import { describe, it, expect } from 'vitest'
import { humanFileSize } from '../../src/lib/utilities/string-utilities'

describe('humanFileSize', () => {
    it('returns "0B" for 0 bytes', () => {
        expect(humanFileSize(0)).toBe('0B')
    })

    it('returns the size in bytes correctly', () => {
        expect(humanFileSize(500)).toBe('500B')
    })

    it('returns the size in kB correctly', () => {
        expect(humanFileSize(1024)).toBe('1kB')
    })

    it('returns the size in MB correctly', () => {
        expect(humanFileSize(1048576)).toBe('1MB') // 1024 * 1024
    })

    it('returns the size in GB correctly', () => {
        expect(humanFileSize(1073741824)).toBe('1GB') // 1024 * 1024 * 1024
    })

    it('rounds to 2 decimal places correctly', () => {
        expect(humanFileSize(1536)).toBe('1.5kB') // 1024 + 512
    })
})