ugly debugging harness

debug.rb

require 'capybara'
require 'capybara/dsl'
require 'selenium/webdriver'
require_relative './features/support/lib/api'

Capybara.app_host = 'http://localhost/'
@api = API.new('http://localhost/VersionOne.Web')

Capybara.app = class HarnessRackApp; end

Capybara.register_driver :firefox do |app|
  Capybara::Selenium::Driver.new(Capybara.app, :browser => :firefox)
end

self.include Capybara::DSL

@steps = {}

def When(matcher, &block)
  @steps[matcher] = block
end

def Given(matcher, &block)
  @steps[matcher] = block
end

def Then(matcher, &block)
  @steps[matcher] = block
end

def match(statement)
  code, arguments = nil
  match_count = 0

  @steps.each do |key, val|
    key.match(statement) do |match_data|
      puts "Matched step definition: '#{key.to_s}'"
      code = val
      arguments = match_data.captures
      match_count += 1
    end
  end

  raise "Ambiguous step definitions :[" if match_count > 1

  code.call(arguments) if code
end

usage.sh

cd ~/path/to/cukes

# add a call to binding.pry in one or 
# more step definitions you want to debug

pry -r ./debug.rb -I ./features/step_definitions/

pry> require 'common_steps'
pry> match 'Skip is a Team Lead'

# breaks assuming there's a call to binding.pry
# also very handy: pry_debug gem