Complete Vue.js 2 Web Development_ Practical guide to building end-to-end web development solutions with Vue.js 2

Large Application Patterns with Vuex Chapter 18

}).forEach(item => {

item.done = true

})

state.archived.filter(item => {

return item.id === itemId

}).forEach(item => {

item.done = true

})

}

}

})

export default store

You have to extract it to something similar to this:

export const mutations = { ... }

const store = new Vuex.Store({ ... })

export default store

This way, you can import the mutations in your test files with the following line:

import { mutations } from '@/store'

The test for requirement number 1 can be written as follows:

describe('mutations', () => {

it(`MARK_ITEM_AS_DONE mutation must change the

done field from false to true for a todo`, () => {

const state = {

todo: [

{ id: 43, text: 'Buy iPhone', done: false }

],

archived: [

{ id: 40, text: 'Buy cat', done: false }

]

}

mutations.MARK_ITEM_AS_DONE(state, 43)

expect(state.todo[0].done).to.be.true

})

})