80 lines
2.1 KiB
TypeScript
80 lines
2.1 KiB
TypeScript
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import { observable, isObservable, autorun, unwrap } from '../../src'
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describe('WeakSet', () => {
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it('instanceof', () => {
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const original = new Set()
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const observed = observable(original)
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expect(isObservable(observed)).toBe(true)
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expect(original instanceof Set).toBe(true)
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expect(observed instanceof Set).toBe(true)
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})
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it('should observe mutations', () => {
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let dummy
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const value = {}
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const set = observable(new WeakSet())
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autorun(() => (dummy = set.has(value)))
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expect(dummy).toBe(false)
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set.add(value)
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expect(dummy).toBe(true)
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set.delete(value)
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expect(dummy).toBe(false)
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})
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it('should not observe custom property mutations', () => {
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let dummy
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const set: any = observable(new WeakSet())
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autorun(() => (dummy = set.customProp))
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expect(dummy).toBe(undefined)
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set.customProp = 'Hello World'
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expect(dummy).toBe(undefined)
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})
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it('should not observe non value changing mutations', () => {
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let dummy
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const value = {}
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const set = observable(new WeakSet())
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const setSpy = jest.fn(() => (dummy = set.has(value)))
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autorun(setSpy)
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(1)
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set.add(value)
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expect(dummy).toBe(true)
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expect(setSpy).toHaveBeenCalledTimes(2)
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set.add(value)
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expect(dummy).toBe(true)
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expect(setSpy).toHaveBeenCalledTimes(2)
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set.delete(value)
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(3)
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set.delete(value)
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(3)
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})
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it('should not observe raw data', () => {
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const value = {}
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let dummy
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const set = observable(new WeakSet())
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autorun(() => (dummy = unwrap(set).has(value)))
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expect(dummy).toBe(false)
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set.add(value)
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expect(dummy).toBe(false)
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})
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it('should not be triggered by raw mutations', () => {
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const value = {}
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let dummy
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const set = observable(new WeakSet())
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autorun(() => (dummy = set.has(value)))
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expect(dummy).toBe(false)
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unwrap(set).add(value)
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expect(dummy).toBe(false)
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})
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})
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