// Copyright (C) 2016 Dmitry Chestnykh
// MIT License. See LICENSE file for details.

import { describe, expect, it } from 'vitest';
import { stream, hsalsa } from "./xsalsa20.js";
import { encode, decode } from "@stablelib/hex";

describe("xsalsa20.hsalsa", () => {
    it("should produce correct value", () => {
        const key = decode("000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F");
        const src = decode("FFFEFDFCFBFAF9F8F7F6F5F4F3F2F1F0");
        const good = "C6CB53882782B5B86DF1AB2ED9B810EC8A88C0A7F29211E693F0019FE0728858";
        const dst = new Uint8Array(32);
        expect(encode(hsalsa(key, src, dst))).toBe(good);
    });
});

describe("xsalsa20.stream", () => {
    it("should produce correct result", () => {
        const key = decode("000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F");
        const nonce = decode("FFFEFDFCFBFAF9F8F7F6F5F4F3F2F1F0EFEEEDECEBEAE9E8");
        const good = "300885CCE813D8CDBE05F89706F9D5557041E4FADC3EBC5DB89C6CA60F7" +
            "3EDE4F91FF1F9521D3E9AF058E037E7FD0601DB9CCBD7A9F5CED151426F" +
            "DE32FC544F4F95576E2614377049C258664845A93D5FF5DD479CFEB55C7" +
            "579B60D419B8A8C03DA3494993577B4597DCB658BE52AB7";
        const dst = new Uint8Array(good.length / 2);
        expect(encode(stream(key, nonce, dst))).toBe(good);
    });
});

// TODO(dchest): test nonceInplaceCounterLength