```ruby
require File.join(File.dirname(__FILE__), 'cucumber')

require 'mechanize'
require 'logger'

module Castanet::Cucumber
  ##
  # Provides helpers & a DSL for testing a deployed set of
  # applications with Mechanize.
  module MechanizeTest
    def agent
      @agent ||= Mechanize.new { |a|
        a.log = Logger.new("#{tmpdir}/mechanize.log")
        # Default to simulating interactive access
        a.user_agent_alias = 'Linux Firefox'
        a.verify_mode = OpenSSL::SSL::VERIFY_NONE
      }
    end

    def page
      @page or raise "No page has been requested yet"
    end

    def headers
      @headers ||= { 'Accept' => 'text/html' }
    end

    def header(name, value)
      if value
        headers[name] = value
      else
        headers.delete name
      end
    end

    def get(url)
      begin
        @page = agent.get(url, [], nil, headers)
      rescue Mechanize::ResponseCodeError => e
        @page = e.page
      end
      @headers = nil
    end

    def submit(form, button=nil)
      button ||= form.buttons.first
      begin
        @page = agent.submit(form, button, headers)
      rescue Mechanize::ResponseCodeError => e
        @page = e.page
      end
      @headers = nil
    end
  end
end
```

Move MechanizeTest out of its enclosing module.
user
```ruby
require 'mechanize'
require 'logger'

##
# Provides helpers & a DSL for testing a deployed set of
# applications with Mechanize.
module MechanizeTest
  def agent
    @agent ||= Mechanize.new { |a|
      a.log = Logger.new("#{tmpdir}/mechanize.log")
      # Default to simulating interactive access
      a.user_agent_alias = 'Linux Firefox'
      a.verify_mode = OpenSSL::SSL::VERIFY_NONE
    }
  end

  def page
    @page or raise "No page has been requested yet"
  end

  def headers
    @headers ||= { 'Accept' => 'text/html' }
  end

  def header(name, value)
    if value
      headers[name] = value
    else
      headers.delete name
    end
  end

  def get(url)
    begin
      @page = agent.get(url, [], nil, headers)
    rescue Mechanize::ResponseCodeError => e
      @page = e.page
    end
    @headers = nil
  end

  def submit(form, button=nil)
    button ||= form.buttons.first
    begin
      @page = agent.submit(form, button, headers)
    rescue Mechanize::ResponseCodeError => e
      @page = e.page
    end
    @headers = nil
  end
end
```
assistant