Cask and ert-runner support

[sviridov]

Same as #112 but without tests refactoring and with interactive run suuport

[sviridov]

@mattdeboard I will update CONTRIBUTING.md later

[mattdeboard]

Perfect. How did you sort out the when window-system bit?

[sviridov]

@mattdeboard Hm.. It looks like we have one bug here. When I run:

$ EMACS=`evm bin emacs-24.3-bin` cask exec ert-runner --win

It's actually running not under window-system but in terminal.

[mattdeboard]

I ran this command:

matt@matt-x230:/opt/emacs-elixir$ cask --debug exec ert-runner --win 
Debugger entered--Lisp error: (error "Option `--win` not available")
  signal(error ("Option `--win` not available"))
  error("Option `%s` not available" "--win")
#snip

This led me to look at commander, which only recently added support for the ignore parameter for the option function. So perhaps if it's falling back to 24.3 it doesn't have the right version of commander?

[mattdeboard]

This is assuming you're getting the same error I'm getting when I try to run --win under 24.3:

matt@matt-x230:/opt/emacs-elixir$ cask exec ert-runner --win
cask exec: error: [Errno 2] No such file or directory

[mattdeboard]

Right, so I did the following:

evm use emacs-24.3-bin
# Installs all the deps etc. for 24.3:
cask
# Runs ok:
cask exec ert-runner 
# Opens up the GUI but again closes it down immediately:
cask exec ert-runner --win

[sviridov]

Opens up the GUI but again closes it down immediately:

@mattdeboard See #114.

I run tests with:

$ EMACS=`evm bin emacs-24.3-bin` cask exec ert-runner --win