Cucumber Tips。 フィーチャのシナリオステップ名にマッピングされている「ステップ定義」を検索する。

find_step_definition.rb

# encoding: utf-8
#!/usr/bin/env ruby
require "./runtime"

if ARGV.empty?
  STDERR.puts "Must be specified STEP_NAME"
  exit 1
end
step_name = ARGV.shift
runtime = Runtime.new(ARGV.dup)

step_match = runtime.step_match(step_name)
step_definition = step_match.step_definition
puts "step definition"
puts "\tfile:\t#{step_definition.file}"
puts "\tline:\t#{step_definition.file_colon_line.delete("#{step_definition.file}:")}"
puts "\tstep:\t#{step_definition.to_hash}"

puts "\targuments:"
step_match.step_arguments.each do |arg|
  puts "\t\t#{arg.to_hash}"
end

runtime.rb

require "cucumber"

module Cucumber
  class Runtime
    def load
      load_step_definitions
    end
  end
end

class Runtime
  def initialize(args=[])
    @configuration = Cucumber::Cli::Configuration.new(STDOUT, STDERR)
    @configuration.parse!(args)
    @runtime = Cucumber::Runtime.new(@configuration)
    @runtime.load
  end

  def step_match(step_name)
    @runtime.step_match(step_name)
  end

  def write_stepdefs_json
    @runtime.write_stepdefs_json
    puts "write to " + File.expand_path(Dir.glob("#{@configuration.dotcucumber}/*").first) if @configuration.dotcucumber
  end
end

実行結果

$ ruby find_step_definition.rb "the result should be 1.5 on the screen" examples/i18n/en/features/
step definition
  file:	examples/i18n/en/features/step_definitons/calculator_steps.rb
	line:	22
	step:	{"source"=>"the result should be (.*) on the screen", "flags"=>""}
	arguments:
		{"offset"=>21, "val"=>"1.5"}