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docs+test: add audio format docs and shared-storage utils tests

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- Document all supported audio formats in mukke CLAUDE.md with browser
  compatibility matrix and notes on formats needing transcoding
- Add utils.test.ts for shared-storage: MIME type mappings, audio
  extension validation, and AUDIO_EXTENSIONS completeness checks (19 tests)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Till JS 2026-03-21 11:12:58 +01:00
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packages/shared-storage/src/utils.test.ts Normal file
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import { describe, it, expect } from 'vitest';
import { getContentType, validateFileExtension, AUDIO_EXTENSIONS } from './utils';
describe('getContentType', () => {
describe('audio formats', () => {
const audioMappings: [string, string][] = [
['.mp3', 'audio/mpeg'],
['.wav', 'audio/wav'],
['.ogg', 'audio/ogg'],
['.m4a', 'audio/mp4'],
['.aac', 'audio/aac'],
['.flac', 'audio/flac'],
['.aiff', 'audio/aiff'],
['.aif', 'audio/aiff'],
['.opus', 'audio/opus'],
['.wma', 'audio/x-ms-wma'],
['.alac', 'audio/mp4'],
['.ape', 'audio/x-ape'],
['.wv', 'audio/x-wavpack'],
['.dsf', 'audio/dsf'],
['.dff', 'audio/dff'],
];
it.each(audioMappings)('%s → %s', (ext, expected) => {
expect(getContentType(`song${ext}`)).toBe(expected);
});
it('handles uppercase extensions', () => {
expect(getContentType('song.FLAC')).toBe('audio/flac');
expect(getContentType('song.M4A')).toBe('audio/mp4');
});
it('returns application/octet-stream for unknown extensions', () => {
expect(getContentType('song.xyz')).toBe('application/octet-stream');
});
});
});
describe('AUDIO_EXTENSIONS', () => {
it('contains all common audio formats', () => {
const expected = [
'.mp3',
'.wav',
'.ogg',
'.m4a',
'.aac',
'.flac',
'.aiff',
'.aif',
'.opus',
'.wma',
'.webm',
'.alac',
'.ape',
'.wv',
'.dsf',
'.dff',
];
for (const ext of expected) {
expect(AUDIO_EXTENSIONS).toContain(ext);
}
});
});
describe('validateFileExtension', () => {
it('validates audio files against AUDIO_EXTENSIONS', () => {
expect(validateFileExtension('song.flac', AUDIO_EXTENSIONS)).toBe(true);
expect(validateFileExtension('song.mp3', AUDIO_EXTENSIONS)).toBe(true);
expect(validateFileExtension('song.opus', AUDIO_EXTENSIONS)).toBe(true);
expect(validateFileExtension('song.exe', AUDIO_EXTENSIONS)).toBe(false);
expect(validateFileExtension('song.pdf', AUDIO_EXTENSIONS)).toBe(false);
});
});