I'm trying to mock an editor as part of writing feature tests for a CLI that I'm working on. I need to mock an editor which is opened and quit directly without saving, as well as an editor which modifies content in some way, then saves and exits.

For the first test, I'm doing this:

export EDITOR='vi -c :q!' 

which seems to work.

But I'm having a hard time writing the second test. I've tried something along these lines:

export EDITOR='vi -c ":Loremipsum" -c ":wq"' 

(I have the Loremipsum plugin installed, but any other command which appended text would be equally fine).

The file that's opened in this way doesn't actually get modified, so I can tell I'm doing something wrong. I'm not wrapping my head around the documentation for the -c flag, and I can't find any clear examples of its syntax. What am I doing wrong?