Add test

querydsl-sql/src/main/java/com/querydsl/sql/AbstractSQLQuery.java

@@ -175,8 +175,6 @@ public abstract class AbstractSQLQuery<T, Q extends AbstractSQLQuery<T, Q>> exte
         listeners.end(context);
     }
 
-
-
     /**
      * Get the results as an JDBC result set
      *

querydsl-sql/src/main/java/com/querydsl/sql/SQLCloseListener.java

@@ -21,7 +21,11 @@ import com.querydsl.core.QueryException;
 /**
  * {@code SQLCloseListener} closes the JDBC connection at the end of the query or clause execution
  */
-public class SQLCloseListener extends SQLBaseListener {
+public final class SQLCloseListener extends SQLBaseListener {
+
+    public static final SQLCloseListener DEFAULT = new SQLCloseListener();
+
+    private SQLCloseListener() { }
 
     @Override
     public void end(SQLListenerContext context) {

querydsl-sql/src/test/java/com/querydsl/sql/SQLCloseListenerTest.java

@@ -0,0 +1,66 @@
+package com.querydsl.sql;
+
+import static com.querydsl.sql.Constants.employee;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+
+import java.sql.SQLException;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.mysema.commons.lang.CloseableIterator;
+import com.querydsl.sql.domain.Employee;
+
+public class SQLCloseListenerTest {
+
+    private SQLQuery<Employee> query;
+
+    @Before
+    public void setUp() throws SQLException, ClassNotFoundException {
+        Connections.initH2();
+        Configuration conf = new Configuration(H2Templates.DEFAULT);
+        conf.addListener(SQLCloseListener.DEFAULT);
+        query = new SQLQuery<Void>(Connections.getConnection(), conf).select(employee).from(employee);
+    }
+
+    @After
+    public void tearDown() throws SQLException {
+        Connections.close();
+    }
+
+    @Test
+    public void fetch() {
+        assertFalse(query.fetch().isEmpty());
+    }
+
+    @Test
+    public void fetchOne() {
+        assertNotNull(query.limit(1).fetchOne());
+    }
+
+    @Test
+    public void fetchFirst() {
+        assertNotNull(query.fetchFirst());
+    }
+
+    @Test
+    public void fetchResults() {
+        assertNotNull(query.fetchResults());
+    }
+
+    @Test
+    public void iterate() {
+        CloseableIterator<Employee> it = query.iterate();
+        try {
+            while (it.hasNext()) {
+                it.next();
+            }
+        } finally {
+            it.close();
+        }
+    }
+
+
+}