31 lines
887 B
TypeScript
31 lines
887 B
TypeScript
import { afterEach, describe, expect, it, vi } from "vitest";
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import { createRefreshScheduler } from "./refresh";
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afterEach(() => {
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vi.useRealTimers();
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});
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describe("authoritative refresh scheduler", () => {
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it("refetches on connection and coalesces duplicate notifications", async () => {
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vi.useFakeTimers();
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const refresh = vi.fn();
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const scheduler = createRefreshScheduler(refresh, { delayMs: 25 });
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const event = { type: "page.updated" as const, id: "page", version: 5 };
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scheduler.connected();
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vi.advanceTimersByTime(25);
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expect(refresh).toHaveBeenCalledTimes(1);
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scheduler.notified(event);
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scheduler.notified(event);
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vi.advanceTimersByTime(25);
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expect(refresh).toHaveBeenCalledTimes(2);
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scheduler.connected();
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vi.advanceTimersByTime(25);
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expect(refresh).toHaveBeenCalledTimes(3);
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scheduler.dispose();
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});
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});
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