-
-
Notifications
You must be signed in to change notification settings - Fork 33.6k
/
watcher.spec.js
181 lines (168 loc) · 4.75 KB
/
watcher.spec.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
import Vue from 'vue'
import Watcher from 'core/observer/watcher'
describe('Watcher', () => {
let vm, spy
beforeEach(() => {
vm = new Vue({
template: '<div></div>',
data: {
a: 1,
b: {
c: 2,
d: 4
},
c: 'c',
msg: 'yo'
}
}).$mount()
spy = jasmine.createSpy('watcher')
})
it('path', done => {
const watcher = new Watcher(vm, 'b.c', spy)
expect(watcher.value).toBe(2)
vm.b.c = 3
waitForUpdate(() => {
expect(watcher.value).toBe(3)
expect(spy).toHaveBeenCalledWith(3, 2)
vm.b = { c: 4 } // swapping the object
}).then(() => {
expect(watcher.value).toBe(4)
expect(spy).toHaveBeenCalledWith(4, 3)
}).then(done)
})
it('non-existent path, set later', done => {
const watcher1 = new Watcher(vm, 'b.e', spy)
expect(watcher1.value).toBeUndefined()
// check $add should not affect isolated children
const child2 = new Vue({ parent: vm })
const watcher2 = new Watcher(child2, 'b.e', spy)
expect(watcher2.value).toBeUndefined()
Vue.set(vm.b, 'e', 123)
waitForUpdate(() => {
expect(watcher1.value).toBe(123)
expect(watcher2.value).toBeUndefined()
expect(spy.calls.count()).toBe(1)
expect(spy).toHaveBeenCalledWith(123, undefined)
}).then(done)
})
it('delete', done => {
const watcher = new Watcher(vm, 'b.c', spy)
expect(watcher.value).toBe(2)
Vue.delete(vm.b, 'c')
waitForUpdate(() => {
expect(watcher.value).toBeUndefined()
expect(spy).toHaveBeenCalledWith(undefined, 2)
}).then(done)
})
it('path containing $data', done => {
const watcher = new Watcher(vm, '$data.b.c', spy)
expect(watcher.value).toBe(2)
vm.b = { c: 3 }
waitForUpdate(() => {
expect(watcher.value).toBe(3)
expect(spy).toHaveBeenCalledWith(3, 2)
vm.$data.b.c = 4
}).then(() => {
expect(watcher.value).toBe(4)
expect(spy).toHaveBeenCalledWith(4, 3)
}).then(done)
})
it('deep watch', done => {
let oldB
new Watcher(vm, 'b', spy, {
deep: true
})
vm.b.c = { d: 4 }
waitForUpdate(() => {
expect(spy).toHaveBeenCalledWith(vm.b, vm.b)
oldB = vm.b
vm.b = { c: [{ a: 1 }] }
}).then(() => {
expect(spy).toHaveBeenCalledWith(vm.b, oldB)
expect(spy.calls.count()).toBe(2)
vm.b.c[0].a = 2
}).then(() => {
expect(spy).toHaveBeenCalledWith(vm.b, vm.b)
expect(spy.calls.count()).toBe(3)
}).then(done)
})
it('deep watch $data', done => {
new Watcher(vm, '$data', spy, {
deep: true
})
vm.b.c = 3
waitForUpdate(() => {
expect(spy).toHaveBeenCalledWith(vm.$data, vm.$data)
}).then(done)
})
it('deep watch with circular references', done => {
new Watcher(vm, 'b', spy, {
deep: true
})
Vue.set(vm.b, '_', vm.b)
waitForUpdate(() => {
expect(spy).toHaveBeenCalledWith(vm.b, vm.b)
expect(spy.calls.count()).toBe(1)
vm.b._.c = 1
}).then(() => {
expect(spy).toHaveBeenCalledWith(vm.b, vm.b)
expect(spy.calls.count()).toBe(2)
}).then(done)
})
it('fire change for prop addition/deletion in non-deep mode', done => {
new Watcher(vm, 'b', spy)
Vue.set(vm.b, 'e', 123)
waitForUpdate(() => {
expect(spy).toHaveBeenCalledWith(vm.b, vm.b)
expect(spy.calls.count()).toBe(1)
Vue.delete(vm.b, 'e')
}).then(() => {
expect(spy.calls.count()).toBe(2)
}).then(done)
})
it('watch function', done => {
const watcher = new Watcher(vm, function () {
return this.a + this.b.d
}, spy)
expect(watcher.value).toBe(5)
vm.a = 2
waitForUpdate(() => {
expect(spy).toHaveBeenCalledWith(6, 5)
vm.b = { d: 2 }
}).then(() => {
expect(spy).toHaveBeenCalledWith(4, 6)
}).then(done)
})
it('lazy mode', done => {
const watcher = new Watcher(vm, function () {
return this.a + this.b.d
}, null, { lazy: true })
expect(watcher.lazy).toBe(true)
expect(watcher.value).toBeUndefined()
expect(watcher.dirty).toBe(true)
watcher.evaluate()
expect(watcher.value).toBe(5)
expect(watcher.dirty).toBe(false)
vm.a = 2
waitForUpdate(() => {
expect(watcher.value).toBe(5)
expect(watcher.dirty).toBe(true)
watcher.evaluate()
expect(watcher.value).toBe(6)
expect(watcher.dirty).toBe(false)
}).then(done)
})
it('teardown', done => {
const watcher = new Watcher(vm, 'b.c', spy)
watcher.teardown()
vm.b.c = 3
waitForUpdate(() => {
expect(watcher.active).toBe(false)
expect(spy).not.toHaveBeenCalled()
}).then(done)
})
it('warn not support path', () => {
new Watcher(vm, 'd.e + c', spy)
expect('Failed watching path:').toHaveBeenWarned()
})
})