[Vue warn]: Unknown custom element: <nuxt-link> - When running jest unit tests
Solution 1
Although the answers provided could work. What I ended up using was based on this guide
const wrapper = mount(TestItem, {
propsData: { item },
localVue,
store,
stubs: {
NuxtLink: true,
// Any other component that you want stubbed
},
});
Solution 2
This is how I was able to get rid of the annoying warning:
Include RouterLinkStub, eg.:
import { shallowMount, createLocalVue, RouterLinkStub } from '@vue/test-utils';
Map NuxtLink stub to RouterLinkStub
const wrapper = shallowMount(TestItem, {
...
stubs: {
NuxtLink: RouterLinkStub
}
})
And in case you were checking nuxt-link text or something, change:
const link = wrapper.find('nuxt-link');
to
const link = wrapper.find(RouterLinkStub);
Found this gold on https://onigra.github.io/blog/2018/03/19/vue-test-utils-router-link-stub/
Good thing you don't need to know japanese to read code...
Solution 3
I added below lines of code to get this working.
- In your test file
import NuxtLink from "path to nuxt-link.js"
Mycomponent.components.NuxtLink = NuxtLink
- In your jest conf file
transformIgnorePatterns: [
"path to nuxt-link.js"
],
Or you could add below line in mount options
mount(Mycomponent, {stubs: ["nuxt-link"]})
Solution 4
I managed to get it working using this workaround for Storybook:
import { mount, createLocalVue } from '@vue/test-utils'
import Component from '@/components/Component.vue'
const localVue = createLocalVue()
localVue.component('nuxt-link', {
props: ['to'],
template: '<a href="#"><slot>NuxtLink</slot></a>',
})
describe('Test Component', () => {
const wrapper = mount(Component, {
stubs: ['nuxt-link'],
localVue
})
})
Solution 5
...
import NuxtLink from '../.nuxt/components/nuxt-link.js'
...
TestItem.components = TestItem.components || {};
TestItem.components.NuxtLink = NuxtLink;
const wrapper = shallow(TestItem, {
...
});
...
Comments
-
Anima-t3d almost 2 years
Problem
I'm using nuxt 1.4 with routing using Jest to do unit testing. My application doesn't throw errors and seems to work perfectly. However when running my unit test
npm run unit
(which runs jest) it throws an error in the terminal:[Vue warn]: Unknown custom element: <nuxt-link> - did you register the component correctly? For recursive components, make sure to provide the "name" option.
Expected
I would expect it to not throw this error since my application is working.
Files
package.json
:{ "name": "vue-starter", "version": "1.0.0", "description": "Nuxt.js project", "private": true, "scripts": { "dev": "nuxt", "build": "nuxt build", "start": "nuxt start", "generate": "nuxt generate", "lint": "eslint --ext .js,.vue --ignore-path .gitignore .", "precommit": "npm run lint", "test": "npm run lint && npm run unit", "unit": "jest", "unit:report": "jest --coverage" }, "dependencies": { "babel-jest": "^22.4.1", "jest-serializer-vue": "^1.0.0", "node-sass": "^4.7.2", "npm": "^5.7.1", "nuxt": "^1.0.0", "sass-loader": "^6.0.7", "vue-jest": "^2.1.1" }, "devDependencies": { "@vue/test-utils": "^1.0.0-beta.12", "babel-eslint": "^8.2.1", "eslint": "^4.15.0", "eslint-friendly-formatter": "^3.0.0", "eslint-loader": "^1.7.1", "eslint-plugin-vue": "^4.0.0", "jest": "^22.4.2" }, "browserslist": [ "> 1%", "last 2 versions", "not ie <= 8" ], "jest": { "moduleFileExtensions": [ "js", "vue" ], "transform": { "^.+\\.js$": "<rootDir>/node_modules/babel-jest", ".*\\.(vue)$": "<rootDir>/node_modules/vue-jest" }, "snapshotSerializers": [ "<rootDir>/node_modules/jest-serializer-vue" ] } }
The component that I test:
<template> <div> <nuxt-link class="name" :to="{ path: `entity/${item.id}`, params: { id: item.id }}">{{item.name}}</nuxt-link> <button class="connect" @click="connect">{{ btnText }}</button> </div> </template> <script> // import nuxtLink from '../.nuxt/components/nuxt-link'; const connectionStatusMap = [ 'Connect', 'Connected', 'Pending', 'Cancel', ]; export default { /*components: { 'nuxt-link': nuxtLink, },*/ props: { item: { type: Object } }, ... } </script>
My test script:
import TestItem from '../components/TestItem'; import { shallow, mount, createLocalVue } from '@vue/test-utils'; import Vuex from 'vuex'; import VueRouter from 'vue-router'; const localVue = createLocalVue() localVue.use(Vuex) localVue.use(VueRouter) ... it(`should show the entity`, () => { const wrapper = mount(TestItem, { propsData: { item }, localVue, store, // stubs: ['nuxt-link'], }) expect(wrapper.find('.name').text()).toBe(item.name); }); it(`should show allow me to connect if I'm not yet connected`, () => { const wrapper = shallow(TestItem, { propsData: { item }, localVue, store, stubs: ['nuxt-link'], }) expect(wrapper.find('.connect').text()).toBe('Connect'); }); ...
I tried
I tried creating a localVue and also stubbing the component as suggested in this github comment I also tried
shallow
/mount
but that did not seem to work either. -
Anima-t3d about 6 yearsThanks for your reply. I now get this error
console.error node_modules/vue/dist/vue.runtime.common.js:589 [Vue warn]: Unknown custom element: <router-link> - did you register the component correctly? For recursive components, make sure to provide the "name" option. (found in <Anonymous>)
But I don't have any router-link element in my app, onlynuxt-link
-
Oldenborg almost 6 years@Anima-t3d did you find a solution to the "router-link" error?. I have the exact same issue.
-
Anima-t3d almost 6 years@Oldenborg I did not yet have the time to try out the solutions. But glad you found yours.
-
MacroMan almost 2 yearsThis has been renamed
shallowMount
now