test fixed

src/main/java/com/alibaba/druid/pool/DruidPooledPreparedStatement.java

@@ -998,6 +998,10 @@ public class DruidPooledPreparedStatement extends DruidPooledStatement implement
             return (T) stmt;
         }
         
+        if (iface == PreparedStatementHolder.class) {
+            return (T) this.holder;
+        }
+        
         return super.unwrap(iface);
     }
 }

src/main/java/com/alibaba/druid/pool/PreparedStatementPool.java

@@ -58,6 +58,7 @@ public class PreparedStatementPool {
                 return null;
             }
             
+            holder.incrementHitCount();
             dataSource.incrementCachedPreparedStatementHitCount();
             if (holder.isEnterOracleImplicitCache()) {
                 OracleUtils.exitImplicitCacheToActive(holder.getStatement());