Running jest with bootstrap-vue

If you're adding bootstrap vue as a global plugin:

Vue.use(BootstrapVue);

Then in your tests, you're likely going to want to follow this tip:

https://vue-test-utils.vuejs.org/guides/common-tips.html#applying-global-plugins-and-mixins

Which outlines how you can use the createLocalVue() and set it up with the same global config as your app:

import { createLocalVue } from '@vue/test-utils'

// create an extended `Vue` constructor
const localVue = createLocalVue()

// install plugins as normal
localVue.use(BootstrapVue)

// pass the `localVue` to the mount options
mount(Component, {
  localVue
})

Then your components should be registered properly-

It is also possible to stub components like

const wrapper = mount(Login, {
  mocks: {
    $t: () => 'Connexion' // i18N
  },
  stubs: {
    BCol: true
  }
});