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