),
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"\uFF21A");
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check(new StringBuilder(ORIGIN).insert(0, ""), "\uFF21");
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check(new StringBuilder(ORIGIN).insert(0, "A"), "A\uFF21");
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check(new StringBuilder(ORIGIN).insert(1, "A"), "\uFF21A");
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("A"), -1);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uFF21"), 0);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf(""), 1);
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check(new StringBuilder(ORIGIN).replace(0, 0, "A"), "A\uFF21");
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check(new StringBuilder(ORIGIN).replace(0, 1, "A"), "A");
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checkSetCharAt(new StringBuilder(ORIGIN), 0, 'A', "A");
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checkSetLength(new StringBuilder(ORIGIN), 0, "");
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checkSetLength(new StringBuilder(ORIGIN), 1, "\uFF21");
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check(new StringBuilder(ORIGIN).substring(0), "\uFF21");
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check(new StringBuilder(ORIGIN).substring(1), "");
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}
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/*
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* Tests for "\uFF21A"
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*/
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@Test
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public void testCompactStringBuilderForMixedA1() {
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final String ORIGIN = "\uFF21A";
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check(new StringBuilder(ORIGIN).delete(0, 1), "A");
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check(new StringBuilder(ORIGIN).delete(1, 2), "\uFF21");
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check(new StringBuilder(ORIGIN).deleteCharAt(1), "\uFF21");
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check(new StringBuilder(ORIGIN).deleteCharAt(0), "A");
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assertEquals(new StringBuilder(ORIGIN).indexOf("A", 0), 1);
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uFF21", 0), 0);
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assertEquals(new StringBuilder(ORIGIN).indexOf("", 0), 0);
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check(new StringBuilder(ORIGIN).insert(1, new char[] { 'A' }),
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"\uFF21AA");
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check(new StringBuilder(ORIGIN).insert(0, new char[] { '\uFF21' }),
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"\uFF21\uFF21A");
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("A"), 1);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uFF21"), 0);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf(""), 2);
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check(new StringBuilder(ORIGIN).replace(0, 0, "A"), "A\uFF21A");
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check(new StringBuilder(ORIGIN).replace(0, 1, "A"), "AA");
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checkSetCharAt(new StringBuilder(ORIGIN), 0, 'A', "AA");
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checkSetLength(new StringBuilder(ORIGIN), 0, "");
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checkSetLength(new StringBuilder(ORIGIN), 1, "\uFF21");
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check(new StringBuilder(ORIGIN).substring(0), "\uFF21A");
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check(new StringBuilder(ORIGIN).substring(1), "A");
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}
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/*
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* Tests for "A\uFF21"
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*/
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@Test
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public void testCompactStringBuilderForMixedA2() {
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final String ORIGIN = "A\uFF21";
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check(new StringBuilder(ORIGIN).replace(1, 2, "A"), "AA");
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checkSetLength(new StringBuilder(ORIGIN), 1, "A");
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check(new StringBuilder(ORIGIN).substring(0), "A\uFF21");
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check(new StringBuilder(ORIGIN).substring(1), "\uFF21");
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check(new StringBuilder(ORIGIN).substring(0, 1), "A");
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}
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/*
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* Tests for "\uFF21A\uFF21A\uFF21A\uFF21A\uFF21A"
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*/
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@Test
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public void testCompactStringBuilderForDuplicatedMixedA1() {
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final String ORIGIN = "\uFF21A\uFF21A\uFF21A\uFF21A\uFF21A";
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checkSetLength(new StringBuilder(ORIGIN), 1, "\uFF21");
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assertEquals(new StringBuilder(ORIGIN).indexOf("A", 5), 5);
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uFF21", 5), 6);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("A"), 9);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uFF21"), 8);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf(""), 10);
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check(new StringBuilder(ORIGIN).substring(9), "A");
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check(new StringBuilder(ORIGIN).substring(8), "\uFF21A");
