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Add a command_prefix option.

The command_prefix option allows you to prepend any other shell script
to your cucumber execution. For example, for terminal only cucumber
tests you may need to run xvfb-run before the cucumber command. The
command prefix option will allow you to do that.
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mikefarmer committed Jun 19, 2012
1 parent c948ded commit 935d3f09c2e8397c54b5159b34d47f52c9838587
Showing with 16 additions and 0 deletions.
  1. +5 −0
  2. +2 −0 lib/guard/cucumber/runner.rb
  3. +9 −0 spec/guard/cucumber/runner_spec.rb
@@ -94,6 +94,11 @@ Former `:color`, `:drb`, `:port` and `:profile` options are thus deprecated and
:change_format => 'pretty' # Use a different cucumber format when running individual features
# This replaces the Cucumber --format option within the :cli option
# default: nil
:command_prefix => 'xvfb-run' # Add a prefix to the cucumber command such as 'xvfb-run' or any
# other shell script.
# The example generates: 'xvfb-run bundle exec cucumber ...'
# default: nil
## Cucumber configuration
@@ -33,10 +33,12 @@ def run(paths, options = { })
# @option options [Boolean] :bundler use bundler or not
# @option options [Array<String>] :rvm a list of rvm version to use for the test
# @option options [Boolean] :notification show notifications
# @option options [Boolean] :command_prefix allows adding an additional prefix to the cucumber command. Ideal for running xvfb-run for terminal only cucumber tests.
# @return [String] the Cucumber command
def cucumber_command(paths, options)
cmd = []
cmd << options[:command_prefix] if options[:command_prefix]
cmd << "rvm #{options[:rvm].join(',')} exec" if options[:rvm].is_a?(Array)
cmd << 'bundle exec' if (bundler? && options[:bundler] != false) || (bundler? && options[:binstubs].is_a?(TrueClass))
cmd << cucumber_exec(options)
@@ -20,6 +20,15 @@
context 'with a :command_prefix option' do
it 'executes cucumber with the command_prefix option' do
"xvfb-run bundle exec cucumber --require #{ @lib_path.join('guard/cucumber/notification_formatter.rb') } --format Guard::Cucumber::NotificationFormatter --out #{ null_device } --require features features"
)['features'], { :command_prefix => "xvfb-run" })
context 'with a :bundler option' do
it 'runs without bundler when false' do

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