import { downloadFile, formatFileSize, formatNumber, formatTime } from './format'
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describe('formatNumber', () => {
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test('should correctly format integers', () => {
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expect(formatNumber(1234567)).toBe('1,234,567')
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})
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test('should correctly format decimals', () => {
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expect(formatNumber(1234567.89)).toBe('1,234,567.89')
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})
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test('should correctly handle string input', () => {
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expect(formatNumber('1234567')).toBe('1,234,567')
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})
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test('should correctly handle zero', () => {
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expect(formatNumber(0)).toBe(0)
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})
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test('should correctly handle negative numbers', () => {
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expect(formatNumber(-1234567)).toBe('-1,234,567')
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})
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test('should correctly handle empty input', () => {
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expect(formatNumber('')).toBe('')
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})
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})
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describe('formatFileSize', () => {
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test('should return the input if it is falsy', () => {
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expect(formatFileSize(0)).toBe(0)
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})
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test('should format bytes correctly', () => {
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expect(formatFileSize(500)).toBe('500.00B')
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})
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test('should format kilobytes correctly', () => {
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expect(formatFileSize(1500)).toBe('1.46KB')
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})
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test('should format megabytes correctly', () => {
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expect(formatFileSize(1500000)).toBe('1.43MB')
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})
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test('should format gigabytes correctly', () => {
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expect(formatFileSize(1500000000)).toBe('1.40GB')
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})
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test('should format terabytes correctly', () => {
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expect(formatFileSize(1500000000000)).toBe('1.36TB')
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})
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test('should format petabytes correctly', () => {
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expect(formatFileSize(1500000000000000)).toBe('1.33PB')
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})
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})
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describe('formatTime', () => {
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test('should return the input if it is falsy', () => {
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expect(formatTime(0)).toBe(0)
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})
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test('should format seconds correctly', () => {
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expect(formatTime(30)).toBe('30.00 sec')
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})
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test('should format minutes correctly', () => {
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expect(formatTime(90)).toBe('1.50 min')
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})
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test('should format hours correctly', () => {
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expect(formatTime(3600)).toBe('1.00 h')
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})
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test('should handle large numbers', () => {
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expect(formatTime(7200)).toBe('2.00 h')
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})
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})
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describe('downloadFile', () => {
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test('should create a link and trigger a download correctly', () => {
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// Mock data
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const blob = new Blob(['test content'], { type: 'text/plain' })
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const fileName = 'test-file.txt'
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const mockUrl = 'blob:mockUrl'
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// Mock URL.createObjectURL
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const createObjectURLMock = jest.fn().mockReturnValue(mockUrl)
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const revokeObjectURLMock = jest.fn()
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Object.defineProperty(window.URL, 'createObjectURL', { value: createObjectURLMock })
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Object.defineProperty(window.URL, 'revokeObjectURL', { value: revokeObjectURLMock })
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// Mock createElement and appendChild
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const mockLink = {
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href: '',
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download: '',
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click: jest.fn(),
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remove: jest.fn(),
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}
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const createElementMock = jest.spyOn(document, 'createElement').mockReturnValue(mockLink as any)
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const appendChildMock = jest.spyOn(document.body, 'appendChild').mockImplementation((node: Node) => {
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return node
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})
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// Call the function
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downloadFile({ data: blob, fileName })
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// Assertions
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expect(createObjectURLMock).toHaveBeenCalledWith(blob)
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expect(createElementMock).toHaveBeenCalledWith('a')
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expect(mockLink.href).toBe(mockUrl)
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expect(mockLink.download).toBe(fileName)
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expect(appendChildMock).toHaveBeenCalledWith(mockLink)
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expect(mockLink.click).toHaveBeenCalled()
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expect(mockLink.remove).toHaveBeenCalled()
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expect(revokeObjectURLMock).toHaveBeenCalledWith(mockUrl)
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// Clean up mocks
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jest.restoreAllMocks()
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})
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})
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