| /* |
| * 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.nio.CharBuffer; |
| import java.util.Iterator; |
| import java.util.Set; |
| import java.util.TreeSet; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| /** |
| * @test |
| * @bug 8137326 |
| * @summary Test to verify the compare method for the CharSequence class. |
| * @run testng Comparison |
| */ |
| public class Comparison { |
| static char SEP = ':'; |
| |
| static String[][] books = { |
| {"Biography", "Steve Jobs"}, |
| {"Biography", "Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future"}, |
| {"Law", "Law 101: Everything You Need to Know About American Law, Fourth Edition"}, |
| {"Law", "The Tools of Argument: How the Best Lawyers Think, Argue, and Win"}, |
| {"History", "The History Book (Big Ideas Simply Explained)"}, |
| {"History", "A People's History of the United States"}, |
| }; |
| |
| /** |
| * Verifies the compare method by comparing StringBuilder objects with String |
| * objects. |
| */ |
| @Test |
| public void compareWithString() { |
| Set<StringBuilder> sbSet = constructSBSet(); |
| Set<String> sSet = constructStringSet(); |
| Iterator<StringBuilder> iSB = sbSet.iterator(); |
| Iterator<String> iS = sSet.iterator(); |
| while (iSB.hasNext()) { |
| int result = CharSequence.compare(iSB.next(), iS.next()); |
| |
| Assert.assertTrue(result == 0, "Comparing item by item"); |
| } |
| } |
| |
| /** |
| * Verify comparison between two CharSequence implementations, including String, |
| * StringBuffer and StringBuilder. |
| * |
| * Note: CharBuffer states that "A char buffer is not comparable to any other type of object." |
| */ |
| @Test |
| public void testCompare() { |
| StringBuilder sb1 = generateTestBuilder(65, 70, 97, 102); |
| StringBuilder sb2 = generateTestBuilder(65, 70, 97, 102); |
| StringBuilder sb3 = generateTestBuilder(65, 71, 97, 103); |
| |
| Assert.assertTrue(CharSequence.compare(sb1, sb2) == 0, "Compare between StringBuilders"); |
| Assert.assertFalse(CharSequence.compare(sb1, sb3) == 0, "Compare between StringBuilders"); |
| |
| Assert.assertTrue(CharSequence.compare(sb1, sb2.toString()) == 0, "Compare between a StringBuilder and String"); |
| Assert.assertFalse(CharSequence.compare(sb1, sb3.toString()) == 0, "Compare between a StringBuilder and String"); |
| |
| StringBuffer buf1 = generateTestBuffer(65, 70, 97, 102); |
| StringBuffer buf2 = generateTestBuffer(65, 70, 97, 102); |
| StringBuffer buf3 = generateTestBuffer(65, 71, 97, 103); |
| |
| Assert.assertTrue(CharSequence.compare(buf1, buf2) == 0, "Compare between StringBuffers"); |
| Assert.assertFalse(CharSequence.compare(buf1, buf3) == 0, "Compare between StringBuffers"); |
| |
| Assert.assertTrue(CharSequence.compare(sb1, buf2) == 0, "Compare between a StringBuilder and StringBuffer"); |
| Assert.assertFalse(CharSequence.compare(sb1, buf3) == 0, "Compare between a StringBuilder and StringBuffer"); |
| |
| CharSequence cs1 = (CharSequence)buf1; |
| CharSequence cs2 = (CharSequence)sb1; |
| @SuppressWarnings("unchecked") |
| int result = ((Comparable<Object>)cs1).compareTo(buf2); |
| Assert.assertTrue(result == 0, "Compare between a StringBuilder and StringBuffer"); |
| } |
| |
| |
| private Set<String> constructStringSet() { |
| Set<String> sSet = new TreeSet<>(); |
| for (String[] book : books) { |
| sSet.add(book[0] + SEP + book[1]); |
| } |
| return sSet; |
| } |
| |
| private Set<StringBuilder> constructSBSet() { |
| Set<StringBuilder> sbSet = new TreeSet<>(); |
| for (String[] book : books) { |
| sbSet.add(new StringBuilder(book[0]).append(SEP).append(book[1])); |
| } |
| return sbSet; |
| } |
| |
| private static StringBuilder generateTestBuilder(int from1, int to1, |
| int from2, int to2) { |
| StringBuilder aBuffer = new StringBuilder(50); |
| |
| for (int i = from1; i < to1; i++) { |
| aBuffer.append((char)i); |
| } |
| for (int i = from2; i < to2; i++) { |
| aBuffer.append((char)i); |
| } |
| return aBuffer; |
| } |
| |
| private static StringBuffer generateTestBuffer(int from1, int to1, |
| int from2, int to2) { |
| StringBuffer aBuffer = new StringBuffer(50); |
| |
| for (int i = from1; i < to1; i++) { |
| aBuffer.append((char)i); |
| } |
| for (int i = from2; i < to2; i++) { |
| aBuffer.append((char)i); |
| } |
| return aBuffer; |
| } |
| } |