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}
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/*
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* Tests for "A\uFF21A\uFF21A\uFF21A\uFF21A\uFF21"
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*/
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@Test
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public void testCompactStringBuilderForDuplicatedMixedA2() {
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final String ORIGIN = "A\uFF21A\uFF21A\uFF21A\uFF21A\uFF21";
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checkSetLength(new StringBuilder(ORIGIN), 1, "A");
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assertEquals(new StringBuilder(ORIGIN).indexOf("A", 5), 6);
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uFF21", 5), 5);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("A"), 8);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uFF21"), 9);
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check(new StringBuilder(ORIGIN).substring(9), "\uFF21");
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check(new StringBuilder(ORIGIN).substring(8), "A\uFF21");
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}
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/*
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* Tests for "\uD801\uDC00\uD801\uDC01"
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*/
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@Test
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public void testCompactStringForSupplementaryCodePoint() {
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final String ORIGIN = "\uD801\uDC00\uD801\uDC01";
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check(new StringBuilder(ORIGIN).append("A"), "\uD801\uDC00\uD801\uDC01A");
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check(new StringBuilder(ORIGIN).append("\uFF21"),
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"\uD801\uDC00\uD801\uDC01\uFF21");
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check(new StringBuilder(ORIGIN).appendCodePoint('A'),
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"\uD801\uDC00\uD801\uDC01A");
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check(new StringBuilder(ORIGIN).appendCodePoint('\uFF21'),
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"\uD801\uDC00\uD801\uDC01\uFF21");
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assertEquals(new StringBuilder(ORIGIN).charAt(0), '\uD801');
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assertEquals(new StringBuilder(ORIGIN).codePointAt(0),
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Character.codePointAt(ORIGIN, 0));
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assertEquals(new StringBuilder(ORIGIN).codePointAt(1),
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Character.codePointAt(ORIGIN, 1));
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(2),
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Character.codePointAt(ORIGIN, 0));
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assertEquals(new StringBuilder(ORIGIN).codePointCount(1, 3), 2);
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check(new StringBuilder(ORIGIN).delete(0, 2), "\uD801\uDC01");
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check(new StringBuilder(ORIGIN).delete(0, 3), "\uDC01");
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check(new StringBuilder(ORIGIN).deleteCharAt(1), "\uD801\uD801\uDC01");
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checkGetChars(new StringBuilder(ORIGIN), 0, 3, new char[] { '\uD801',
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'\uDC00', '\uD801' });
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uD801\uDC01"), 2);
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uDC01"), 3);
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uFF21"), -1);
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assertEquals(new StringBuilder(ORIGIN).indexOf("A"), -1);
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check(new StringBuilder(ORIGIN).insert(0, "\uFF21"),
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"\uFF21\uD801\uDC00\uD801\uDC01");
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check(new StringBuilder(ORIGIN).insert(1, "\uFF21"),
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"\uD801\uFF21\uDC00\uD801\uDC01");
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check(new StringBuilder(ORIGIN).insert(1, "A"),
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"\uD801A\uDC00\uD801\uDC01");
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uDC00\uD801"), 1);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uD801"), 2);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uFF21"), -1);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("A"), -1);
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assertEquals(new StringBuilder(ORIGIN).length(), 4);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(1, 1), 2);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(0, 1), 2);
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check(new StringBuilder(ORIGIN).replace(0, 2, "A"), "A\uD801\uDC01");
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check(new StringBuilder(ORIGIN).replace(0, 3, "A"), "A\uDC01");
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check(new StringBuilder(ORIGIN).replace(0, 2, "\uFF21"),
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"\uFF21\uD801\uDC01");
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check(new StringBuilder(ORIGIN).replace(0, 3, "\uFF21"), "\uFF21\uDC01");
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check(new StringBuilder(ORIGIN).reverse(), "\uD801\uDC01\uD801\uDC00");
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checkSetCharAt(new StringBuilder(ORIGIN), 1, '\uDC01',
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"\uD801\uDC01\uD801\uDC01");
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checkSetCharAt(new StringBuilder(ORIGIN), 1, 'A', "\uD801A\uD801\uDC01");
