fix code

hutool-core/src/test/java/cn/hutool/core/lang/func/LambdaUtilTest.java

@@ -36,6 +36,14 @@ public class LambdaUtilTest {
 		Assert.assertEquals(MyTeacher.class, aClass);
 	}
 
+	@Test
+	public void getInstantiatedClassTest() {
+		// 类方法引用，相当于获取的方法引用是：MyTeacher.getAge(this)
+		// 因此此处会匹配到Func1，其参数就是this
+		Class<MyTeacher> aClass = LambdaUtil.getInstantiatedClass(MyTeacher::getAge);
+		Assert.assertEquals(MyTeacher.class, aClass);
+	}
+
 	@Data
 	static class MyTeacher {
 

hutool-core/src/test/java/cn/hutool/core/util/EnumUtilTest.java

@@ -44,8 +44,11 @@ public class EnumUtilTest {
 	@Test
 	public void getFieldByTest() {
 		// 枚举中字段互相映射使用
-		String type = EnumUtil.getFieldBy(TestEnum::getType, TestEnum::ordinal, 1);
+		String type = EnumUtil.getFieldBy(TestEnum::getType, Enum::ordinal, 1);
 		Assert.assertEquals("type2", type);
+
+		int ordinal = EnumUtil.getFieldBy(TestEnum::ordinal, Enum::ordinal, 1);
+		Assert.assertEquals(1, ordinal);
 	}
 
 	@Test
@@ -75,6 +78,7 @@ public class EnumUtilTest {
 		}
 
 		private final String type;
+		@SuppressWarnings("unused")
 		private String name;
 
 		public String getType() {