Fix more unit test connection leaks

Hi,

I found some more connection leaks from the test cases.

Index: org/postgresql/test/jdbc2/MiscTest.java
===================================================================
RCS file: /usr/local/cvsroot/pgjdbc/pgjdbc/org/postgresql/test/jdbc2/MiscTest.java,v
retrieving revision 1.20
diff -u -r1.20 MiscTest.java
--- org/postgresql/test/jdbc2/MiscTest.java    2 Dec 2005 03:05:10 -0000    1.20
+++ org/postgresql/test/jdbc2/MiscTest.java    21 Jul 2007 21:08:18 -0000
@@ -66,6 +66,7 @@
             rs.close();
             stmt.cancel();
         }
+        TestUtil.closeDB(con);
     }

     public void testError() throws Exception
@@ -130,5 +131,6 @@
         con.commit();
         TestUtil.dropTable(con, "test_lock");
         con.close();
+        con2.close();
     }
 }
Index: org/postgresql/test/jdbc2/ConnectionTest.java
===================================================================
RCS file: /usr/local/cvsroot/pgjdbc/pgjdbc/org/postgresql/test/jdbc2/ConnectionTest.java,v
retrieving revision 1.21
diff -u -r1.21 ConnectionTest.java
--- org/postgresql/test/jdbc2/ConnectionTest.java    24 Nov 2005 02:31:43 -0000    1.21
+++ org/postgresql/test/jdbc2/ConnectionTest.java    21 Jul 2007 21:08:17 -0000
@@ -22,6 +22,8 @@
 public class ConnectionTest extends TestCase
 {

+    private Connection con;
+
     /*
      * Constructor
      */
@@ -33,7 +35,7 @@
     // Set up the fixture for this testcase: the tables for this test.
     protected void setUp() throws Exception
     {
-        Connection con = TestUtil.openDB();
+        con = TestUtil.openDB();

         TestUtil.createTable(con, "test_a", "imagename name,image oid,id int4");
         TestUtil.createTable(con, "test_c", "source text,cost money,imageid int4");
@@ -44,7 +46,9 @@
     // Tear down the fixture for this test case.
     protected void tearDown() throws Exception
     {
-        Connection con = TestUtil.openDB();
+        TestUtil.closeDB(con);
+
+        con = TestUtil.openDB();

         TestUtil.dropTable(con, "test_a");
         TestUtil.dropTable(con, "test_c");
@@ -57,15 +61,15 @@
      */
     public void testCreateStatement() throws Exception
     {
-        Connection conn = TestUtil.openDB();
+        con = TestUtil.openDB();

         // A standard Statement
-        Statement stat = conn.createStatement();
+        Statement stat = con.createStatement();
         assertNotNull(stat);
         stat.close();

         // Ask for Updateable ResultSets
-        stat = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
+        stat = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
         assertNotNull(stat);
         stat.close();
     }
@@ -75,17 +79,17 @@
      */
     public void testPrepareStatement() throws Exception
     {
-        Connection conn = TestUtil.openDB();
+        con = TestUtil.openDB();

         String sql = "select source,cost,imageid from test_c";

         // A standard Statement
-        PreparedStatement stat = conn.prepareStatement(sql);
+        PreparedStatement stat = con.prepareStatement(sql);
         assertNotNull(stat);
         stat.close();

         // Ask for Updateable ResultSets
-        stat = conn.prepareStatement(sql, ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
+        stat = con.prepareStatement(sql, ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
         assertNotNull(stat);
         stat.close();
     }
@@ -103,7 +107,7 @@
     public void testNativeSQL() throws Exception
     {
         // test a simple escape
-        Connection con = TestUtil.openDB();
+        con = TestUtil.openDB();
         assertEquals("DATE  '2005-01-24'",con.nativeSQL("{d '2005-01-24'}"));
     }

@@ -112,7 +116,7 @@
      */
     public void testTransactions() throws Exception
     {
-        Connection con = TestUtil.openDB();
+        con = TestUtil.openDB();
         Statement st;
         ResultSet rs;

@@ -154,7 +158,7 @@
      */
     public void testIsClosed() throws Exception
     {
-        Connection con = TestUtil.openDB();
+        con = TestUtil.openDB();

         // Should not say closed
         assertTrue(!con.isClosed());
@@ -170,7 +174,7 @@
      */
     public void testWarnings() throws Exception
     {
-        Connection con = TestUtil.openDB();
+        con = TestUtil.openDB();

         String testStr = "This Is OuR TeSt message";

@@ -200,7 +204,7 @@
      */
     public void testTransactionIsolation() throws Exception
     {
-        Connection con = TestUtil.openDB();
+        con = TestUtil.openDB();

         // PostgreSQL defaults to READ COMMITTED
         assertEquals(Connection.TRANSACTION_READ_COMMITTED,
@@ -274,7 +278,7 @@
      */
     public void testTypeMaps() throws Exception
     {
-        Connection con = TestUtil.openDB();
+        con = TestUtil.openDB();

         // preserve the current map
         java.util.Map oldmap = con.getTypeMap();
@@ -296,7 +300,7 @@
      */
     public void testDoubleClose() throws Exception
     {
-        Connection con = TestUtil.openDB();
+        con = TestUtil.openDB();
         con.close();
         con.close();
     }
Index: org/postgresql/test/jdbc2/DatabaseMetaDataTest.java
===================================================================
RCS file: /usr/local/cvsroot/pgjdbc/pgjdbc/org/postgresql/test/jdbc2/DatabaseMetaDataTest.java,v
retrieving revision 1.38
diff -u -r1.38 DatabaseMetaDataTest.java
--- org/postgresql/test/jdbc2/DatabaseMetaDataTest.java    15 Jul 2007 15:33:33 -0000    1.38
+++ org/postgresql/test/jdbc2/DatabaseMetaDataTest.java    21 Jul 2007 21:08:18 -0000
@@ -167,6 +167,7 @@

         TestUtil.dropTable( con1, "vv" );
         TestUtil.dropTable( con1, "ww" );
+        TestUtil.closeDB(con1);
     }

     public void testForeignKeyActions() throws Exception
@@ -192,6 +193,7 @@
         TestUtil.dropTable(conn, "fkt2");
         TestUtil.dropTable(conn, "fkt1");
         TestUtil.dropTable(conn, "pkt");
+        TestUtil.closeDB(conn);
     }

     public void testForeignKeysToUniqueIndexes() throws Exception
@@ -310,7 +312,7 @@
         TestUtil.dropTable( con1, "users" );
         TestUtil.dropTable( con1, "people" );
         TestUtil.dropTable( con1, "policy" );
-
+        TestUtil.closeDB(con1);
     }

     public void testColumns() throws SQLException