fix test case

sharding-core/sharding-core-entry/src/test/java/org/apache/shardingsphere/core/shard/PreparedQueryShardingEngineTest.java

@@ -62,7 +62,7 @@ public final class PreparedQueryShardingEngineTest extends BaseShardingEngineTes
     
     @SneakyThrows
     private void setRoutingEngine() {
-        Field field = PreparedQueryShardingEngine.class.getDeclaredField("shardingRouter");
+        Field field = BaseShardingEngine.class.getDeclaredField("shardingRouter");
         field.setAccessible(true);
         field.set(shardingEngine, shardingRouter);
     }

sharding-core/sharding-core-entry/src/test/java/org/apache/shardingsphere/core/shard/SimpleQueryShardingEngineTest.java

@@ -60,7 +60,7 @@ public final class SimpleQueryShardingEngineTest extends BaseShardingEngineTest
     
     @SneakyThrows
     private void setRoutingEngine() {
-        Field field = SimpleQueryShardingEngine.class.getDeclaredField("shardingRouter");
+        Field field = BaseShardingEngine.class.getDeclaredField("shardingRouter");
         field.setAccessible(true);
         field.set(shardingEngine, shardingRouter);
     }