hepiano;charset= waddup",
        "text/x-thepiano;charset=UTF-8",
        "charset given but wrong, fix it (unknown MIME, bogus charset)"
      )
      request(
        "text/plain;charset=utf-8;charset=waddup",
        "text/plain;charset=utf-8;charset=waddup",
        "If charset= param is UTF-8 (case-insensitive), it should not be changed (bogus charset)"
      )
      request(
        "text/plain;charset=shift-jis",
        "text/plain;charset=UTF-8",
        "charset given but wrong, fix it (known MIM