93 lines
3.7 KiB
Java
93 lines
3.7 KiB
Java
/*
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* Copyright (c) 2023, 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 org.testng.annotations.Test;
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import static org.testng.Assert.assertEquals;
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import static org.testng.Assert.fail;
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/**
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* @test
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* @bug 8302877
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* @summary Provides exhaustive verification of Character.toUpperCase and Character.toLowerCase
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* for all code points in the latin1 range 0-255.
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* @run testng Latin1CaseConversion
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*/
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public class Latin1CaseConversion {
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@Test
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public void shouldUpperCaseAndLowerCaseLatin1() {
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for (int c = 0; c < 256; c++) {
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int upper = Character.toUpperCase(c);
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int lower = Character.toLowerCase(c);
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if (c < 0x41) { // Before A
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assertUnchanged(upper, lower, c);
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} else if (c <= 0x5A) { // A-Z
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assertEquals(upper, c);
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assertEquals(lower, c + 32);
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} else if (c < 0x61) { // Between Z and a
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assertUnchanged(upper, lower, c);
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} else if (c <= 0x7A) { // a-z
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assertEquals(upper, c - 32);
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assertEquals(lower, c);
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} else if (c < 0xB5) { // Between z and Micro Sign
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assertUnchanged(upper, lower, c);
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} else if (c == 0xB5) { // Special case for Micro Sign
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assertEquals(upper, 0x39C);
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assertEquals(lower, c);
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} else if (c < 0xC0) { // Between my and A-grave
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assertUnchanged(upper, lower, c);
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} else if (c < 0xD7) { // A-grave - O with Diaeresis
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assertEquals(upper, c);
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assertEquals(lower, c + 32);
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} else if (c == 0xD7) { // Multiplication
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assertUnchanged(upper, lower, c);
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} else if (c <= 0xDE) { // O with slash - Thorn
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assertEquals(upper, c);
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assertEquals(lower, c + 32);
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} else if (c == 0xDF) { // Sharp s
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assertUnchanged(upper, lower, c);
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} else if (c < 0xF7) { // a-grave - divsion
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assertEquals(upper, c - 32);
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assertEquals(lower, c);
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} else if (c == 0xF7) { // Division
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assertUnchanged(upper, lower, c);
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} else if (c < 0xFF) { // o with slash - thorn
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assertEquals(upper, c - 32);
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assertEquals(lower, c);
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} else if (c == 0XFF) { // Special case for y with Diaeresis
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assertEquals(upper, 0x178);
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assertEquals(lower, c);
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} else {
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fail("Uncovered code point: " + Integer.toHexString(c));
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}
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}
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}
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private static void assertUnchanged(int upper, int lower, int c) {
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assertEquals(upper, c);
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assertEquals(lower, c);
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}
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}
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