1 package org.apache.lucene.analysis.icu.segmentation;
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20 import java.io.InputStream;
22 import org.apache.lucene.util.LuceneTestCase;
24 import com.ibm.icu.lang.UCharacter;
25 import com.ibm.icu.text.BreakIterator;
26 import com.ibm.icu.text.RuleBasedBreakIterator;
27 import com.ibm.icu.text.UTF16;
30 * Tests LaoBreakIterator and its RBBI rules
32 public class TestLaoBreakIterator extends LuceneTestCase {
33 private BreakIterator wordIterator;
36 public void setUp() throws Exception {
38 InputStream is = getClass().getResourceAsStream("Lao.brk");
39 wordIterator = new LaoBreakIterator(RuleBasedBreakIterator.getInstanceFromCompiledRules(is));
43 private void assertBreaksTo(BreakIterator iterator, String sourceText, String tokens[]) {
44 char text[] = sourceText.toCharArray();
45 CharArrayIterator ci = new CharArrayIterator();
46 ci.setText(text, 0, text.length);
49 for (int i = 0; i < tokens.length; i++) {
52 start = iterator.current();
53 end = iterator.next();
54 } while (end != BreakIterator.DONE && !isWord(text, start, end));
55 assertTrue(start != BreakIterator.DONE);
56 assertTrue(end != BreakIterator.DONE);
57 assertEquals(tokens[i], new String(text, start, end - start));
60 assertTrue(iterator.next() == BreakIterator.DONE);
63 protected boolean isWord(char text[], int start, int end) {
65 for (int i = start; i < end; i += UTF16.getCharCount(codepoint)) {
66 codepoint = UTF16.charAt(text, 0, end, start);
68 if (UCharacter.isLetterOrDigit(codepoint))
75 public void testBasicUsage() throws Exception {
76 assertBreaksTo(wordIterator, "ກວ່າດອກ", new String[] { "ກວ່າ", "ດອກ" });
77 assertBreaksTo(wordIterator, "ຜູ້ເຂົ້າ", new String[] { "ຜູ້", "ເຂົ້າ" });
78 assertBreaksTo(wordIterator, "", new String[] {});
79 assertBreaksTo(wordIterator, "ສະບາຍດີ", new String[] { "ສະ", "ບາຍ", "ດີ" });
82 public void testNumerics() throws Exception {
83 assertBreaksTo(wordIterator, "໐໑໒໓", new String[] { "໐໑໒໓" });
84 assertBreaksTo(wordIterator, "໐໑໒໓.໕໖", new String[] { "໐໑໒໓.໕໖" });
87 public void testTextAndNumerics() throws Exception {
88 assertBreaksTo(wordIterator, "ກວ່າດອກ໐໑໒໓", new String[] { "ກວ່າ", "ດອກ", "໐໑໒໓" });