package main import ( "fmt" "mime" ) func main() { fmt.Println("🔍 MIME Type Detection Test:") fmt.Println("JPG:", mime.TypeByExtension(".jpg")) fmt.Println("JPEG:", mime.TypeByExtension(".jpeg")) fmt.Println("PNG:", mime.TypeByExtension(".png")) fmt.Println("PDF:", mime.TypeByExtension(".pdf")) fmt.Println("TXT:", mime.TypeByExtension(".txt")) fmt.Println("ZIP:", mime.TypeByExtension(".zip")) fmt.Println("MP4:", mime.TypeByExtension(".mp4")) fmt.Println("HTML:", mime.TypeByExtension(".html")) fmt.Println("CSS:", mime.TypeByExtension(".css")) fmt.Println("JS:", mime.TypeByExtension(".js")) fmt.Println("Unknown:", mime.TypeByExtension(".xyz")) fmt.Println("Empty:", mime.TypeByExtension("")) }