Enable to open rspec result from emacs

Author: uk-ar

README.md

@@ -91,6 +91,7 @@ failed_mode: :focus    # What to do with failed specs
 all_after_pass: true   # Run all specs after changed specs pass, default: false
 all_on_start: true     # Run all the specs at startup, default: false
 launchy: nil           # Pass a path to an rspec results file, e.g. ./tmp/spec_results.html
+emacs: nil             # Pass a path to an rspec results file, e.g. ./tmp/spec_results.txt
 notification: false    # Display notification after the specs are done running, default: true
 run_all: { cmd: 'custom rspec command', message: 'custom message' } # Custom options to use when running all specs
 title: 'My project'    # Display a custom title for the notification, default: 'RSpec results'
@@ -108,6 +109,17 @@ guard :rspec, cmd: 'rspec -f html -o ./tmp/spec_results.html', launchy: './tmp/s
 end
 ```
 
+### Using Emacs to view rspec results
+
+guard-rspec can be configured to launch a results file in lieu of outputing rspec results to the terminal.
+Configure your Guardfile with the emacs option:
+
+``` ruby
+guard :rspec, cmd: 'rspec -o ./spec_results.txt', emacs: './spec_results.txt' do
+  # ...
+end
+```
+
 ## Development
 
 * Documentation hosted at [RubyDoc](http://rubydoc.info/github/guard/guard-rspec/master/frames).

lib/guard/rspec/options.rb

@@ -10,6 +10,7 @@ module Options
         cmd:             nil,
         cmd_additional_args: nil,
         launchy:         nil,
+        emacs:           nil,
         notification:    true,
         title:           "RSpec results"
       }

lib/guard/rspec/runner.rb

@@ -86,6 +86,25 @@ def _open_launchy
         ::Launchy.open(options[:launchy]) if pn.exist?
       end
 
+      def _open_emacs(failed_paths)
+        return unless options[:emacs]
+        pn = Pathname.new(options[:emacs])
+        elisp = <<-"EOS".gsub(/\s+/, " ").strip
+        (display-buffer
+         (save-excursion
+          (with-current-buffer (find-file-noselect \"#{pn}\" t)
+           (revert-buffer t t)
+           (ansi-color-apply-on-region (point-min)(point-max))
+           (set-buffer-modified-p nil)
+           (compilation-mode t)
+           (current-buffer))))
+        EOS
+        IO.popen(["emacsclient", "--eval", elisp]) do |p|
+          p.readlines
+          p.close
+        end if pn.exist? && !failed_paths.empty?
+      end
+
       def _run_all_after_pass
         return unless options[:all_after_pass]
         run_all
@@ -105,6 +124,7 @@ def _process_run_result(result, all)
         inspector.failed(failed_paths)
         notifier.notify(summary)
         _open_launchy
+        _open_emacs(failed_paths)
 
         _run_all_after_pass if !all && result
       end

spec/lib/guard/rspec/runner_spec.rb

@@ -210,6 +210,20 @@
 
         runner.run(paths)
       end
+      context "with emacs option" do
+        let(:options) { { cmd: "rspec", emacs: "emacs_path" } }
+
+        before do
+          allow(Pathname).to receive(:new).
+            with("emacs_path") { double(exist?: true) }
+        end
+
+        it "opens emacs" do
+          expect(IO).to receive(:popen).
+            with(array_including("emacsclient", "--eval"))
+          runner.run(paths)
+        end
+      end
     end
 
     it "notifies success" do