65 lines
1.2 KiB
TypeScript
65 lines
1.2 KiB
TypeScript
import { value, effect, state } from '../src/index'
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describe('observer/value', () => {
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it('should hold a value', () => {
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const a = value(1)
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expect(a.value).toBe(1)
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a.value = 2
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expect(a.value).toBe(2)
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})
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it('should be reactive', () => {
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const a = value(1)
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let dummy
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effect(() => {
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dummy = a.value
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})
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expect(dummy).toBe(1)
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a.value = 2
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expect(dummy).toBe(2)
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})
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it('should make nested properties reactive', () => {
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const a = value({
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count: 1
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})
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let dummy
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effect(() => {
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dummy = a.value.count
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})
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expect(dummy).toBe(1)
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a.value.count = 2
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expect(dummy).toBe(2)
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})
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it('should work like a normal property when nested in an observable', () => {
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const a = value(1)
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const obj = state({
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a,
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b: {
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c: a,
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d: [a]
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}
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})
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let dummy1
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let dummy2
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let dummy3
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effect(() => {
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dummy1 = obj.a
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dummy2 = obj.b.c
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dummy3 = obj.b.d[0]
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})
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expect(dummy1).toBe(1)
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expect(dummy2).toBe(1)
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expect(dummy3).toBe(1)
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a.value++
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expect(dummy1).toBe(2)
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expect(dummy2).toBe(2)
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expect(dummy3).toBe(2)
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obj.a++
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expect(dummy1).toBe(3)
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expect(dummy2).toBe(3)
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expect(dummy3).toBe(3)
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})
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})
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