types: test cases typing

src/overlay/test/index.spec.tsx

@@ -1,4 +1,4 @@
-import { mount } from '@vue/test-utils';
+import { mount } from '../../../test';
 import Overlay from '..';
 
 test('should change z-index when using z-index prop', () => {
@@ -9,7 +9,7 @@ test('should change z-index when using z-index prop', () => {
     },
   });
 
-  const overlay = wrapper.find('.van-overlay').element;
+  const overlay = wrapper.find('.van-overlay');
   expect(overlay.style.zIndex).toEqual('99');
 });
 
@@ -35,7 +35,7 @@ test('should allow to custom style with custom-style prop', () => {
     },
   });
 
-  const overlay = wrapper.find('.van-overlay').element;
+  const overlay = wrapper.find('.van-overlay');
   expect(overlay.style.backgroundColor).toEqual('red');
 });
 
@@ -47,7 +47,7 @@ test('should change animation duration when using duration prop', () => {
     },
   });
 
-  const overlay = wrapper.find('.van-overlay').element;
+  const overlay = wrapper.find('.van-overlay');
   expect(overlay.style.animationDuration).toEqual('1s');
 });