emdash-cms--emdash/packages/plugin-cli/tests/multihash.test.ts

import { describe, expect, it } from "vitest";

import { sha256Multihash } from "../src/multihash.js";

describe("sha256Multihash", () => {
	it("matches an independently-verified vector for sha2-256('hello world')", () => {
		// Cross-checked against the multiformats reference encoding:
		//   sha256("hello world")     = b94d27b9...e2efcde9
		//   multihash bytes           = 0x12 0x20 || digest
		//   multibase('b' = base32)   = bciqlstjhxgju2pqiuuxffv62pwv7vree57rxuu4a52iir55m4lx432i
		// If this drifts, the multibase prefix or the base32 alphabet changed.
		const out = sha256Multihash(new TextEncoder().encode("hello world"));
		expect(out).toBe("bciqlstjhxgju2pqiuuxffv62pwv7vree57rxuu4a52iir55m4lx432i");
	});
});