class RSpec::Matchers::BuiltIn::Eql

def diffable?
  true
end

def failure_message_for_should
  "\nexpected: #{expected.inspect}\n     got: #{actual.inspect}\n\n(compared using eql?)\n"
end

def failure_message_for_should_not
  "\nexpected: value != #{expected.inspect}\n     got: #{actual.inspect}\n\n(compared using eql?)\n"
end

def match(expected, actual)
  actual.eql? expected
end