Julien Valverdé
41 lines
1.3 KiB
TypeScript
41 lines
1.3 KiB
TypeScript
import { describe, expect, it, vi } from "vitest"
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import * as Refreshable from "../src/Refreshable.js"
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describe("Refreshable", () => {
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it("attaches a cell and notifies subscribers after a compatible update", async () => {
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const first = {}
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const cell = Refreshable.makeCell(first, "hooks", false)
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const listener = vi.fn()
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expect(Refreshable.isRefreshable(first)).toBe(false)
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const attached = Refreshable.attach(first, cell)
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expect(attached).toBe(first)
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expect(Refreshable.isRefreshable(first)).toBe(true)
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expect(attached[Refreshable.RefreshableTypeId]).toBe(cell)
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cell.subscribe(listener)
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const second = {}
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cell.update(second, "hooks", false)
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expect(cell.current).toBe(second)
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expect(cell.snapshot).toEqual({
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revision: 1,
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resetRevision: 0,
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})
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await Promise.resolve()
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expect(listener).toHaveBeenCalledTimes(1)
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})
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it("requests a remount when a signature changes or reset is forced", () => {
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const cell = Refreshable.makeCell({}, "one", false)
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cell.update({}, "two", false)
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expect(cell.snapshot.resetRevision).toBe(1)
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cell.update({}, "two", true)
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expect(cell.snapshot.resetRevision).toBe(2)
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})
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})
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