dates.test.mjs

mcp-server/test/dates.test.mjs

1. // Unit tests for lib/dates.ts. Run after `npm run build` (npm test does both).
2. import { test } from "node:test";
3. import assert from "node:assert/strict";
4. import { toRequestDate } from "../dist/lib/dates.js";
6. test("an ISO date becomes yyyymmdd with no separators", () => {
7. assert.equal(toRequestDate("2026-03-07"), "20260307");
8. assert.equal(toRequestDate("2026-12-31"), "20261231");
9. });
11. test("a Date is formatted from its UTC fields", () => {
12. assert.equal(toRequestDate(new Date(Date.UTC(2026, 0, 5))), "20260105");
13. // 23:30 in UTC-5 on 5 January is already 6 January in UTC.
14. assert.equal(toRequestDate(new Date("2026-01-05T23:30:00-05:00")), "20260106");
15. });
17. test("input already in the request format is rejected, not passed through", () => {
18. assert.throws(() => toRequestDate("20260307"), RangeError);
19. });
21. test("malformed strings throw a RangeError naming the expected format", () => {
22. for (const input of ["", "07/03/2026", "2026-13-01", "yesterday"]) {
23. assert.throws(
24. () => toRequestDate(input),
25. (err) => err instanceof RangeError && err.message === `Invalid date: ${input} (expected YYYY-MM-DD)`,
26. `input ${JSON.stringify(input)}`,
27. );
28. }
29. });
31. test("an invalid Date throws a RangeError", () => {
32. assert.throws(() => toRequestDate(new Date(Number.NaN)), RangeError);
33. });