improved jndi datasource support.

src/test/java/com/alibaba/druid/bvt/pool/DruidDataSourceTest_getConnection_2.java

@@ -0,0 +1,39 @@
+package com.alibaba.druid.bvt.pool;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+import java.sql.Connection;
+
+/**
+ * 这个场景测试defaultAutoCommit
+ * 
+ * @author wenshao [szujobs@hotmail.com]
+ */
+public class DruidDataSourceTest_getConnection_2 extends TestCase {
+
+    private DruidDataSource dataSource;
+
+    protected void setUp() throws Exception {
+        dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:mock:xxx");
+        dataSource.setTestOnBorrow(false);
+
+    }
+
+    protected void tearDown() throws Exception {
+        dataSource.close();
+    }
+
+    public void test_conn_ok() throws Exception {
+        {
+            Connection conn = dataSource.getConnection("usr1", "pwd1");
+            conn.close();
+        }
+        {
+            Connection conn = dataSource.getConnection("usr1", "pwd1");
+            conn.close();
+        }
+    }
+}