audio/x-pn-realaudio           ra ram rm rpm    # REALAUDIO Sound File
audio/x-wav                    wav              # WAV Sound File
audio/x-mpegurl                mp3              # MP3 Sound File
audio/mpeg3                    mp3              # MP3 Sound File
audio/x-mpeg-3                 mp3              # MP3 Sound File
audio/mpeg                     mp2 mpa mpg mpga # MP2 Sound File
audio/x-mpeg                   mp2              # MP2 Sound File

            // Common audio formats
            assertEquals("audio/x-wav", mimeMap.getMimeType("wav"));
            // mp3 has multiple mappings, first one wins
            assertEquals("audio/x-mpegurl", mimeMap.getMimeType("mp3"));

            // Common video formats
            assertEquals("video/x-msvideo", mimeMap.getMimeType("avi"));

        // Test with various MIME types
        String[] supportedTypes = { "application/pdf", "image/jpeg", "image/png" };
        String[] unsupportedTypes = { "text/plain", "application/xml", "audio/mp3" };

        for (String mimeType : supportedTypes) {
            Map<String, Object> docMap = new HashMap<>();
            docMap.put("mimetype", mimeType);