[Tex/LaTex] Beamer enumeration, continue counting but keep item at fixed position

Question

I want an enumeration list. The list should however be fixed at its position. Furthermore at all time only 1 item should shown. So what I want is sort of this

\documentclass{beamer}
\begin{document}
\begin{frame}{Test}
\only<1>{%
  \begin{enumerate}
    \item[1.]<1> Item 1
   \end{enumerate}
}
\only<2>{%
  \begin{enumerate}
    \item[2.]<2> Item 2
  \end{enumerate}
}
\only<3>{%
  \begin{enumerate}
    \item[3.]<3> Item 3
  \end{enumerate}
}
\end{frame}
\end{document}

Can this be achieved in an easy manner? For example, is there an option? Such that you could just use

\documentclass{beamer}
\begin{document}
\begin{frame}{Test}
\begin{enumerate}
\item<1> Item 1
\item<2> Item 2
\item<3> Item 3
\end{frame}
\end{document}

Answer 1

An easier way would be to use

\documentclass{beamer}
\usepackage{lmodern}% http://tex.stackexchange.com/q/58087/5764
\begin{document}
\begin{frame}{Test}
  \begin{enumerate}
    \only<1>{\item[1.] Item 1}
    \only<2>{\item[2.] Item 2}
    \only<3>{\item[3.] Item 3}
  \end{enumerate}
\end{frame}
\end{document}