| /* |
| * Copyright (c) 2008, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 4888843 |
| * @summary verify that surrogate pairs representing codepoints with R or AL directionality |
| * and correctly recognized and reordered. |
| */ |
| |
| import java.text.Bidi; |
| |
| public class BidiSurrogateTest { |
| private static final String RTLS = new String(Character.toChars(0x10800)); // surrogate code point with R directionality |
| private static final String LTRS = new String(Character.toChars(0x107ff)); // surrogate code point with L directionality |
| private static final String LRE = "\u202a"; |
| private static final String RLE = "\u202b"; |
| private static final String PDF = "\u202c"; |
| |
| |
| public static void main(String[] args) { |
| new BidiSurrogateTest().test(); |
| } |
| |
| void test() { |
| test0(); |
| test1(); |
| } |
| |
| void test0() { |
| // test unpaired surrogates - should have L directionality |
| testRequiresBidi("\ud800", false); // unpaired lead surrogate |
| testRequiresBidi("\udc00", false); // unpaired trail surrogate |
| testRequiresBidi("\udc00\ud800", false); // out of order surrogates |
| testRequiresBidi("a\udc00b\ud800c", false); // out of order surrogates split |
| testRequiresBidi(LTRS, false); // supplementary with L |
| testRequiresBidi(RTLS, true); // supplementary with R |
| testRequiresBidi("a" + RTLS + "b", true); // R supplementary in LTR text |
| testRequiresBidi(LTRS + RTLS, true); // R supplementary in LTR supplementary text |
| testRequiresBidi(LRE, false); // LRE lone embedding |
| testRequiresBidi(RLE, true); // RLE lone embedding |
| testRequiresBidi(PDF, false); // PDF lone pop embedding |
| } |
| |
| void testRequiresBidi(String string, boolean requiresBidi) { |
| char[] text = string.toCharArray(); |
| if (Bidi.requiresBidi(text, 0, text.length) != requiresBidi) { |
| throw new RuntimeException("testRequiresBidi failed with '" + string + "', " + requiresBidi); |
| } |
| } |
| |
| void test1() { |
| // test that strings with surrogate runs process surrogate directionality ok |
| testBidi("This is a string with " + LTRS + " in it.", false); |
| testBidi("This is a string with \ud800 in it.", false); |
| testBidi("This is a string with \u0640 in it.", 22, 1); |
| testBidi(RTLS, true); |
| testBidi("This is a string with " + RTLS + RTLS + RTLS + " in it.", 22, 6); |
| } |
| |
| void testBidi(String string, boolean directionIsRTL) { |
| Bidi bidi = new Bidi(string, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT); |
| if (bidi.isMixed()) { |
| throw new RuntimeException("bidi is mixed"); |
| } |
| if (bidi.isRightToLeft() != directionIsRTL) { |
| throw new RuntimeException("bidi is not " + (directionIsRTL ? "rtl" : "ltr")); |
| } |
| } |
| |
| void testBidi(String string, int rtlstart, int rtllength) { |
| Bidi bidi = new Bidi(string, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT); |
| for (int i = 0; i < bidi.getRunCount(); ++i) { |
| if ((bidi.getRunLevel(i) & 1) != 0) { |
| if (bidi.getRunStart(i) != rtlstart || |
| bidi.getRunLimit(i) != rtlstart + rtllength) { |
| throw new RuntimeException("first rtl run didn't match " + rtlstart + ", " + rtllength); |
| } |
| break; |
| } |
| } |
| } |
| } |