test fixed

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@728 b9813039-fb51-4c41-a8b9-e21c2acb5095

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

@@ -16,6 +16,8 @@ public class ManagedDataSourceTest extends TestCase {
     private DruidDataSource dataSource;
 
     public void setUp() throws Exception {
+        Assert.assertEquals(0, DruidDataSourceStatManager.getInstance().getDataSourceList().size());
+        
         dataSource = new DruidDataSource();
         dataSource.setUrl("jdbc:mock:xxx");
     }