class Shoulda::Matchers::ActionController::AssignToMatcher

def equal_to_expected_value?
  if @options[:check_value]
    if @options[:expected_value] == assigned_value
      @failure_message_for_should_not =
        "Didn't expect action to assign #{@options[:expected_value].inspect} " <<
        "for #{@variable}, but got it anyway"
      true
    else
      @failure_message_for_should =
        "Expected action to assign #{@options[:expected_value].inspect} " <<
        "for #{@variable}, but got #{assigned_value.inspect}"
      false
    end
  else
    true
  end
end