refactor

src/test/java/com/alibaba/druid/pool/TestMockPerf.java

@@ -1,6 +1,7 @@
 package com.alibaba.druid.pool;
 
 import java.sql.Connection;
+import java.sql.Statement;
 
 import junit.framework.TestCase;
 
@@ -14,6 +15,8 @@ public class TestMockPerf extends TestCase {
         dataSource.setInitialSize(3);
         dataSource.setMinIdle(3);
         dataSource.setMaxActive(20);
+        dataSource.setDbType("mysql");
+        dataSource.setFilters("stat,wall");
         dataSource.init();
     }
 
@@ -29,6 +32,9 @@ public class TestMockPerf extends TestCase {
     public void perf() throws Exception {
         for (int i = 0; i < 1000 * 1000; ++i) {
             Connection conn = dataSource.getConnection();
+            Statement stmt = conn.createStatement();
+            stmt.execute("SELECT 1");
+            stmt.close();
             conn.close();
         }
     }