残端子组件似乎已呈现，并在Jest中引发错误

如何解决残端子组件似乎已呈现，并在Jest中引发错误

Jest测试应该测试FileInput组件，该组件包含ConfirmationDialog组件作为子组件。而DialogBase组件是ConfirmationDialog的子组件。 测试是绿色的，但会引发错误，即使对ConfirmationDialog进行了存根并且对$ vuetify对象进行了模拟，它也无法读取未定义的属性lang。

文件输入组件（由于公司限制，我无法发布整个组件代码）；

<template>

<confirmation-dialog
      v-model="deleteDialog"
      :title="`${$vuetify.lang.t('$vuetify.shared.confirmDeleteDialogTitle')}`"
      :description="
        `${$vuetify.lang.t('$vuetify.announcementManager.promptManagament.confirmDeleteText')}`
      "
      :confirmResultValue="deleteDialogKey"
      @confirm="deletePrompt"
      @cancel="cancelDeletion"
    />

</template>
<script lang="ts">

  @Component({
    components: {
      ConfirmationDialog: () =>
        import(
          '../../../presentation/dialogs/ConfirmationDialog/Shared.ConfirmationDialogComponent.vue'
        ),},})
  export default class FileInputComponent extends InputComponentBase {

    private deleteDialog: boolean;
    private deleteDialogKey: string;

    constructor() {
      super();
      this.deleteDialog = false;
      this.deleteDialogKey = '';
    }

    deletePrompt(languageKey: string) {
      //deletes the prompt
    }

    cancelDeletion() {
      //cancels deletion
    }
  }
</script>

笑话测试：

     beforeEach(() => {
       localVue = createLocalVue();
       const vuetify = new Vuetify();

       localVue.use(Vuex);
       localVue.use(vuetify);
     });

     it('Test',() => {
        const wrapper = shallowMount(FileInput,{
          localVue,stubs: {
            'dialog-base': true,'confirmation-dialog': true,mocks: {
            $vuetify: {
              lang: {
                t: (val: string) => val,locales: {} as LangLocales,current: '',});
      });

错误：

console.error node_modules/vue/dist/vue.runtime.common.dev.js:621
    [Vue warn]: Error in render: "TypeError: Cannot read property 'lang' of undefined"
    
    found in
    
    ---> <DialogBaseComponent>
           <ConfirmationDialog>
             <VRow>
               <FileInputComponent>
                 <Root>

  console.error node_modules/vue/dist/vue.runtime.common.dev.js:1884
    TypeError: Cannot read property 'lang' of undefined
        at fn (C:\webapp\src\modules\shared\presentation\dialogs\ConfirmationDialog\Shared.ConfirmationDialogComponent.vue:1153:53)
        at normalized (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:2584:37)
        at Proxy.renderSlot (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:2680:13)
        at Proxy.render (C:\webapp\src\modules\shared\presentation\dialogs\DialogBase\Shared.DialogBaseComponent.vue:1395:277)
        at VueComponent.Vue._render (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:3538:22)
        at VueComponent.updateComponent (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:4054:21)
        at Watcher.get (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:4465:25)
        at new Watcher (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:4454:12)
        at mountComponent (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:4061:3)
        at VueComponent.Object.<anonymous>.Vue.$mount (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:8392:10)
        at init (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:3112:13)
        at createComponent (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:5958:9)
        at createElm (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:5905:9)
        at VueComponent.patch [as __patch__] (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:6494:9)
        at VueComponent.Vue._update (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:3936:19)
        at VueComponent.updateComponent (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:4054:10)
        at Watcher.get (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:4465:25)
        at Watcher.run (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:4540:22)
        at flushSchedulerQueue (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:4298:13)
        at Array.<anonymous> (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:1976:12)
        at flushCallbacks (C:\webapp\node_modules\vue\dist\vue.runtime.common.dev.js:1902:14)
        at processticksAndRejections (internal/process/task_queues.js:97:5)