| 1 | import assert from "node:assert/strict"; |
| 2 | import { test } from "node:test"; |
| 3 | |
| 4 | import { idFloor, newId } from "./ids.ts"; |
| 5 | |
| 6 | test("an id has its prefix and a 26-character suffix, and sorts by time", () => { |
| 7 | const earlier = newId("evt", 1_790_000_000_000); |
| 8 | const later = newId("evt", 1_790_000_000_001); |
| 9 | assert.match(earlier, /^evt_[0-9a-hjkmnp-tv-z]{26}$/); |
| 10 | assert.ok(earlier < later); |
| 11 | }); |
| 12 | |
| 13 | test("a floor bounds the ids of a span, as a range of any index that ends in the id", () => { |
| 14 | const from = 1_790_000_000_000; |
| 15 | const before = newId("msg", from - 1); |
| 16 | const at = newId("msg", from); |
| 17 | const later = newId("msg", from + 60_000); |
| 18 | const floor = idFloor("msg", from); |
| 19 | const ceiling = idFloor("msg", from + 60_000); |
| 20 | assert.equal(floor.length, at.length); |
| 21 | assert.ok(before < floor); |
| 22 | assert.ok(floor < at && at < ceiling); |
| 23 | // An id made at the very millisecond of the ceiling is past it. |
| 24 | assert.ok(later >= ceiling); |
| 25 | }); |