diff --git a/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/ClassUtilTest.java b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/ClassUtilTest.java
new file mode 100644
index 00000000..d70c1ccb
--- /dev/null
+++ b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/ClassUtilTest.java
@@ -0,0 +1,68 @@
+package com.mybatisflex.coretest;
+
+import com.mybatisflex.core.table.TableInfoFactory;
+import com.mybatisflex.core.util.ClassUtil;
+import org.junit.Test;
+
+import java.lang.reflect.Field;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+public class ClassUtilTest {
+    public static class A extends E implements B, D{
+        public String name1;
+    }
+    interface B extends C{
+        default void test1() {
+        }
+    }
+    interface C {
+        default void test2() {
+        }
+    }
+    interface D {
+        default void test3() {
+        }
+    }
+
+    public static class E extends F{
+        public String name1;
+    }
+
+    public static class F {
+        public String name3;
+    }
+
+    @Test
+    public void testMethods() {
+        System.out.println(ClassUtil.getAnyMethod(A.class, "test2", "test3"));
+//        List<Method> methods = new ArrayList<>();
+//        ClassUtil.doGetMethods(A.class,methods,null,false);
+//        methods.forEach(method -> System.out.println("all:"+method.getDeclaringClass()+ ":" +method.getName()));
+//        methods.clear();
+//        ClassUtil.doGetMethods(A.class,methods,null,true);
+//        methods.forEach(method -> System.out.println("firstOnly:"+method.getDeclaringClass()+ ":" +method.getName()));
+        assertEquals("public default void com.mybatisflex.coretest.ClassUtilTest$C.test2()",ClassUtil.getAnyMethod(A.class, "test2", "test3").toString());
+        System.out.println(ClassUtil.getAllMethods(A.class));
+        assertEquals(3,ClassUtil.getAllMethods(A.class).size());
+        System.out.println(ClassUtil.getAllMethods(A.class, method -> method.getName().equals("test2")));
+        assertEquals(1,ClassUtil.getAllMethods(A.class, method -> method.getName().equals("test2")).size());
+        System.out.println(ClassUtil.getFirstMethod(A.class, method -> method.getName().equals("test3")));
+        assertEquals("D",ClassUtil.getFirstMethod(A.class, method -> method.getName().equals("test3")).getDeclaringClass().getSimpleName());
+    }
+
+    @Test
+    public void testFields() {
+        List<Field> fields = ClassUtil.getAllFields(A.class);
+        fields.forEach(field -> System.out.println(field.getDeclaringClass() + ":" + field.getName()));
+        assertEquals(3, ClassUtil.getAllFields(A.class).size());
+        System.out.println(ClassUtil.getAllFields(A.class, field -> field.getDeclaringClass().getSimpleName().startsWith("E")));
+        assertEquals(1, ClassUtil.getAllFields(A.class, field -> field.getDeclaringClass().getSimpleName().startsWith("E")).size());
+    }
+    @Test
+    public void testGetColumnFields() {
+        TableInfoFactory.getColumnFields(A.class).forEach(field -> System.out.println(field.getDeclaringClass() + ":" + field.getName()));
+        assertEquals(2, TableInfoFactory.getColumnFields(A.class).size());
+    }
+}