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checkSetLength(new StringBuilder(ORIGIN), 2, "\uD801\uDC00");
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checkSetLength(new StringBuilder(ORIGIN), 3, "\uD801\uDC00\uD801");
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check(new StringBuilder(ORIGIN).substring(1, 3), "\uDC00\uD801");
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}
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/*
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* Tests for "A\uD801\uDC00\uFF21"
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*/
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@Test
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public void testCompactStringForSupplementaryCodePointMixed1() {
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final String ORIGIN = "A\uD801\uDC00\uFF21";
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(3),
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Character.codePointAt(ORIGIN, 1));
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(2), '\uD801');
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(1), 'A');
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assertEquals(new StringBuilder(ORIGIN).codePointCount(0, 3), 2);
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assertEquals(new StringBuilder(ORIGIN).codePointCount(0, 4), 3);
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check(new StringBuilder(ORIGIN).delete(0, 1), "\uD801\uDC00\uFF21");
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check(new StringBuilder(ORIGIN).delete(0, 1).delete(2, 3),
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"\uD801\uDC00");
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check(new StringBuilder(ORIGIN).deleteCharAt(3).deleteCharAt(0),
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"\uD801\uDC00");
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assertEquals(new StringBuilder(ORIGIN).indexOf("\uFF21"), 3);
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assertEquals(new StringBuilder(ORIGIN).indexOf("A"), 0);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("\uFF21"), 3);
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assertEquals(new StringBuilder(ORIGIN).lastIndexOf("A"), 0);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(0, 1), 1);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(1, 1), 3);
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check(new StringBuilder(ORIGIN).replace(1, 3, "A"), "AA\uFF21");
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check(new StringBuilder(ORIGIN).replace(1, 4, "A"), "AA");
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check(new StringBuilder(ORIGIN).replace(1, 4, ""), "A");
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check(new StringBuilder(ORIGIN).reverse(), "\uFF21\uD801\uDC00A");
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checkSetLength(new StringBuilder(ORIGIN), 1, "A");
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check(new StringBuilder(ORIGIN).substring(0, 1), "A");
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}
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/*
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* Tests for "\uD801\uDC00\uFF21A"
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*/
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@Test
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public void testCompactStringForSupplementaryCodePointMixed2() {
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final String ORIGIN = "\uD801\uDC00\uFF21A";
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(3),
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Character.codePointAt(ORIGIN, 2));
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(2),
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Character.codePointAt(ORIGIN, 0));
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(1), '\uD801');
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assertEquals(new StringBuilder(ORIGIN).codePointCount(0, 3), 2);
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assertEquals(new StringBuilder(ORIGIN).codePointCount(0, 4), 3);
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check(new StringBuilder(ORIGIN).delete(0, 2), "\uFF21A");
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check(new StringBuilder(ORIGIN).delete(0, 3), "A");
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check(new StringBuilder(ORIGIN).deleteCharAt(0).deleteCharAt(0)
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.deleteCharAt(0), "A");
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assertEquals(new StringBuilder(ORIGIN).indexOf("A"), 3);
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assertEquals(new StringBuilder(ORIGIN).delete(0, 3).indexOf("A"), 0);
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assertEquals(new StringBuilder(ORIGIN).replace(0, 3, "B").indexOf("A"),
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1);
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assertEquals(new StringBuilder(ORIGIN).substring(3, 4).indexOf("A"), 0);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(1, 1), 2);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(0, 1), 2);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(2, 1), 3);
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check(new StringBuilder(ORIGIN).replace(0, 3, "B"), "BA");
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check(new StringBuilder(ORIGIN).reverse(), "A\uFF21\uD801\uDC00");
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}
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/*
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* Tests for "\uD801A\uDC00\uFF21"
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*/
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@Test
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public void testCompactStringForSupplementaryCodePointMixed3() {
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final String ORIGIN = "\uD801A\uDC00\uFF21";
