OPENJPA-485: Add test

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@681911 13f79535-47bb-0310-9956-ffa450edef68

openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/jdbc/query/TestOrderByQuery.java

@@ -0,0 +1,131 @@
+/*
+ * TestLockGroupsWithHorizontalBaseType.java
+ *
+ * Created on October 4, 2006, 5:03 PM
+ *
+ * To change this template, choose Tools | Template Manager
+ * and open the template in the editor.
+ */
+
+/*
+ * 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.openjpa.persistence.jdbc.query;
+
+
+import java.util.List;
+
+import javax.persistence.EntityManager;
+
+import org.apache.openjpa.persistence.jdbc.query.domain.IndoorGame;
+import org.apache.openjpa.persistence.jdbc.query.domain.Scrabble;
+import org.apache.openjpa.persistence.jdbc.query.domain.Chess;
+import org.apache.openjpa.persistence.jdbc.query.domain.Game;
+import org.apache.openjpa.persistence.test.SingleEMFTestCase;
+
+/**
+ * Tests ORDER BY clause can work with TABLE_PER_CLASS strategy.
+ *  
+ * Further details can be found in
+ * <A HREF="https://issues.apache.org/jira/browse/OPENJPA-485">OPENJPA-485</A>
+ * 
+ * @author Pinaki Poddar
+ *
+ */
+public class TestOrderByQuery extends SingleEMFTestCase {   
+    public void setUp() {
+    	super.setUp(DROP_TABLES, Game.class, IndoorGame.class, 
+    			Scrabble.class, Chess.class);
+		try {
+			createData();
+		} catch (Exception e) {
+			throw new RuntimeException(e);
+		}
+    }
+    
+	void createData() throws Exception {
+		EntityManager em = emf.createEntityManager();
+		em.getTransaction().begin();
+		Class[] classes = { Game.class, IndoorGame.class, Scrabble.class,
+				Chess.class };
+		for (Class cls : classes) {
+			for (int i = 1; i <= 4; i++) {
+				Game p = (Game) cls.newInstance();
+				p.setName(cls.getSimpleName() + "-" + i);
+				em.persist(p);
+			}
+		}
+		em.getTransaction().commit();
+	}
+    
+    public void testOrderByQueryAscending() {
+    	String jpql = "SELECT p FROM Game p ORDER BY p.name ASC";
+    	EntityManager em = emf.createEntityManager();
+    	
+    	List<Game> persons = em.createQuery(jpql).getResultList();
+    	assertOrdering(getNames(persons), true);
+    }
+    
+    public void testOrderByQueryDescending() {
+    	String jpql = "SELECT p FROM Game p ORDER BY p.name DESC";
+    	EntityManager em = emf.createEntityManager();
+    	
+    	List<Game> persons = em.createQuery(jpql).getResultList();
+    	assertOrdering(getNames(persons), false);
+    }
+    
+    public void testOrderByQueryProjectionAscending() {
+    	String jpql = "SELECT p.name FROM Game p ORDER BY p.name ASC";
+    	EntityManager em = emf.createEntityManager();
+    	
+    	List<String> names = em.createQuery(jpql).getResultList();
+    	assertOrdering(names.toArray(new String[names.size()]), true);
+    }
+    
+    public void testOrderByQueryProjectionDescending() {
+    	String jpql = "SELECT p.name FROM Game p ORDER BY p.name DESC";
+    	EntityManager em = emf.createEntityManager();
+    	
+    	List<String> names = em.createQuery(jpql).getResultList();
+    	assertOrdering(names.toArray(new String[names.size()]), false);
+    }
+    
+
+    
+    public String[] getNames(List<Game> persons) {
+    	assertNotNull(persons);
+    	String[] names = new String[persons.size()];
+    	int i = 0;
+    	for (Game p : persons) {
+    		names[i++] = p.getName();
+    	}
+    	return names;
+    }
+
+    public void assertOrdering(String[] names, boolean ascending) {
+    	assertNotNull(names);
+    	assertTrue(names.length>0);
+    	for (int i=1; i<names.length; i++) {
+    		if (ascending) {
+    			assertTrue(names[i].compareTo(names[i-1]) >= 0);
+    		} else {
+    			assertTrue(names[i].compareTo(names[i-1]) <= 0);
+    		}
+    	}
+    }
+}