Jirapong

require 'active_record/connection_adapters/abstract_adapter'
require 'mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
require 'System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'

module System
  class DBNull
    def nil?
      true
    end
  end

Jirapong

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="microsoft.scripting" type="Microsoft.Scripting.Hosting.Configuration.Section, Microsoft.Scripting, Version=0.9.5.1, Culture=neutral, PublicKeyToken=null" requirePermission="false" />
  </configSections>

  <microsoft.scripting>
    <languages>
      <language names="IronPython;Python;py" extensions=".py" displayName="IronPython 2.6 Alpha" type="IronPython.Runtime.PythonContext, IronPython, Version=2.6.0.1, Culture=neutral, PublicKeyToken=null" />
      <language names="IronRuby;Ruby;rb" extensions=".rb" displayName="IronRuby 0.3" type="IronRuby.Runtime.RubyContext, IronRuby, Version=0.3.0.0, Culture=neutral, PublicKeyToken=null" />

Jirapong

describe "Widget#foo" do
  it "does something" do
    # This should be the functionality specs specific to the semantics of the method
    Widget.new.foo.should == "do something"
  end
end

# This captures the "type signature" of the method. Here are recipes for corner cases that you might forget.
# Note that the examples are not self-consistent by design. Only some of them might apply to any given method.
# However, the goal below is to include the union of all possible examples so that you can cut and paste