hospital_patient_chart.rb

describe "Hospital Patient Chart" do 
	it "should have heart rate information" do
	  # heart rate information is numeric
	  # so it should be represented as a number
	  # it's implied that it's beats per minute
	  # (unless you're going to be storing it in
	  # some other format elsewhere)
		HospitalPatientChart.new( 75 ).heart_rate.should == 75
	end
end


class HospitalPatientChart
  # We don't obviously need a setter so I've used attr_reader.
  attr_reader :heart_rate

	def initialize(heart_rate)
		 @heart_rate = heart_rate
	end

end

# It's a patients chart so likely to be their heart rate
patient_chart = HospitalPatientChart.new( 75 )
puts patient_chart.heart_rate