# Feeding a macro with the expansion of an other defined “by” \csname

I have a macro \mymacro@i that I want to "feed" with the expansion of another \test. With \expandafter\mymacro@i\test, it works.

Now, the \test macro can be defined by using \csname, say a /test macro. I can't find the combination of \expandafter to make it work the same way as with \test. How can I do?

\documentclass{standalone}
\makeatletter
\expandafter\def\csname /test\endcsname{%
\foo{bar}}
\def\mymacro#1{%
\expandafter\mymacro@i\csname/#1\endcsname}
\def\mymacro@i\foo#1{%
\def\temp{#1}%
\show\temp}
\mymacro{test}
% Error: Use of \mymacro@i doesn't match its definition.
%
\def\test{\foo{bar}}
\def\mymacro#1{%
\expandafter\mymacro@i\test}
\def\mymacro@i\foo#1{%
\def\temp{#1}%
\show\temp}
\mymacro{test}
\begin{document}
\end{document}
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