diff --git a/components/calendar/__tests__/index.test.js b/components/calendar/__tests__/index.test.js
index 33dc25d249..957031d259 100644
--- a/components/calendar/__tests__/index.test.js
+++ b/components/calendar/__tests__/index.test.js
@@ -10,6 +10,7 @@ import Group from '../../radio/group';
 import Button from '../../radio/radioButton';
 import mountTest from '../../../tests/shared/mountTest';
 import rtlTest from '../../../tests/shared/rtlTest';
+import { render, fireEvent } from '../../../tests/utils';
 
 describe('Calendar', () => {
   mountTest(Calendar);
@@ -40,14 +41,21 @@ describe('Calendar', () => {
   });
 
   it('Calendar should be selectable', () => {
+    MockDate.set(Moment('2000-01-01').valueOf());
+
     const onSelect = jest.fn();
     const onChange = jest.fn();
-    const wrapper = mount(<Calendar onSelect={onSelect} onChange={onChange} />);
-    wrapper.find('.ant-picker-cell').at(0).simulate('click');
+    const { container } = render(<Calendar onSelect={onSelect} onChange={onChange} />);
+
+    fireEvent.click(container.querySelector('.ant-picker-cell'));
     expect(onSelect).toHaveBeenCalledWith(expect.anything());
+
     const value = onSelect.mock.calls[0][0];
     expect(Moment.isMoment(value)).toBe(true);
+
     expect(onChange).toHaveBeenCalled();
+
+    MockDate.reset();
   });
 
   it('only Valid range should be selectable', () => {
diff --git a/components/calendar/generateCalendar.tsx b/components/calendar/generateCalendar.tsx
index f31fff7936..e6c6d4a473 100644
--- a/components/calendar/generateCalendar.tsx
+++ b/components/calendar/generateCalendar.tsx
@@ -139,6 +139,8 @@ function generateCalendar<DateType>(generateConfig: GenerateConfig<DateType>) {
     };
 
     const triggerChange = (date: DateType) => {
+      console.log('trigger change!!!', isSameDate(date, mergedValue));
+      console.log('trigger change!!!', String(date), String(mergedValue));
       setMergedValue(date);
 
       if (!isSameDate(date, mergedValue)) {