bug fixed : dup close

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

@@ -3,9 +3,12 @@ package com.alibaba.druid.bvt.pool;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 
+import org.junit.Assert;
+
 import junit.framework.TestCase;
 
 import com.alibaba.druid.mock.MockConnection;
+import com.alibaba.druid.mock.MockConnectionClosedException;
 import com.alibaba.druid.pool.DruidDataSource;
 import com.alibaba.druid.stat.DruidDataSourceStatManager;
 
@@ -17,6 +20,7 @@ public class Bug_for_dupCloseStmtError extends TestCase {
         dataSource = new DruidDataSource();
         dataSource.setUrl("jdbc:mock:");
         dataSource.setPoolPreparedStatements(false);
+        dataSource.setTestOnBorrow(true);
     }
 
     protected void tearDown() throws Exception {
@@ -26,14 +30,24 @@ public class Bug_for_dupCloseStmtError extends TestCase {
         }
     }
 
-    public void test_0() throws Exception {
+    public void test_2() throws Exception {
         {
             Connection conn = dataSource.getConnection();
             PreparedStatement stmt = conn.prepareStatement("select 1");
             stmt.setString(1, "xx");
-            
+
             MockConnection mockConn = conn.unwrap(MockConnection.class);
             mockConn.close();
+
+            MockConnectionClosedException error = null;
+            try {
+                stmt.execute();
+            } catch (MockConnectionClosedException ex) {
+                error = ex;
+            }
+            
+            Assert.assertNotNull(error);
+            
             conn.close();
             stmt.close();
         }
@@ -43,5 +57,6 @@ public class Bug_for_dupCloseStmtError extends TestCase {
             stmt.close();
             conn.close();
         }
+        Assert.assertEquals(0, dataSource.getDupCloseCount());
     }
 }