51 lines
1.6 KiB
TypeScript
51 lines
1.6 KiB
TypeScript
import { afterEach, describe, expect, it, vi } from "vitest";
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import { uuidv7 } from "../../src/harness/session/uuid.ts";
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const UUID_V7_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-7[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/;
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const TIMESTAMP = 0x0123456789ab;
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function parseTimestamp(uuid: string): number {
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return Number.parseInt(uuid.replaceAll("-", "").slice(0, 12), 16);
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}
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afterEach(() => {
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vi.unstubAllGlobals();
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});
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describe("uuidv7", () => {
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it("uses the RFC 9562 layout and preserves monotonic order", () => {
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const randomValues = [
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new Uint8Array([0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xfe, 0x01, 0x11, 0x22, 0x33, 0x44, 0x55]),
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new Uint8Array(16),
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new Uint8Array(16),
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];
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const getRandomValues = vi.fn((bytes: Uint8Array) => {
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bytes.set(randomValues.shift() ?? new Uint8Array(bytes.length));
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return bytes;
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});
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vi.stubGlobal("crypto", { getRandomValues });
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const dateNow = vi.spyOn(Date, "now").mockReturnValue(TIMESTAMP);
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try {
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const first = uuidv7();
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const second = uuidv7();
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const third = uuidv7();
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expect(first).toBe("01234567-89ab-7fff-bfff-f91122334455");
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expect(second).toBe("01234567-89ab-7fff-bfff-fc0000000000");
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expect(third).toBe("01234567-89ac-7000-8000-000000000000");
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expect(first).toMatch(UUID_V7_RE);
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expect(second).toMatch(UUID_V7_RE);
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expect(third).toMatch(UUID_V7_RE);
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expect(parseTimestamp(first)).toBe(TIMESTAMP);
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expect(parseTimestamp(second)).toBe(TIMESTAMP);
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expect(parseTimestamp(third)).toBe(TIMESTAMP + 1);
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expect(first < second).toBe(true);
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expect(second < third).toBe(true);
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expect(getRandomValues).toHaveBeenCalledTimes(3);
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} finally {
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dateNow.mockRestore();
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}
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});
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});
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