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import Vue from 'vue'
const mergeOptions = Vue.util.mergeOptions
describe('Options mixins', () => {
it('vm should have options from mixin', () => {
const mixin = {
directives: {
c: {}
},
methods: {
a: function () {}
}
}
const vm = new Vue({
mixins: [mixin],
methods: {
b: function () {}
}
}).$mount()
expect(vm.a).toBeDefined()
expect(vm.b).toBeDefined()
expect(vm.$options.directives.c).toBeDefined()
})
it('should call hooks from mixins first', () => {
const a = {}
const b = {}
const c = {}
const f1 = function () {}
const f2 = function () {}
const f3 = function () {}
const mixinA = {
a: 1,
template: 'foo',
directives: {
a: a
},
created: f1
}
const mixinB = {
b: 1,
directives: {
b: b
},
created: f2
}
const result = mergeOptions({}, {
directives: {
c: c
},
template: 'bar',
mixins: [mixinA, mixinB],
created: f3
})
expect(result.a).toBe(1)
expect(result.b).toBe(1)
expect(result.directives.a).toBe(a)
expect(result.directives.b).toBe(b)
expect(result.directives.c).toBe(c)
expect(result.created[0]).toBe(f1)
expect(result.created[1]).toBe(f2)
expect(result.created[2]).toBe(f3)
expect(result.template).toBe('bar')
})
it('mixin methods should not override defined method', () => {
const f1 = function () {}
const f2 = function () {}
const f3 = function () {}
const mixinA = {
methods: {
xyz: f1
}
}
const mixinB = {
methods: {
xyz: f2
}
}
const result = mergeOptions({}, {
mixins: [mixinA, mixinB],
methods: {
xyz: f3
}
})
expect(result.methods.xyz).toBe(f3)
})
})