Initial feature to check the files are generated in one case

.gitignore

@@ -1,3 +1,4 @@
 Manifest
 pkg
-doc
+doc
+tmp

features/descriptions/skeleton.feature

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+Feature: cucumber:skeleton
+  In order to quickly set up Cucumber
+  As a Rails developer
+  I want to have the Cucumber skeleton generate automatically
+
+  Scenario: Rails 2 with Capybara
+    Given I'm using Ruby 1.8.7 and Rails 2.3.5
+    And a Rails app "rails-2-app"
+    When I run "script/generate cucumber --capybara" in the app
+    Then I will have the following new files and directories
+      | name                                   |
+      | config/cucumber.yml                    |
+      | config/environments/cucumber.rb        |
+      | script/cucumber                        |
+      | features/step_definitions              |
+      | features/step_definitions/web_steps.rb |
+      | features/support                       |
+      | features/support/env.rb                |
+      | features/support/paths.rb              |
+      | lib/tasks                              |
+      | lib/tasks/cucumber.rake                |

features/step_definitions/cucumber_rails_steps.rb

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+# TODO ~/.bash_profile
+
+Given /^I'm using Ruby (.*) and Rails (.*)$/ do |ruby_version, rails_version|
+  @commands = Commands.new(ruby_version, rails_version)
+end
+
+Given /^a Rails app "(.*)"$/ do |app_name|
+  @rails_app = @commands.new_rails_app(app_name)
+end
+
+When /^I run "script\/(.*)" in the app$/ do |command|
+  @rails_app.script(command)
+end
+
+Spec::Matchers.define :have_files do |expected_files|
+  match do |rails_app|
+    actual_files = rails_app.files
+    @missing_files = expected_files - actual_files
+    @missing_files.empty?
+  end
+
+  failure_message_for_should do |expected_files|
+    "Rails app was missing these files:\n" + @missing_files.map { |file| "  #{file}" }.join("\n")
+  end
+end
+
+Then /^I will have the following new files and directories$/ do |table|
+  expected_files = table.hashes.collect { |row| row[:name] }
+  @rails_app.should have_files(expected_files)
+end

features/support/commands.rb

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+class Commands
+  def initialize(ruby_version, rails_version)
+    @ruby_version = ruby_version
+    check_version("Ruby", @ruby_version, %w[ 1.8.7  1.9.1 ])
+
+    @rails_version = rails_version
+    check_version("Rails", @rails_version, %w[ 2.3.5 ])
+
+    @runner = Runner.new("tmp", @ruby_version, @rails_version)
+  end
+
+  def new_rails_app(app_name)
+    @runner.rails("#{app_name}")
+    runner = Runner.new("tmp/#{app_name}", @ruby_version, @rails_version)
+    RailsApp.new(app_name, @rails_version, runner)
+  end
+
+  private
+
+  def check_version(command, version, allowed_versions)
+    raise %Q{Invalid #{command} version "#{version}"} unless allowed_versions.include?(version)
+  end
+end

features/support/commands/rails_app.rb

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+class Commands
+  class RailsApp
+    def initialize(app_name, rails_version, runner)
+      @app_name = app_name
+      @rails_version = rails_version
+      @runner = runner
+    end
+
+    def script(options)
+      @runner.rvm("script/#{options}")
+    end
+
+    def files
+      @runner.files
+    end
+  end
+end

features/support/commands/runner.rb

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+class Commands
+  class Runner
+    attr_reader :command_history
+
+    def initialize(directory, ruby_version, rails_version)
+      @directory = directory
+      @ruby_version = ruby_version
+      @rails_version = rails_version
+      @command_history = []
+    end
+
+    def rails(options)
+      rvm("rails _#{@rails_version}_ #{options}")
+    end
+
+    def rvm(command)
+      run_and_log("rvm #{@ruby_version} -S #{command}")
+    end
+
+    def files
+      in_runner_dir do
+        Dir["**/*"]
+      end
+    end
+
+    private
+
+    def run_and_log(command)
+      in_runner_dir do
+        @command_history << command
+        `#{command}`
+      end
+    end
+
+    def in_runner_dir
+      Dir.chdir(@directory) do
+        yield
+      end
+    end
+  end
+end

features/support/env.rb

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+require 'rubygems'
+
+gem 'rspec', '1.3.0'
+require 'spec'
+
+Before do
+  Dir.mkdir("tmp") unless Dir.exist?("tmp")
+  system "rm -rf tmp/*"
+end

features/support/gemfiles/ruby_187_rails_2.gemfile

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+# TODO use this to set up the rvm environments
+# gem "bundler"
+gem "rails", "2.3.5"
+gem "cucumber-rails"
+gem "capybara"
+gem "webrat"