module RSpec::RubyContentMatchers    
  def have_remove_column(name)
    HaveCall.new('t.remove', ":#{name}")
  end

  def have_add_column(name, type='string')
    HaveCall.new("t.#{type}", ":#{name}")
  end

  def have_change_column(name, type='string')
    HaveCall.new("t.change", ":#{name}\s*,\s*:#{type}")
  end
end