test: fix test case

components/popconfirm/__tests__/index.test.js

 import React from 'react';
 import { mount } from 'enzyme';
+import { spyElementPrototype } from 'rc-util/lib/test/domHook';
 import Popconfirm from '..';
 import mountTest from '../../../tests/shared/mountTest';
 import { sleep } from '../../../tests/utils';
@@ -14,6 +15,12 @@ describe('Popconfirm', () => {
     preventDefault: expect.any(Function),
   });
 
+  beforeAll(() => {
+    spyElementPrototype(HTMLElement, 'offsetParent', {
+      get: () => ({}),
+    });
+  });
+
   it('should popup Popconfirm dialog', () => {
     const onVisibleChange = jest.fn();
 

components/tooltip/__tests__/tooltip.test.js

 import React from 'react';
 import { mount } from 'enzyme';
+import { spyElementPrototype } from 'rc-util/lib/test/domHook';
 import Tooltip from '..';
 import Button from '../../button';
 import Switch from '../../switch';
@@ -15,6 +16,12 @@ describe('Tooltip', () => {
   mountTest(Tooltip);
   rtlTest(Tooltip);
 
+  beforeAll(() => {
+    spyElementPrototype(HTMLElement, 'offsetParent', {
+      get: () => ({}),
+    });
+  });
+
   it('check `onVisibleChange` arguments', () => {
     const onVisibleChange = jest.fn();
     const ref = React.createRef();