For whatever reason rspec-mode didn't work for me. I couldn't either get it to use current version of Ruby or it used to crap out on Bundler detection.
Annoyed, I decided to write a very simple rspec-mode that works almost always. More importantly
it runs rspec from root of current project directory using your current shell and hence you
don't need to configure RVM or rbenv from Emacs. Whatever version of Ruby your shell has
it will run using that. As a bonus it runs rspec in a comint buffer that means if you are using
pry or a debugger you can interact with it from Emacs itself.
(require 'compile)
;; Find root directory by searching for Gemfile
(defun* get-closest-gemfile-root (&optional (file "Gemfile"))
(let ((root (expand-file-name "/")))
(loop
for d = default-directory then (expand-file-name ".." d)
if (file-exists-p (expand-file-name file d))
return d
if (equal d root)
return nil)))
(defun rspec-compile-file ()
(interactive)
(compile (format "cd %s;bundle exec rspec %s"
(get-closest-gemfile-root)
(file-relative-name (buffer-file-name) (get-closest-gemfile-root))
) t))
(defun rspec-compile-on-line ()
(interactive)
(compile (format "cd %s;bundle exec rspec %s -l %s"
(get-closest-gemfile-root)
(file-relative-name (buffer-file-name) (get-closest-gemfile-root))
(line-number-at-pos)
) t))
(add-hook 'enh-ruby-mode-hook
(lambda ()
(local-set-key (kbd "C-c l") 'rspec-compile-on-line)
(local-set-key (kbd "C-c k") 'rspec-compile-file)
))
An astute reader will notice that I am not using default ruby-mode. You can change the
hook to ruby-mode-hook if you are using default ruby-mode. So last few lines will become:
(add-hook 'ruby-mode-hook
(lambda ()
(local-set-key (kbd "C-c l") 'rspec-compile-on-line)
(local-set-key (kbd "C-c k") 'rspec-compile-file)
))