immich/web/src/lib/utils/asset-utils.spec.ts

import type { AssetResponseDto } from '@api';
import { describe, expect, it } from '@jest/globals';
import { getAssetFilename, getFilenameExtension, getFileMimeType } from './asset-utils';

describe('get file extension from filename', () => {
	it('returns the extension without including the dot', () => {
		expect(getFilenameExtension('filename.txt')).toEqual('txt');
	});

	it('takes the last file extension and ignores the rest', () => {
		expect(getFilenameExtension('filename.txt.pdf')).toEqual('pdf');
		expect(getFilenameExtension('filename.txt.pdf.jpg')).toEqual('jpg');
	});

	it('returns an empty string when no file extension is found', () => {
		expect(getFilenameExtension('filename')).toEqual('');
		expect(getFilenameExtension('filename.')).toEqual('');
		expect(getFilenameExtension('filename..')).toEqual('');
		expect(getFilenameExtension('.filename')).toEqual('');
	});

	it('returns the extension from a filepath', () => {
		expect(getFilenameExtension('/folder/file.txt')).toEqual('txt');
		expect(getFilenameExtension('./folder/file.txt')).toEqual('txt');
		expect(getFilenameExtension('~/folder/file.txt')).toEqual('txt');
		expect(getFilenameExtension('./folder/.file.txt')).toEqual('txt');
		expect(getFilenameExtension('/folder.with.dots/file.txt')).toEqual('txt');
	});
});

describe('get asset filename', () => {
	it('returns the filename including file extension', () => {
		[
			{
				asset: {
					originalFileName: 'filename',
					originalPath: 'upload/library/test/2016/2016-08-30/filename.jpg'
				},
				result: 'filename.jpg'
			},
			{
				asset: {
					originalFileName: 'new-filename',
					originalPath:
						'upload/library/89d14e47-a40d-4cae-a347-a914cdef1f22/2016/2016-08-30/filename.jpg'
				},
				result: 'new-filename.jpg'
			},
			{
				asset: {
					originalFileName: 'new-filename.txt',
					originalPath: 'upload/library/test/2016/2016-08-30/filename.txt.jpg'
				},
				result: 'new-filename.txt.jpg'
			}
		].forEach(({ asset, result }) => {
			expect(getAssetFilename(asset as AssetResponseDto)).toEqual(result);
		});
	});
});

describe('get file mime type', () => {
	for (const { extension, mimeType } of [
		{ extension: '3gp', mimeType: 'video/3gpp' },
		{ extension: 'arw', mimeType: 'image/x-sony-arw' },
		{ extension: 'dng', mimeType: 'image/dng' },
		{ extension: 'heic', mimeType: 'image/heic' },
		{ extension: 'heif', mimeType: 'image/heif' },
		{ extension: 'insp', mimeType: 'image/jpeg' },
		{ extension: 'insv', mimeType: 'video/mp4' },
		{ extension: 'nef', mimeType: 'image/x-nikon-nef' },
		{ extension: 'raf', mimeType: 'image/x-fuji-raf' },
		{ extension: 'srw', mimeType: 'image/x-samsung-srw' }
	]) {
		it(`returns the mime type for ${extension}`, () => {
			expect(getFileMimeType({ name: `filename.${extension}` } as File)).toEqual(mimeType);
		});
	}

	it('returns the mime type from the file', () => {
		[
			{
				file: {
					name: 'filename.jpg',
					type: 'image/jpeg'
				},
				result: 'image/jpeg'
			},
			{
				file: {
					name: 'filename.txt',
					type: 'text/plain'
				},
				result: 'text/plain'
			},
			{
				file: {
					name: 'filename.txt',
					type: ''
				},
				result: ''
			}
		].forEach(({ file, result }) => {
			expect(getFileMimeType(file as File)).toEqual(result);
		});
	});
});