copied from TestPhrasePrefixQuery, added a test for toString() and added a test where the first term is expanded

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@150583 13f79535-47bb-0310-9956-ffa450edef68

src/test/org/apache/lucene/search/TestMultiPhraseQuery.java

@@ -0,0 +1,126 @@
+package org.apache.lucene.search;
+
+/**
+ * Copyright 2004 The Apache Software Foundation
+ *
+ * Licensed 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.search.IndexSearcher;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.index.TermEnum;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.store.RAMDirectory;
+import org.apache.lucene.analysis.SimpleAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+
+import junit.framework.TestCase;
+
+import java.io.IOException;
+import java.util.LinkedList;
+
+/**
+ * This class tests the MultiPhraseQuery class.
+ *
+ * @author Otis Gospodnetic, Daniel Naber
+ * @version $Id$
+ */
+public class TestMultiPhraseQuery
+    extends TestCase
+{
+    public TestMultiPhraseQuery(String name)
+    {
+        super(name);
+    }
+
+    /**
+     *
+     */
+    public void testPhrasePrefix()
+        throws IOException
+    {
+        RAMDirectory indexStore = new RAMDirectory();
+        IndexWriter writer = new IndexWriter(indexStore, new SimpleAnalyzer(), true);
+        Document doc1 = new Document();
+        Document doc2 = new Document();
+        Document doc3 = new Document();
+        Document doc4 = new Document();
+        Document doc5 = new Document();
+        doc1.add(new Field("body", "blueberry pie", Field.Store.YES, Field.Index.TOKENIZED));
+        doc2.add(new Field("body", "blueberry strudel", Field.Store.YES, Field.Index.TOKENIZED));
+        doc3.add(new Field("body", "blueberry pizza", Field.Store.YES, Field.Index.TOKENIZED));
+        doc4.add(new Field("body", "blueberry chewing gum", Field.Store.YES, Field.Index.TOKENIZED));
+        doc4.add(new Field("body", "bluebird pizza", Field.Store.YES, Field.Index.TOKENIZED));
+        doc5.add(new Field("body", "piccadilly circus", Field.Store.YES, Field.Index.TOKENIZED));
+        writer.addDocument(doc1);
+        writer.addDocument(doc2);
+        writer.addDocument(doc3);
+        writer.addDocument(doc4);
+        writer.addDocument(doc5);
+        writer.optimize();
+        writer.close();
+
+        IndexSearcher searcher = new IndexSearcher(indexStore);
+
+        // search for "blueberry pi*":
+        MultiPhraseQuery query1 = new MultiPhraseQuery();
+        // search for "strawberry pi*":
+        MultiPhraseQuery query2 = new MultiPhraseQuery();
+        query1.add(new Term("body", "blueberry"));
+        query2.add(new Term("body", "strawberry"));
+
+        LinkedList termsWithPrefix = new LinkedList();
+        IndexReader ir = IndexReader.open(indexStore);
+
+        // this TermEnum gives "piccadilly", "pie" and "pizza".
+        String prefix = "pi";
+        TermEnum te = ir.terms(new Term("body", prefix + "*"));
+        do {
+            if (te.term().text().startsWith(prefix))
+            {
+                termsWithPrefix.add(te.term());
+            }
+        } while (te.next());
+
+        query1.add((Term[])termsWithPrefix.toArray(new Term[0]));
+        assertEquals("body:\"blueberry (piccadilly pie pizza)\"", query1.toString());
+        query2.add((Term[])termsWithPrefix.toArray(new Term[0]));
+        assertEquals("body:\"strawberry (piccadilly pie pizza)\"", query2.toString());
+
+        Hits result;
+        result = searcher.search(query1);
+        assertEquals(2, result.length());
+        result = searcher.search(query2);
+        assertEquals(0, result.length());
+
+        // search for "blue* pizza":
+        MultiPhraseQuery query3 = new MultiPhraseQuery();
+        termsWithPrefix.clear();
+        prefix = "blue";
+        te = ir.terms(new Term("body", prefix + "*"));
+        do {
+            if (te.term().text().startsWith(prefix))
+            {
+                termsWithPrefix.add(te.term());
+            }
+        } while (te.next());
+        query3.add((Term[])termsWithPrefix.toArray(new Term[0]));
+        query3.add(new Term("body", "pizza"));
+
+        result = searcher.search(query3);
+        assertEquals(2, result.length()); // blueberry pizza, blueberry chewing gum
+        assertEquals("body:\"(blueberry bluebird) pizza\"", query3.toString());
+    }
+}