import assert from "node:assert/strict";
import fs     from "node:fs";

import * as runner from "../runner.mjs";
import {
	makeRandom,
} from "../rand.mjs";


const test_makeRandom = async t => {
	t.start("makeRandom()");

	await t.test("known expected values", () => {
		const expected1 = [
			545331265,  2211535594, 4152021490, 3857419313,
			1118735928, 3031474347, 3853601519, 3345048107,
			1618127707, 4001288224, 1444061399, 2700534436,
			1938647176, 1459718602, 3608868106, 926825740,
			528719691,  508226068,  2332279787, 357437743,
			1602075314, 1655472598, 1924131686, 4125580919,
			555943458,  4047836046, 3693150918, 1515015978,
			3523541186, 753964207,  1512058436, 682070622,
			983063469,  4097791860, 3336260823, 603291380,
			2554576084, 139062484,  590788013,  3608810491,
			3663176645, 3481732081, 1011496919, 2935401636,
			628041163,  3997974947, 2533467101, 2287863463,
			2465361808, 1196937660, 263152482,  618228754,
			2535860367, 3089904367, 1053769440, 1270818139,
			1462199892, 49766906,   4229377745, 445624458,
			3949395950, 4102223196, 162228180,  352248782,
			3700326028, 965464548,  3236553557, 1342363444,
			1740229486, 4006226087, 1475432391, 2100043423,
			734083679,  2197742340, 1695047538, 2684537025,
			2755935210, 2185177924, 1179365521, 682202996,
			1985796754, 1203188028, 3742512741, 2573038834,
			1722845493, 971634808,  2622456659, 1542773708,
			506664990,  516191900,  3015858858, 2439287065,
			1778261054, 3352336947, 1470361474, 2832338531,
			2559479753, 2841821596, 858410480,  1311022275,
		];

		const expected2 = [
			1867215825, 1512725508, 59490082,   898255083,
			2128587452, 3375572255, 3011978101, 664390052,
			712189293,  1309145867, 1574443536, 3005563625,
			1937221174, 2592810353, 1221596501, 3864084723,
			2447880554, 1373397507, 4101388729, 1434258649,
			2876658371, 694177935,  1850641240, 2934786942,
			3613830458, 3660625740, 1450431957, 978896710,
			108365537,  1669305275, 1505684879, 1989942961,
			4089952722, 2832268551, 27863256,   3866494241,
			3916427650, 3309597508, 24597008,   3442418170,
			1617059167, 175885832,  854293503,  3965431971,
			3276364445, 4079612430, 1622146979, 1665096344,
			2283667308, 2042586700, 2997013224, 1214521941,
			860865914,  3204144669, 3352312876, 407025370,
			1854088521, 1518454983, 2467488963, 3014922727,
			667505194,  1382726996, 3519130642, 3473985175,
			387425140,  826920070,  3222196824, 3272392876,
			2814202151, 1958017767, 2343175108, 513394477,
			983853656,  3389045986, 177790781,  1853562919,
			1417029053, 115479138,  3505632337, 339954849,
			2552460743, 1260703764, 1719642924, 3129628830,
			1828716278, 3537151540, 4169628597, 444526909,
			4191927207, 3891278677, 1954375449, 3973495864,
			2231816005, 4062939046, 2084239497, 3470238230,
			1145760705, 2114090486, 4245867725, 1687967890,
		];

		const expected3 = JSON.parse(
			fs.readFileSync("tests/bigger-rand-output.txt"),
		);

		const given1 = Array.from(
			new Array(expected1.length),
			makeRandom(123456),
		);
		const given2 = Array.from(
			new Array(expected2.length),
			makeRandom(123457),
		);
		const given3 = Array.from(
			new Array(expected3.length),
			makeRandom(2222),
		);

		assert.deepEqual(given1, expected1);
		assert.deepEqual(given2, expected2);
		assert.deepEqual(given3, expected3);
	});
};


await runner.runTests([
	test_makeRandom,
]);