--- /dev/null
+package org.apache.lucene.search;
+
+/**
+ * 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.text.DecimalFormat;
+import java.text.DecimalFormatSymbols;
+import java.text.NumberFormat;
+import java.util.Locale;
+
+import org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.RandomIndexWriter;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.util._TestUtil;
+
+/**
+ * Create an index with terms from 000-999.
+ * Generates random wildcards according to patterns,
+ * and validates the correct number of hits are returned.
+ */
+public class TestWildcardRandom extends LuceneTestCase {
+ private IndexSearcher searcher;
+ private IndexReader reader;
+ private Directory dir;
+
+ @Override
+ public void setUp() throws Exception {
+ super.setUp();
+ dir = newDirectory();
+ RandomIndexWriter writer = new RandomIndexWriter(random, dir,
+ newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random))
+ .setMaxBufferedDocs(_TestUtil.nextInt(random, 50, 1000)));
+
+ Document doc = new Document();
+ Field bogus1 = newField("bogus1", "", Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS);
+ Field field = newField("field", "", Field.Store.NO, Field.Index.ANALYZED_NO_NORMS);
+ Field bogus2 = newField("zbogus2", "", Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS);
+ doc.add(field);
+ doc.add(bogus1);
+ doc.add(bogus2);
+
+ NumberFormat df = new DecimalFormat("000", new DecimalFormatSymbols(Locale.ENGLISH));
+ for (int i = 0; i < 1000; i++) {
+ field.setValue(df.format(i));
+ bogus1.setValue(_TestUtil.randomUnicodeString(random, 10));
+ bogus2.setValue(_TestUtil.randomUnicodeString(random, 10));
+ writer.addDocument(doc);
+ }
+
+ reader = writer.getReader();
+ searcher = newSearcher(reader);
+ writer.close();
+ }
+
+ private char N() {
+ return (char) (0x30 + random.nextInt(10));
+ }
+
+ private String fillPattern(String wildcardPattern) {
+ StringBuilder sb = new StringBuilder();
+ for (int i = 0; i < wildcardPattern.length(); i++) {
+ switch(wildcardPattern.charAt(i)) {
+ case 'N':
+ sb.append(N());
+ break;
+ default:
+ sb.append(wildcardPattern.charAt(i));
+ }
+ }
+ return sb.toString();
+ }
+
+ private void assertPatternHits(String pattern, int numHits) throws Exception {
+ // TODO: run with different rewrites
+ Query wq = new WildcardQuery(new Term("field", fillPattern(pattern)));
+ TopDocs docs = searcher.search(wq, 25);
+ assertEquals("Incorrect hits for pattern: " + pattern, numHits, docs.totalHits);
+ }
+
+ @Override
+ public void tearDown() throws Exception {
+ searcher.close();
+ reader.close();
+ dir.close();
+ super.tearDown();
+ }
+
+ public void testWildcards() throws Exception {;
+ int num = atLeast(1);
+ for (int i = 0; i < num; i++) {
+ assertPatternHits("NNN", 1);
+ assertPatternHits("?NN", 10);
+ assertPatternHits("N?N", 10);
+ assertPatternHits("NN?", 10);
+ }
+
+ for (int i = 0; i < num; i++) {
+ assertPatternHits("??N", 100);
+ assertPatternHits("N??", 100);
+ assertPatternHits("???", 1000);
+
+ assertPatternHits("NN*", 10);
+ assertPatternHits("N*", 100);
+ assertPatternHits("*", 1000);
+
+ assertPatternHits("*NN", 10);
+ assertPatternHits("*N", 100);
+
+ assertPatternHits("N*N", 10);
+
+ // combo of ? and * operators
+ assertPatternHits("?N*", 100);
+ assertPatternHits("N?*", 100);
+
+ assertPatternHits("*N?", 100);
+ assertPatternHits("*??", 1000);
+ assertPatternHits("*?N", 100);
+ }
+ }
+}