JavaScript.utils/tests/FormatBytes.test.js

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

import {
	formatBytes,
	formatBytesLong,
	stringByteFormat
} from '../src/utils/FormatBytes.mjs';

let bytes_map = [
	{
		"in": "120MB",
		"out": "120MB",
		"out_l": "120MB",
	},
	{
		"in": -123123123,
		"out": "-120237.42kB",
		"out_l": "-117.42 MB",
	},
	{
		"in": 999999, // KB-1,
		"out": "0.95MB",
		"out_l": "976.56 KB",
	},
	{
		"in": 999999999, // MB-1
		"out": "0.93GB",
		"out_l": "953.67 MB",
	},
	{
		"in": 254779258, // MB-n
		"out": "0.24GB",
		"out_l": "242.98 MB",
	},
	{
		"in": 999999999999999, // TB-1
		"out": "0.89PB",
		"out_l": "909.49 TB",
	},
	{
		"in": 588795544887632, // TB-n
		"out": "0.52PB",
		"out_l": "535.51 TB",
	},
	{
		"in": 999999999999999999n, // PB-1
		"out": "0.87EB",
		"out_l": "888.18 PB",
	},
	{
		"in": 9223372036854775807n, // MAX INT
		"out": "8EB",
		"out_l": "8.00 EB",
	},
	// {
	// 	"in": 999999999999999999999n, // EB-1
	// 	"out": "",
	// }
];

describe("formatBytes", () => {
	it('convert bytes to human readable, round up to next set', () => {
		// expect(formatBytes(1021152)).toBe('0.97MB');
		for (const bytes of bytes_map) {
			// @ts-ignore
			expect(formatBytes(bytes.in)).toBe(bytes.out);
		}
	});
});

describe("formatBytesLong", () => {
	it('convert bytes to human readable, keep on current set', () => {
		expect(formatBytesLong(1021152)).toBe('997.22 KB');
		for (const bytes of bytes_map) {
			// @ts-ignore
			expect(formatBytesLong(bytes.in)).toBe(bytes.out_l);
		}
	});
});

describe("stringByteFormat", () => {
	it('convert a string with byte suffix to bytes', () => {
		expect(stringByteFormat('997.22 KB')).toBe(1021153);
		expect(stringByteFormat('997.22 KB', true)).toBe(1021153.28);
	});
});

// __END__