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import {downloadAndResize, DownloadAndResizeOpts} from '../../src/lib/images'
import ImageResizer from '@bam.tech/react-native-image-resizer'
import RNFetchBlob from 'rn-fetch-blob'
jest.mock('rn-fetch-blob', () => ({
config: jest.fn().mockReturnThis(),
cancel: jest.fn(),
fetch: jest.fn(),
}))
jest.mock('@bam.tech/react-native-image-resizer', () => ({
createResizedImage: jest.fn(),
}))
describe('downloadAndResize', () => {
const errorSpy = jest.spyOn(global.console, 'error')
const mockResizedImage = {
path: jest.fn().mockReturnValue('file://resized-image.jpg'),
size: 100,
}
beforeEach(() => {
jest.clearAllMocks()
const mockedCreateResizedImage =
ImageResizer.createResizedImage as jest.Mock
mockedCreateResizedImage.mockResolvedValue(mockResizedImage)
})
it('should return resized image for valid URI and options', async () => {
const mockedFetch = RNFetchBlob.fetch as jest.Mock
mockedFetch.mockResolvedValueOnce({
path: jest.fn().mockReturnValue('file://downloaded-image.jpg'),
flush: jest.fn(),
})
const opts: DownloadAndResizeOpts = {
uri: 'https://example.com/image.jpg',
width: 100,
height: 100,
maxSize: 500000,
mode: 'cover',
timeout: 10000,
}
const result = await downloadAndResize(opts)
expect(result).toEqual(mockResizedImage)
expect(RNFetchBlob.config).toHaveBeenCalledWith({
fileCache: true,
appendExt: 'jpeg',
})
expect(RNFetchBlob.fetch).toHaveBeenCalledWith(
'GET',
'https://example.com/image.jpg',
)
expect(ImageResizer.createResizedImage).toHaveBeenCalledWith(
'file://downloaded-image.jpg',
100,
100,
'JPEG',
1,
undefined,
undefined,
undefined,
{mode: 'cover'},
)
})
it('should return undefined for invalid URI', async () => {
const opts: DownloadAndResizeOpts = {
uri: 'invalid-uri',
width: 100,
height: 100,
maxSize: 500000,
mode: 'cover',
timeout: 10000,
}
const result = await downloadAndResize(opts)
expect(errorSpy).toHaveBeenCalled()
expect(result).toBeUndefined()
})
it('should return undefined for unsupported file type', async () => {
const opts: DownloadAndResizeOpts = {
uri: 'https://example.com/image.bmp',
width: 100,
height: 100,
maxSize: 500000,
mode: 'cover',
timeout: 10000,
}
const result = await downloadAndResize(opts)
expect(result).toBeUndefined()
})
})
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