Jest 单元测试 Vue 项目中引入的 mint-ui 报错

import {createLocalVue, mount} from '@vue/test-utils' import inputCheckData from '@/pages/health/inputCheckData' import MintUI from 'mint-ui';  const localVue = createLocalVue() localVue.use(MintUI)  describe('health/inputCheckData.vue', () => {   it('check query', () => {     const $route = {       query: {         id: 1       }     }     const wrapper = mount(inputCheckData, {       localVue,       mocks: {         $route       }     })     expect(wrapper.vm.$route.query.id).toBe(1)     expect(wrapper.vm.$data.type).toBe(1)   }) }) 

Test suite failed to run      TypeError: Cannot read property 'toLowerCase' of undefined      > 1 | import {createLocalVue, mount} from '@vue/test-utils'       2 | import inputCheckData from '@/pages/health/inputCheckData'       3 | import MintUI from 'mint-ui';       4 |               at Object.<anonymous> (node_modules/mint-ui/lib/index.js:3:197)       at e (node_modules/mint-ui/lib/index.js:1:447)       at Object.<anonymous> (node_modules/mint-ui/lib/index.js:2:2834)       at e (node_modules/mint-ui/lib/index.js:1:447)       at Object.<anonymous> (node_modules/mint-ui/lib/index.js:3:19753)       at e (node_modules/mint-ui/lib/index.js:1:447)       at Object.<anonymous> (node_modules/mint-ui/lib/index.js:2:9215)       at e (node_modules/mint-ui/lib/index.js:1:447)       at Object.<anonymous> (node_modules/mint-ui/lib/index.js:3:19848)       at e (node_modules/mint-ui/lib/index.js:1:447)       at Object.<anonymous> (node_modules/mint-ui/lib/index.js:1:6914)       at e (node_modules/mint-ui/lib/index.js:1:447)       at Object.<anonymous> (node_modules/mint-ui/lib/index.js:1:8192)       at e (node_modules/mint-ui/lib/index.js:1:447)       at Object.<anonymous> (node_modules/mint-ui/lib/index.js:4:12126)       at e (node_modules/mint-ui/lib/index.js:1:447)       at node_modules/mint-ui/lib/index.js:1:830       at node_modules/mint-ui/lib/index.js:1:841       at node_modules/mint-ui/lib/index.js:1:170       at Object.<anonymous> (node_modules/mint-ui/lib/index.js:1:323)       at Object.<anonymous> (test/unit/health/inputCheckData.test.js:1:114) 

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