355 lines
10 KiB
TypeScript
355 lines
10 KiB
TypeScript
import {
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observable,
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immutable,
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unwrap,
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isObservable,
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isImmutable,
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markNonReactive,
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markImmutable,
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lock,
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unlock,
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autorun
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} from '../src'
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describe('observer/immutable', () => {
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let warn: any
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beforeEach(() => {
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warn = jest.spyOn(console, 'warn')
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warn.mockImplementation(() => {})
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})
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afterEach(() => {
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warn.mockRestore()
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})
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describe('Object', () => {
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it('should make nested values immutable', () => {
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const original = { foo: 1, bar: { baz: 2 } }
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const observed = immutable(original)
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expect(observed).not.toBe(original)
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expect(isObservable(observed)).toBe(true)
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expect(isImmutable(observed)).toBe(true)
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expect(isObservable(original)).toBe(false)
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expect(isImmutable(original)).toBe(false)
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expect(isObservable(observed.bar)).toBe(true)
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expect(isImmutable(observed.bar)).toBe(true)
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expect(isObservable(original.bar)).toBe(false)
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expect(isImmutable(original.bar)).toBe(false)
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// get
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expect(observed.foo).toBe(1)
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// has
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expect('foo' in observed).toBe(true)
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// ownKeys
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expect(Object.keys(observed)).toEqual(['foo', 'bar'])
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})
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it('should not allow mutation', () => {
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const observed = immutable({ foo: 1, bar: { baz: 2 } })
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observed.foo = 2
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expect(observed.foo).toBe(1)
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expect(warn).toHaveBeenCalledTimes(1)
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observed.bar.baz = 3
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expect(observed.bar.baz).toBe(2)
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expect(warn).toHaveBeenCalledTimes(2)
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delete observed.foo
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expect(observed.foo).toBe(1)
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expect(warn).toHaveBeenCalledTimes(3)
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delete observed.bar.baz
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expect(observed.bar.baz).toBe(2)
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expect(warn).toHaveBeenCalledTimes(4)
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})
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it('should allow mutation when unlocked', () => {
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const observed: any = immutable({ foo: 1, bar: { baz: 2 } })
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unlock()
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observed.prop = 2
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observed.bar.qux = 3
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delete observed.bar.baz
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delete observed.foo
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lock()
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expect(observed.prop).toBe(2)
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expect(observed.foo).toBeUndefined()
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expect(observed.bar.qux).toBe(3)
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expect('baz' in observed.bar).toBe(false)
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expect(warn).not.toHaveBeenCalled()
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})
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it('should not trigger autoruns when locked', () => {
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const observed = immutable({ a: 1 })
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let dummy
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autorun(() => {
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dummy = observed.a
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})
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expect(dummy).toBe(1)
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observed.a = 2
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expect(observed.a).toBe(1)
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expect(dummy).toBe(1)
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})
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it('should trigger autoruns when unlocked', () => {
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const observed = immutable({ a: 1 })
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let dummy
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autorun(() => {
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dummy = observed.a
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})
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expect(dummy).toBe(1)
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unlock()
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observed.a = 2
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lock()
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expect(observed.a).toBe(2)
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expect(dummy).toBe(2)
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})
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})
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describe('Array', () => {
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it('should make nested values immutable', () => {
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const original: any[] = [{ foo: 1 }]
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const observed = immutable(original)
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expect(observed).not.toBe(original)
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expect(isObservable(observed)).toBe(true)
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expect(isImmutable(observed)).toBe(true)
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expect(isObservable(original)).toBe(false)
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expect(isImmutable(original)).toBe(false)
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expect(isObservable(observed[0])).toBe(true)
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expect(isImmutable(observed[0])).toBe(true)
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expect(isObservable(original[0])).toBe(false)
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expect(isImmutable(original[0])).toBe(false)
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// get
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expect(observed[0].foo).toBe(1)
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// has
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expect(0 in observed).toBe(true)
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// ownKeys
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expect(Object.keys(observed)).toEqual(['0'])
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})
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it('should not allow mutation', () => {
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const observed: any = immutable([{ foo: 1 }])
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observed[0] = 1
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expect(observed[0]).not.toBe(1)
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expect(warn).toHaveBeenCalledTimes(1)
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observed[0].foo = 2
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expect(observed[0].foo).toBe(1)
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expect(warn).toHaveBeenCalledTimes(2)
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// should block length mutation
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observed.length = 0
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expect(observed.length).toBe(1)
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expect(observed[0].foo).toBe(1)
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expect(warn).toHaveBeenCalledTimes(3)
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// mutation methods invoke set/length internally and thus are blocked as well
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observed.push(2)
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expect(observed.length).toBe(1)
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// push triggers two warnings on [1] and .length
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expect(warn).toHaveBeenCalledTimes(5)
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})
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it('should allow mutation when unlocked', () => {
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const observed: any[] = immutable([{ foo: 1, bar: { baz: 2 } }])
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unlock()
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observed[1] = 2
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observed.push(3)
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observed[0].foo = 2
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observed[0].bar.baz = 3
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lock()
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expect(observed.length).toBe(3)
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expect(observed[1]).toBe(2)
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expect(observed[2]).toBe(3)
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expect(observed[0].foo).toBe(2)
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expect(observed[0].bar.baz).toBe(3)
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expect(warn).not.toHaveBeenCalled()
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})
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it('should not trigger autoruns when locked', () => {
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const observed = immutable([{ a: 1 }])
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let dummy
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autorun(() => {
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dummy = observed[0].a
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})
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expect(dummy).toBe(1)
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observed[0].a = 2
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expect(observed[0].a).toBe(1)
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expect(dummy).toBe(1)
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observed[0] = { a: 2 }
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expect(observed[0].a).toBe(1)
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expect(dummy).toBe(1)
