Lucas WintherandClaude Opus 5
caefe6b0d7
Every date function returns null rather than inferring a missing year, month or end date. A source that does not state an end yields endsAt: null, never a plausible guess — a confidently wrong end date is the failure this product exists to prevent. Handles the three formats seen on Game8: "August 12, 2026", "August 12 - September 21, 2026" (year applies to both ends, rolling the start back when the range crosses New Year), and a slash datetime range. Abbreviated months parse too, so a source switching to "Apr. 29" does not silently drop events. Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
87 lines
2.9 KiB
TypeScript
87 lines
2.9 KiB
TypeScript
import { describe, expect, test } from "bun:test";
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import {
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parseMonthDayRange,
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parseMonthDayYear,
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parseSlashDateTimeRange,
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} from "../src/ingest/dates.ts";
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describe("parseMonthDayYear", () => {
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test("parses a full date at day precision", () => {
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expect(parseMonthDayYear("August 12, 2026")).toEqual({
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iso: "2026-08-12T00:00:00.000Z",
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precision: "day",
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});
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});
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test("accepts abbreviated months with and without a period", () => {
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expect(parseMonthDayYear("Apr. 29, 2026")?.iso).toBe(
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"2026-04-29T00:00:00.000Z",
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);
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expect(parseMonthDayYear("Sept 3, 2026")?.iso).toBe(
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"2026-09-03T00:00:00.000Z",
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);
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});
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test("returns null rather than guessing a missing year", () => {
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expect(parseMonthDayYear("August 12")).toBeNull();
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});
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test("rejects impossible calendar dates", () => {
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expect(parseMonthDayYear("February 30, 2026")).toBeNull();
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});
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test("rejects an unknown month name", () => {
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expect(parseMonthDayYear("Smarch 3, 2026")).toBeNull();
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});
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});
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describe("parseMonthDayRange", () => {
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test("applies the stated year to both ends", () => {
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expect(parseMonthDayRange("August 12 - September 21, 2026")).toEqual({
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start: { iso: "2026-08-12T00:00:00.000Z", precision: "day" },
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end: { iso: "2026-09-21T00:00:00.000Z", precision: "day" },
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});
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});
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test("rolls the start back a year when the range crosses New Year", () => {
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// "December 28 - January 4, 2027" — the stated year belongs to the end.
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const r = parseMonthDayRange("December 28 - January 4, 2027");
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expect(r?.start.iso).toBe("2026-12-28T00:00:00.000Z");
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expect(r?.end.iso).toBe("2027-01-04T00:00:00.000Z");
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});
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test("handles en dash and abbreviated months", () => {
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const r = parseMonthDayRange("Apr. 29 – May 13, 2026");
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expect(r?.start.iso).toBe("2026-04-29T00:00:00.000Z");
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expect(r?.end.iso).toBe("2026-05-13T00:00:00.000Z");
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});
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test("returns null for a year-less range", () => {
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// Game8 summary tables render "08/12 - 08/24". Guessing the year here is
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// exactly the failure the product exists to prevent.
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expect(parseMonthDayRange("08/12 - 08/24")).toBeNull();
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});
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});
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describe("parseSlashDateTimeRange", () => {
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test("parses a timed range at exact precision", () => {
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expect(
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parseSlashDateTimeRange("2021/01/16 04:00 - 2021/01/31 03:59"),
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).toEqual({
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start: { iso: "2021-01-16T04:00:00.000Z", precision: "exact" },
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end: { iso: "2021-01-31T03:59:00.000Z", precision: "exact" },
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});
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});
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test("ignores trailing prose after the range", () => {
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const r = parseSlashDateTimeRange(
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"2021/01/16 04:00 - 2021/01/31 03:59 Currently Unavailable",
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);
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expect(r?.end.iso).toBe("2021-01-31T03:59:00.000Z");
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});
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test("returns null for non-date prose", () => {
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expect(parseSlashDateTimeRange("Permanently Available")).toBeNull();
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});
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});
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