yiekheng
7039d57a41
Adds two integer columns to the reminders table: * delivery_window_start_hour (default 6) * delivery_window_end_hour (default 18) Both are documented in the operator's timezone. End hour will gate the runtime fire-reminder loop in a later phase; this commit just lands the data model and the pure window-end calculator. windowEndAt(timezone, endHour, fireAt) lives in @cmbot/shared so both bot (window enforcement) and web (ETA preview) can import it. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
51 lines
2.2 KiB
TypeScript
51 lines
2.2 KiB
TypeScript
import { describe, it, expect } from "vitest";
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import { windowEndAt } from "./delivery-window.js";
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const TZ = "Asia/Kuala_Lumpur"; // UTC+8 (no DST)
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describe("windowEndAt", () => {
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it("returns today's end-hour boundary in the given timezone", () => {
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// Fire at 2026-05-10 10:00 KL == 02:00 UTC. End hour 18 == 18:00 KL == 10:00 UTC.
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const fireAt = new Date("2026-05-10T02:00:00.000Z");
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const out = windowEndAt(TZ, 18, fireAt);
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expect(out.toISOString()).toBe("2026-05-10T10:00:00.000Z");
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});
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it("returns a past timestamp when fireAt is already after the end hour", () => {
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// Fire at 2026-05-10 19:00 KL == 11:00 UTC. End hour 18 → today's 18:00 KL == 10:00 UTC.
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const fireAt = new Date("2026-05-10T11:00:00.000Z");
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const out = windowEndAt(TZ, 18, fireAt);
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expect(out.toISOString()).toBe("2026-05-10T10:00:00.000Z");
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expect(out.getTime()).toBeLessThan(fireAt.getTime());
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});
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it("respects the timezone (UTC vs UTC+8)", () => {
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const fireAt = new Date("2026-05-10T02:00:00.000Z");
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const inUtc = windowEndAt("UTC", 18, fireAt);
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expect(inUtc.toISOString()).toBe("2026-05-10T18:00:00.000Z");
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const inKl = windowEndAt("Asia/Kuala_Lumpur", 18, fireAt);
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expect(inKl.toISOString()).toBe("2026-05-10T10:00:00.000Z");
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});
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it("handles end hour 24 as midnight at the calendar day boundary", () => {
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// 2026-05-10 in KL ends at 2026-05-11 00:00 KL == 2026-05-10 16:00 UTC.
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const fireAt = new Date("2026-05-10T02:00:00.000Z");
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const out = windowEndAt(TZ, 24, fireAt);
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expect(out.toISOString()).toBe("2026-05-10T16:00:00.000Z");
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});
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it("DST transition day stays on the same calendar day", () => {
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// US/Eastern starts DST on 2026-03-08; 18:00 EDT is real time.
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// Fire at 2026-03-08 10:00 EST (15:00 UTC). End at 2026-03-08 18:00 EDT (22:00 UTC).
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const fireAt = new Date("2026-03-08T15:00:00.000Z");
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const out = windowEndAt("America/New_York", 18, fireAt);
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expect(out.toISOString()).toBe("2026-03-08T22:00:00.000Z");
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});
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it("rejects end hour outside 0..24", () => {
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const fireAt = new Date("2026-05-10T00:00:00Z");
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expect(() => windowEndAt(TZ, -1, fireAt)).toThrow();
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expect(() => windowEndAt(TZ, 25, fireAt)).toThrow();
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});
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});
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