diff --git a/waynboot-generator/src/main/test/com/test/FoodTest.java b/waynboot-generator/src/main/test/com/test/FoodTest.java
new file mode 100644
index 0000000..7868d05
--- /dev/null
+++ b/waynboot-generator/src/main/test/com/test/FoodTest.java
@@ -0,0 +1,40 @@
+package com.test;
+
+public class FoodTest {
+
+    class Food {
+    }
+
+    class Fruit extends Food {
+    }
+
+    class Apple extends Fruit {
+    }
+
+    class Origin extends Fruit {
+    }
+
+    class Plate <T>{
+        private T item;
+
+        public Plate(T t) {
+            item = t;
+        }
+
+        public void set(T t) {
+            item = t;
+        }
+
+        public T get() {
+            return item;
+        }
+    }
+
+    public static void main(String[] args) {
+        new FoodTest().test();
+    }
+
+    public void test() {
+        Plate<? extends Fruit> p = new Plate<>(new Apple());
+    }
+}