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assertEquals(new StringBuilder(ORIGIN).codePointAt(1), 'A');
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assertEquals(new StringBuilder(ORIGIN).codePointAt(3), '\uFF21');
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(1), '\uD801');
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(2), 'A');
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(3), '\uDC00');
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assertEquals(new StringBuilder(ORIGIN).codePointCount(0, 3), 3);
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assertEquals(new StringBuilder(ORIGIN).codePointCount(1, 3), 2);
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assertEquals(new StringBuilder(ORIGIN).delete(0, 1).delete(1, 3)
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.indexOf("A"), 0);
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assertEquals(
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new StringBuilder(ORIGIN).replace(0, 1, "B").replace(2, 4, "C")
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.indexOf("A"), 1);
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assertEquals(new StringBuilder(ORIGIN).substring(1, 4).substring(0, 1)
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.indexOf("A"), 0);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(0, 1), 1);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(1, 1), 2);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(2, 1), 3);
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check(new StringBuilder(ORIGIN).reverse(), "\uFF21\uDC00A\uD801");
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}
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/*
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* Tests for "A\uDC01\uFF21\uD801"
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*/
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@Test
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public void testCompactStringForSupplementaryCodePointMixed4() {
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final String ORIGIN = "A\uDC01\uFF21\uD801";
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assertEquals(new StringBuilder(ORIGIN).codePointAt(1), '\uDC01');
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assertEquals(new StringBuilder(ORIGIN).codePointAt(3), '\uD801');
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(1), 'A');
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(2), '\uDC01');
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assertEquals(new StringBuilder(ORIGIN).codePointBefore(3), '\uFF21');
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assertEquals(new StringBuilder(ORIGIN).codePointCount(0, 3), 3);
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assertEquals(new StringBuilder(ORIGIN).codePointCount(1, 3), 2);
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assertEquals(new StringBuilder(ORIGIN).delete(1, 4).indexOf("A"), 0);
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assertEquals(new StringBuilder(ORIGIN).replace(1, 4, "B").indexOf("A"),
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0);
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assertEquals(new StringBuilder(ORIGIN).substring(0, 1).indexOf("A"), 0);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(0, 1), 1);
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assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(1, 1), 2);
|
|
assertEquals(new StringBuilder(ORIGIN).offsetByCodePoints(2, 1), 3);
|
|
check(new StringBuilder(ORIGIN).reverse(), "\uD801\uFF21\uDC01A");
|
|
}
|
|
|
|
/*
|
|
* Tests for maybeLatin1 attribute
|
|
*/
|
|
@Test
|
|
public void testCompactStringForMaybeLatin1() {
|
|
StringBuilder sb = new StringBuilder("A\uDC01");
|
|
|
|
sb.setLength(0); // maybeLatin1 become true
|
|
check(sb, "");
|
|
check(new StringBuilder(sb).append('A'), "A");
|
|
check(new StringBuilder().append(sb), "");
|
|
|
|
sb = new StringBuilder("A\uDC01");
|
|
sb.setCharAt(1, 'B'); // maybeLatin1 become true
|
|
check(sb, "AB");
|
|
check(new StringBuilder(sb).append('A'), "ABA");
|
|
check(new StringBuilder().append(sb), "AB");
|
|
|
|
sb = new StringBuilder("A\uDC01");
|
|
sb.deleteCharAt(1); // maybeLatin1 become true
|
|
check(sb, "A");
|
|
check(new StringBuilder(sb).append('B'), "AB");
|
|
check(new StringBuilder().append(sb), "A");
|
|
|
|
sb = new StringBuilder("A\uDC01\uFF21\uD801");
|
|
sb.delete(1, 4);
|
|
check(sb, "A"); // maybeLatin1 become true
|
|
check(new StringBuilder(sb).append('B'), "AB");
|
|
check(new StringBuilder().append(sb), "A");
|
|
|
|
sb = new StringBuilder("A\uDC01\uFF21\uD801");
|
|
sb.replace(1, 4, "B");
|
|
check(sb, "AB"); // maybeLatin1 become true
|
|
check(new StringBuilder(sb).append('A'), "ABA");
|
|
check(new StringBuilder().append(sb), "AB");
|
|
}
|
|
|
|
private void checkGetChars(StringBuilder sb, int srcBegin, int srcEnd,
|
|
char expected[]) {
|
|
char[] dst = new char[srcEnd - srcBegin];
|
|
sb.getChars(srcBegin, srcEnd, dst, 0);
|
|
assertTrue(Arrays.equals(dst, expected));
|
|
}
|
|
|
|
private void checkSetCharAt(StringBuilder sb, int index, char ch,
|
|
String expected) {
|
|
sb.setCharAt(index, ch);
|
|
check(sb, expected);
|
|
}
|
|
|
|
private void checkSetLength(StringBuilder sb, int newLength, String expected) {
|
|
sb.setLength(newLength);
|
|
check(sb, expected);
|
|
}
|
|
|
|
private void check(StringBuilder sb, String expected) {
|
|
check(sb.toString(), expected);
|
|
}
|
|
|
|
private void check(String str, String expected) {
|
|
assertTrue(str.equals(expected), String.format(
|
|
"Get (%s) but expect (%s), ", escapeNonASCIIs(str),
|
|
escapeNonASCIIs(expected)));
|
|
}
|
|
|
|
/*
|
|
* Escape non-ASCII characters since not all systems support them.
|
|
*/
|
|
private String escapeNonASCIIs(String str) {
|
|
StringBuilder sb = new StringBuilder();
|
|
for (int i = 0; i < str.length(); i++) {
|
|
char c = str.charAt(i);
|
|
if (c > 0x7F) {
|
|
sb.append("\\u").append(Integer.toHexString((int) c));
|
|
} else {
|
|
sb.append(c);
|
|
}
|
|
}
|
|
return sb.toString();
|
|
}
|
|
}
|