chore: adjust path of test utils (#4997)

src/circle/test/demo.spec.js

@@ -1,4 +1,4 @@
 import Demo from '../demo';
-import demoTest from '../../../test/demo-test';
+import { snapshotDemo } from '../../../test/demo';
 
-demoTest(Demo);
+snapshotDemo(Demo);

src/circle/test/index.spec.js

@@ -1,6 +1,6 @@
 import Vue from 'vue';
 import Circle from '..';
-import { mount, later } from '../../../test/utils';
+import { mount, later } from '../../../test';
 
 test('speed is 0', async () => {
   const wrapper = mount(Circle, {