RSPEC test and Ruby Object -

so i'm trying write code make rspec test pass ruby. i'm having trouble getting first test pass. think if can have little this, i'll able rest. can post rest of tests if makes easier offer advice.

so it's constructing fahrenheit/celsius converter, using objects , classes instead of defining couple of methods conversions.

the first part looks

   require "temperature"  describe temperature    describe "can constructed options hash"     describe "in degrees fahrenheit"       "at 50 degrees"         temperature.new(:f => 50).in_fahrenheit.should == 50       end 

one of hints in instructions says temperature object constructer should accept options hash either :celsius or :fahrenheit entry.

any or hints appreciated. i've been stuck on test last few weeks. in advance.

i think temperature class needs work. why not have 'scale' attribute can set base value of temperature object?

here's modified version of you've posted:

class temperature   attr_accessor :value, :scale   def initialize(value, options={})     @value = value     if options.has_key?(:scale)       @scale = options[:scale]     else       @scale = :c     end   end   def in_fahrenheit()     if @scale == :c       ( @value * 9.0/5.0 ) + 32.0      else       @value     end   end  end 

there's no need create new temperature object when call #in_fahrenheit. can make current object convert number (stored in attribute) fahrenheit. can add temperature information when create object:

t1=temperature.new(68, :scale =>:f) t2=temperature.new(0)  2.0.0dev :199 > t1.in_fahrenheit  => 68  2.0.0dev :200 > t2.in_fahrenheit  => 32.0