--- /dev/null
+package org.apache.lucene.analysis.miscellaneous;
+
+/**
+ * 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 org.apache.lucene.analysis.BaseTokenStreamTestCase;
+import org.apache.lucene.analysis.MockTokenizer;
+import org.apache.lucene.analysis.Token;
+
+import java.io.IOException;
+import java.io.StringReader;
+
+public class TestPrefixAwareTokenFilter extends BaseTokenStreamTestCase {
+
+ public void test() throws IOException {
+
+ PrefixAwareTokenFilter ts;
+
+ ts = new PrefixAwareTokenFilter(
+ new SingleTokenTokenStream(createToken("a", 0, 1)),
+ new SingleTokenTokenStream(createToken("b", 0, 1)));
+ assertTokenStreamContents(ts,
+ new String[] { "a", "b" },
+ new int[] { 0, 1 },
+ new int[] { 1, 2 });
+
+ // prefix and suffix using 2x prefix
+
+ ts = new PrefixAwareTokenFilter(new SingleTokenTokenStream(createToken("^", 0, 0)),
+ new MockTokenizer(new StringReader("hello world"), MockTokenizer.WHITESPACE, false));
+ ts = new PrefixAwareTokenFilter(ts, new SingleTokenTokenStream(createToken("$", 0, 0)));
+
+ assertTokenStreamContents(ts,
+ new String[] { "^", "hello", "world", "$" },
+ new int[] { 0, 0, 6, 11 },
+ new int[] { 0, 5, 11, 11 });
+ }
+
+ private static Token createToken(String term, int start, int offset)
+ {
+ return new Token(term, start, offset);
+ }
+}