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import Vue from 'vue'
describe('Instance properties', () => {
it('$data', () => {
const data = { a: 1 }
const vm = new Vue({
data
})
expect(vm.a).toBe(1)
expect(vm.$data).toBe(data)
// vm -> data
vm.a = 2
expect(data.a).toBe(2)
// data -> vm
data.a = 3
expect(vm.a).toBe(3)
})
it('$options', () => {
const A = Vue.extend({
methods: {
a () {}
}
})
const vm = new A({
methods: {
b () {}
}
})
expect(typeof vm.$options.methods.a).toBe('function')
expect(typeof vm.$options.methods.b).toBe('function')
})
it('$root/$children', done => {
const vm = new Vue({
template: '<div><test v-if="ok"></test></div>',
data: { ok: true },
components: {
test: {
template: '<div></div>'
}
}
}).$mount()
expect(vm.$root).toBe(vm)
expect(vm.$children.length).toBe(1)
expect(vm.$children[0].$root).toBe(vm)
vm.ok = false
waitForUpdate(() => {
expect(vm.$children.length).toBe(0)
vm.ok = true
}).then(() => {
expect(vm.$children.length).toBe(1)
expect(vm.$children[0].$root).toBe(vm)
}).then(done)
})
it('$isServer', () => {
const vm = new Vue()
expect(vm.$isServer).toBe(false)
Vue.config._isServer = true
expect(vm.$isServer).toBe(true)
Vue.config._isServer = false
})
})