import { describe, expect, it } from "vitest";
import { createCorrelationId } from "./correlation";

describe("createCorrelationId", () => {
	it("creates UUID-backed identifiers within the audit storage limit", () => {
		const correlationId = createCorrelationId();

		expect(correlationId).toMatch(
			/^[0-9a-f]{8}-[0-9a-f]{4}-[1-8][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i,
		);
		expect(correlationId.length).toBeLessThanOrEqual(64);
	});

	it("does not reuse an identifier for separate operations", () => {
		expect(createCorrelationId()).not.toBe(createCorrelationId());
	});
});