88 lines
3.7 KiB
TypeScript
88 lines
3.7 KiB
TypeScript
import { describe, expect, it } from "vitest";
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import {
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canonicalRepair,
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findConflicts,
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localTimeCandidates,
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mergeCalendars,
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parseCalendar,
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previewOccurrences,
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timezoneDiagnostics,
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} from "../../src/calendar/model";
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const recurring = `BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//test//EN\r\nBEGIN:VEVENT\r\nUID:a\r\nDTSTAMP:20260101T000000Z\r\nDTSTART:20260901T100000Z\r\nDTEND:20260901T110000Z\r\nRRULE:FREQ=DAILY;COUNT=3\r\nSUMMARY:A\r\nEND:VEVENT\r\nBEGIN:VEVENT\r\nUID:b\r\nDTSTART:20260901T103000Z\r\nDTEND:20260901T120000Z\r\nSUMMARY:B\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n`;
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describe("calendar model", () => {
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it("parses and expands recurrence under a bound", () => {
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const document = parseCalendar(recurring);
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expect(document.events).toHaveLength(2);
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const preview = previewOccurrences(document, 10, 30);
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expect(preview.occurrences.filter((item) => item.uid === "a")).toHaveLength(
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3,
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);
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expect(findConflicts(preview.occurrences)).toEqual(
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expect.arrayContaining([expect.objectContaining({ kind: "overlap" })]),
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);
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});
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it("canonicalizes line endings and supplies required metadata", () => {
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const input = `BEGIN:VCALENDAR\nBEGIN:VEVENT\nUID:x\nDTSTART:20260901T100000Z\nDTEND:20260901T110000Z\nEND:VEVENT\nEND:VCALENDAR\n`;
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const repaired = canonicalRepair(input);
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expect(repaired.source).toContain("VERSION:2.0\r\n");
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expect(repaired.source).toContain("PRODID:");
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expect(repaired.source).not.toMatch(/(?<!\r)\n/u);
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});
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it("merges event identity using sequence then stamp", () => {
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const newer = recurring.replace(
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"SUMMARY:A",
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"SEQUENCE:2\r\nSUMMARY:Updated A",
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);
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const merged = mergeCalendars([
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parseCalendar(recurring),
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parseCalendar(newer),
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]);
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expect(merged.deduplicated).toBe(2);
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expect(merged.source).toContain("SUMMARY:Updated A");
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expect(parseCalendar(merged.source).events).toHaveLength(2);
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});
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it("never deduplicates separate UID-less events", () => {
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const uidless = `BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//test//EN\r\nBEGIN:VEVENT\r\nDTSTART:20260901T100000Z\r\nDTEND:20260901T110000Z\r\nSUMMARY:No identity\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n`;
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const merged = mergeCalendars([
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parseCalendar(uidless),
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parseCalendar(uidless),
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]);
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expect(merged.deduplicated).toBe(0);
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expect(parseCalendar(merged.source).events).toHaveLength(2);
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expect(merged.diagnostics.map((item) => item.message).join(" ")).toMatch(
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/UID-less/u,
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);
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});
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it("uses embedded VTIMEZONE observances for custom TZIDs", () => {
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const custom = `BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//test//EN\r\nBEGIN:VTIMEZONE\r\nTZID:Custom/Test\r\nBEGIN:STANDARD\r\nDTSTART:19700101T000000\r\nTZOFFSETFROM:+0230\r\nTZOFFSETTO:+0230\r\nTZNAME:CST\r\nEND:STANDARD\r\nEND:VTIMEZONE\r\nBEGIN:VEVENT\r\nUID:custom\r\nDTSTART;TZID=Custom/Test:20260901T100000\r\nDTEND;TZID=Custom/Test:20260901T110000\r\nSUMMARY:Custom zone\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n`;
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const document = parseCalendar(custom);
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expect(document.timezones[0]?.tzid).toBe("Custom/Test");
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expect(document.events[0]?.startMs).toBe(
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Date.parse("2026-09-01T07:30:00.000Z"),
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);
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});
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it("classifies DST overlaps and reports yearly transitions", () => {
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const candidates = localTimeCandidates("2026-10-25T02:30", "Europe/Berlin");
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expect(candidates).toHaveLength(2);
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expect(timezoneDiagnostics("Europe/Berlin", 2026).transitions).toHaveLength(
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2,
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);
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});
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it("rejects unbounded and malformed inputs", () => {
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expect(() => previewOccurrences(parseCalendar(recurring), 501, 30)).toThrow(
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/1–500/u,
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);
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expect(() => parseCalendar("not a calendar")).toThrow(
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/parse failed|root component/u,
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);
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});
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});
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