/**
 * Tests for the CRC32 checksum module.
 *
 * CRC32 is used to verify data integrity in the BySquare format.
 * Tests verify correct checksum calculation for various inputs.
 */

import {
	describe,
	expect,
	test,
} from "bun:test";

import { crc32 } from "./crc32.js";

/**
 * Test cases with known CRC32 values.
 * Values verified against standard CRC32 implementations.
 */
const crc32TestCases = [
	{ name: "empty string", input: "", expected: 0 },
	{ name: "single character", input: "a", expected: 3904355907 },
	{ name: "hello world", input: "hello world", expected: 222957957 },
	{ name: "123456789", input: "123456789", expected: 3421780262 },
];

describe("crc32", () => {
	test.each(crc32TestCases)("$name", ({ input, expected }) => {
		const result = crc32(input);
		expect(result).toBe(expected);
	});
});