/
manual.js
145 lines (118 loc) · 3.06 KB
/
manual.js
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"use strict"
import {
setUseProxies,
createDraft,
finishDraft,
produce,
isDraft,
enableAllPlugins
} from "../src/immer"
enableAllPlugins()
const isProd = process.env.NODE_ENV === "production"
runTests("proxy", true)
runTests("es5", false)
function runTests(name, useProxies) {
describe("manual - " + name, () => {
beforeAll(() => {
setUseProxies(useProxies)
})
it("should check arguments", () => {
expect(() => createDraft(3)).toThrowErrorMatchingSnapshot()
const buf = new Buffer([])
expect(() => createDraft(buf)).toThrowErrorMatchingSnapshot()
expect(() => finishDraft({})).toThrowErrorMatchingSnapshot()
})
it("should support manual drafts", () => {
const state = [{}, {}, {}]
const draft = createDraft(state)
draft.forEach((item, index) => {
item.index = index
})
const result = finishDraft(draft)
expect(result).not.toBe(state)
expect(result).toEqual([{index: 0}, {index: 1}, {index: 2}])
expect(state).toEqual([{}, {}, {}])
})
if (!isProd)
it("cannot modify after finish", () => {
const state = {a: 1}
const draft = createDraft(state)
draft.a = 2
expect(finishDraft(draft)).toEqual({a: 2})
expect(() => {
draft.a = 3
}).toThrowErrorMatchingSnapshot()
})
it("should support patches drafts", () => {
const state = {a: 1}
const draft = createDraft(state)
draft.a = 2
draft.b = 3
const listener = jest.fn()
const result = finishDraft(draft, listener)
expect(result).not.toBe(state)
expect(result).toEqual({a: 2, b: 3})
expect(listener.mock.calls).toMatchSnapshot()
})
it("should handle multiple create draft calls", () => {
const state = {a: 1}
const draft = createDraft(state)
draft.a = 2
const draft2 = createDraft(state)
draft2.b = 3
const result = finishDraft(draft)
expect(result).not.toBe(state)
expect(result).toEqual({a: 2})
draft2.a = 4
const result2 = finishDraft(draft2)
expect(result2).not.toBe(result)
expect(result2).toEqual({a: 4, b: 3})
})
it("combines with produce - 1", () => {
const state = {a: 1}
const draft = createDraft(state)
draft.a = 2
const res1 = produce(draft, d => {
d.b = 3
})
draft.b = 4
const res2 = finishDraft(draft)
expect(res1).toEqual({a: 2, b: 3})
expect(res2).toEqual({a: 2, b: 4})
})
it("combines with produce - 2", () => {
const state = {a: 1}
const res1 = produce(state, draft => {
draft.b = 3
const draft2 = createDraft(draft)
draft.c = 4
draft2.d = 5
const res2 = finishDraft(draft2)
expect(res2).toEqual({
a: 1,
b: 3,
d: 5
})
draft.d = 2
})
expect(res1).toEqual({
a: 1,
b: 3,
c: 4,
d: 2
})
})
!global.USES_BUILD &&
it("should not finish drafts from produce", () => {
produce({x: 1}, draft => {
expect(() => finishDraft(draft)).toThrowErrorMatchingSnapshot()
})
})
it("should not finish twice", () => {
const draft = createDraft({a: 1})
draft.a++
finishDraft(draft)
expect(() => finishDraft(draft)).toThrowErrorMatchingSnapshot()
})
})
}