Who am I ?

I write code , but am not a coder
I test software , but am not a tester

I write poems , but am not a poet
I write stories , but am not an author

I sing a song , but am not a singer
I play the guitar , but am not an artist
I do what You tell me to
If You dont tell me , what can I do

Now, come on , I dont even do what I say I do
Its You who do what You need to do.