pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / icu / src / test / org / apache / lucene / analysis / icu / segmentation / TestLaoBreakIterator.java

diff --git a/lucene-java-3.5.0/lucene/contrib/icu/src/test/org/apache/lucene/analysis/icu/segmentation/TestLaoBreakIterator.java b/lucene-java-3.5.0/lucene/contrib/icu/src/test/org/apache/lucene/analysis/icu/segmentation/TestLaoBreakIterator.java
new file mode 100644 (file)
index 0000000..9f86156
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+++ b/lucene-java-3.5.0/lucene/contrib/icu/src/test/org/apache/lucene/analysis/icu/segmentation/TestLaoBreakIterator.java
@@ -0,0 +1,90 @@
+package org.apache.lucene.analysis.icu.segmentation;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.io.InputStream;
+
+import org.apache.lucene.util.LuceneTestCase;
+
+import com.ibm.icu.lang.UCharacter;
+import com.ibm.icu.text.BreakIterator;
+import com.ibm.icu.text.RuleBasedBreakIterator;
+import com.ibm.icu.text.UTF16;
+
+/**
+ * Tests LaoBreakIterator and its RBBI rules
+ */
+public class TestLaoBreakIterator extends LuceneTestCase {
+  private BreakIterator wordIterator;
+  
+  @Override
+  public void setUp() throws Exception {
+    super.setUp();
+    InputStream is = getClass().getResourceAsStream("Lao.brk");
+    wordIterator = new LaoBreakIterator(RuleBasedBreakIterator.getInstanceFromCompiledRules(is));
+    is.close();
+  }
+  
+  private void assertBreaksTo(BreakIterator iterator, String sourceText, String tokens[]) {
+    char text[] = sourceText.toCharArray();
+    CharArrayIterator ci = new CharArrayIterator();
+    ci.setText(text, 0, text.length);
+    iterator.setText(ci);
+    
+    for (int i = 0; i < tokens.length; i++) {
+      int start, end;
+      do {
+        start = iterator.current();
+        end = iterator.next();
+      } while (end != BreakIterator.DONE && !isWord(text, start, end));
+      assertTrue(start != BreakIterator.DONE);
+      assertTrue(end != BreakIterator.DONE);
+      assertEquals(tokens[i], new String(text, start, end - start));
+    }
+    
+    assertTrue(iterator.next() == BreakIterator.DONE);
+  }
+  
+  protected boolean isWord(char text[], int start, int end) {
+    int codepoint;
+    for (int i = start; i < end; i += UTF16.getCharCount(codepoint)) {
+      codepoint = UTF16.charAt(text, 0, end, start);
+
+      if (UCharacter.isLetterOrDigit(codepoint))
+        return true;
+      }
+
+    return false;
+  }
+  
+  public void testBasicUsage() throws Exception {
+    assertBreaksTo(wordIterator, "ກວ່າດອກ", new String[] { "ກວ່າ", "ດອກ" });
+    assertBreaksTo(wordIterator, "ຜູ້​ເຂົ້າ", new String[] { "ຜູ້", "ເຂົ້າ" });
+    assertBreaksTo(wordIterator, "", new String[] {});
+    assertBreaksTo(wordIterator, "ສະບາຍດີ", new String[] { "ສະ", "ບາຍ", "ດີ" });
+  }
+  
+  public void testNumerics() throws Exception {
+    assertBreaksTo(wordIterator, "໐໑໒໓", new String[] { "໐໑໒໓" });
+    assertBreaksTo(wordIterator, "໐໑໒໓.໕໖", new String[] { "໐໑໒໓.໕໖" });
+  }
+ 
+  public void testTextAndNumerics() throws Exception {
+    assertBreaksTo(wordIterator, "ກວ່າດອກ໐໑໒໓", new String[] { "ກວ່າ", "ດອກ", "໐໑໒໓" });
+  }
+}