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})
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it('should trigger autoruns when unlocked', () => {
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const observed = immutable([{ a: 1 }])
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let dummy
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autorun(() => {
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dummy = observed[0].a
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})
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expect(dummy).toBe(1)
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unlock()
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observed[0].a = 2
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expect(observed[0].a).toBe(2)
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expect(dummy).toBe(2)
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observed[0] = { a: 3 }
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expect(observed[0].a).toBe(3)
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expect(dummy).toBe(3)
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observed.unshift({ a: 4 })
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expect(observed[0].a).toBe(4)
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expect(dummy).toBe(4)
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lock()
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})
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})
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const maps = [Map, WeakMap]
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maps.forEach((Collection: any) => {
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describe(Collection.name, () => {
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test('should make nested values immutable', () => {
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const key1 = {}
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const key2 = {}
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const original = new Collection([[key1, {}], [key2, {}]])
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const observed = immutable(original)
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expect(observed).not.toBe(original)
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expect(isObservable(observed)).toBe(true)
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expect(isImmutable(observed)).toBe(true)
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expect(isObservable(original)).toBe(false)
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expect(isImmutable(original)).toBe(false)
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expect(isObservable(observed.get(key1))).toBe(true)
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expect(isImmutable(observed.get(key1))).toBe(true)
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expect(isObservable(original.get(key1))).toBe(false)
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expect(isImmutable(original.get(key1))).toBe(false)
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})
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test('should not allow mutation & not trigger autorun', () => {
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const map = immutable(new Collection())
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const key = {}
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let dummy
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autorun(() => {
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dummy = map.get(key)
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})
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expect(dummy).toBeUndefined()
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map.set(key, 1)
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expect(dummy).toBeUndefined()
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expect(map.has(key)).toBe(false)
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expect(warn).toHaveBeenCalledTimes(1)
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})
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test('should allow mutation & trigger autorun when unlocked', () => {
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const map = immutable(new Collection())
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const isWeak = Collection === WeakMap
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const key = {}
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let dummy
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autorun(() => {
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dummy = map.get(key) + (isWeak ? 0 : map.size)
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})
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expect(dummy).toBeNaN()
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unlock()
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map.set(key, 1)
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lock()
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expect(dummy).toBe(isWeak ? 1 : 2)
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expect(map.get(key)).toBe(1)
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expect(warn).not.toHaveBeenCalled()
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})
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})
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})
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const sets = [Set, WeakSet]
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sets.forEach((Collection: any) => {
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describe(Collection.name, () => {
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test('should make nested values immutable', () => {
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const key1 = {}
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const key2 = {}
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const original = new Collection([key1, key2])
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const observed = immutable(original)
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expect(observed).not.toBe(original)
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expect(isObservable(observed)).toBe(true)
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expect(isImmutable(observed)).toBe(true)
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expect(isObservable(original)).toBe(false)
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expect(isImmutable(original)).toBe(false)
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expect(observed.has(observable(key1))).toBe(true)
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expect(original.has(observable(key1))).toBe(false)
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})
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test('should not allow mutation & not trigger autorun', () => {
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const set = immutable(new Collection())
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const key = {}
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let dummy
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autorun(() => {
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dummy = set.has(key)
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})
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expect(dummy).toBe(false)
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set.add(key)
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expect(dummy).toBe(false)
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expect(set.has(key)).toBe(false)
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expect(warn).toHaveBeenCalledTimes(1)
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})
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test('should allow mutation & trigger autorun when unlocked', () => {
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const set = immutable(new Collection())
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const key = {}
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let dummy
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autorun(() => {
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dummy = set.has(key)
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})
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expect(dummy).toBe(false)
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unlock()
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set.add(key)
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lock()
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expect(dummy).toBe(true)
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expect(set.has(key)).toBe(true)
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expect(warn).not.toHaveBeenCalled()
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})
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})
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})
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test('calling observable on an immutable should return immutable', () => {
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const a = immutable()
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const b = observable(a)
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expect(isImmutable(b)).toBe(true)
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// should point to same original
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expect(unwrap(a)).toBe(unwrap(b))
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})
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test('calling immutable on an observable should return immutable', () => {
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const a = observable()
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const b = immutable(a)
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expect(isImmutable(b)).toBe(true)
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// should point to same original
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expect(unwrap(a)).toBe(unwrap(b))
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})
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test('observing already observed value should return same Proxy', () => {
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const original = { foo: 1 }
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const observed = immutable(original)
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const observed2 = immutable(observed)
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expect(observed2).toBe(observed)
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})
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test('observing the same value multiple times should return same Proxy', () => {
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const original = { foo: 1 }
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const observed = immutable(original)
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const observed2 = immutable(original)
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expect(observed2).toBe(observed)
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})
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test('markNonReactive', () => {
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const obj = immutable({
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foo: { a: 1 },
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bar: markNonReactive({ b: 2 })
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})
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expect(isObservable(obj.foo)).toBe(true)
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expect(isObservable(obj.bar)).toBe(false)
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})
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test('markImmutable', () => {
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const obj = observable({
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foo: { a: 1 },
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bar: markImmutable({ b: 2 })
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})
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expect(isObservable(obj.foo)).toBe(true)
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expect(isObservable(obj.bar)).toBe(true)
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expect(isImmutable(obj.foo)).toBe(false)
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expect(isImmutable(obj.bar)).toBe(true)
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})
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})
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