pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / analyzers / common / src / test / org / apache / lucene / analysis / reverse / TestReverseStringFilter.java

diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/reverse/TestReverseStringFilter.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/reverse/TestReverseStringFilter.java
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+++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/test/org/apache/lucene/analysis/reverse/TestReverseStringFilter.java
@@ -0,0 +1,96 @@
+/**
+ * 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.
+ */
+
+package org.apache.lucene.analysis.reverse;
+
+import java.io.StringReader;
+
+import org.apache.lucene.analysis.MockTokenizer;
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.BaseTokenStreamTestCase;
+
+public class TestReverseStringFilter extends BaseTokenStreamTestCase {
+  public void testFilter() throws Exception {
+    TokenStream stream = new MockTokenizer(new StringReader("Do have a nice day"),
+        MockTokenizer.WHITESPACE, false);     // 1-4 length string
+    ReverseStringFilter filter = new ReverseStringFilter(TEST_VERSION_CURRENT, stream);
+    assertTokenStreamContents(filter, new String[] { "oD", "evah", "a", "ecin", "yad" });
+  }
+  
+  public void testFilterWithMark() throws Exception {
+    TokenStream stream = new MockTokenizer(new StringReader("Do have a nice day"),
+        MockTokenizer.WHITESPACE, false); // 1-4 length string
+    ReverseStringFilter filter = new ReverseStringFilter(TEST_VERSION_CURRENT, stream, '\u0001');
+    assertTokenStreamContents(filter, 
+        new String[] { "\u0001oD", "\u0001evah", "\u0001a", "\u0001ecin", "\u0001yad" });
+  }
+
+  public void testReverseString() throws Exception {
+    assertEquals( "A", ReverseStringFilter.reverse(TEST_VERSION_CURRENT, "A" ) );
+    assertEquals( "BA", ReverseStringFilter.reverse(TEST_VERSION_CURRENT, "AB" ) );
+    assertEquals( "CBA", ReverseStringFilter.reverse(TEST_VERSION_CURRENT, "ABC" ) );
+  }
+  
+  public void testReverseChar() throws Exception {
+    char[] buffer = { 'A', 'B', 'C', 'D', 'E', 'F' };
+    ReverseStringFilter.reverse(TEST_VERSION_CURRENT, buffer, 2, 3 );
+    assertEquals( "ABEDCF", new String( buffer ) );
+  }
+  
+  /**
+   * Test the broken 3.0 behavior, for back compat
+   */
+  public void testBackCompat() throws Exception {
+    assertEquals("\uDF05\uD866\uDF05\uD866", ReverseStringFilter.reverse("𩬅𩬅"));
+  }
+  
+  public void testReverseSupplementary() throws Exception {
+    // supplementary at end
+    assertEquals("𩬅艱鍟䇹愯瀛", ReverseStringFilter.reverse(TEST_VERSION_CURRENT, "瀛愯䇹鍟艱𩬅"));
+    // supplementary at end - 1
+    assertEquals("a𩬅艱鍟䇹愯瀛", ReverseStringFilter.reverse(TEST_VERSION_CURRENT, "瀛愯䇹鍟艱𩬅a"));
+    // supplementary at start
+    assertEquals("fedcba𩬅", ReverseStringFilter.reverse(TEST_VERSION_CURRENT, "𩬅abcdef"));
+    // supplementary at start + 1
+    assertEquals("fedcba𩬅z", ReverseStringFilter.reverse(TEST_VERSION_CURRENT, "z𩬅abcdef"));
+    // supplementary medial
+    assertEquals("gfe𩬅dcba", ReverseStringFilter.reverse(TEST_VERSION_CURRENT, "abcd𩬅efg"));
+  }
+
+  public void testReverseSupplementaryChar() throws Exception {
+    // supplementary at end
+    char[] buffer = "abc瀛愯䇹鍟艱𩬅".toCharArray();
+    ReverseStringFilter.reverse(TEST_VERSION_CURRENT, buffer, 3, 7);
+    assertEquals("abc𩬅艱鍟䇹愯瀛", new String(buffer));
+    // supplementary at end - 1
+    buffer = "abc瀛愯䇹鍟艱𩬅d".toCharArray();
+    ReverseStringFilter.reverse(TEST_VERSION_CURRENT, buffer, 3, 8);
+    assertEquals("abcd𩬅艱鍟䇹愯瀛", new String(buffer));
+    // supplementary at start
+    buffer = "abc𩬅瀛愯䇹鍟艱".toCharArray();
+    ReverseStringFilter.reverse(TEST_VERSION_CURRENT, buffer, 3, 7);
+    assertEquals("abc艱鍟䇹愯瀛𩬅", new String(buffer));
+    // supplementary at start + 1
+    buffer = "abcd𩬅瀛愯䇹鍟艱".toCharArray();
+    ReverseStringFilter.reverse(TEST_VERSION_CURRENT, buffer, 3, 8);
+    assertEquals("abc艱鍟䇹愯瀛𩬅d", new String(buffer));
+    // supplementary medial
+    buffer = "abc瀛愯𩬅def".toCharArray();
+    ReverseStringFilter.reverse(TEST_VERSION_CURRENT, buffer, 3, 7);
+    assertEquals("abcfed𩬅愯瀛", new String(buffer));
+  }
+}