Money Specs.rb

require 'spec_helper'

describe Price do
  it "formats a price correctly" do
    Price.new(1.00).to_s.should == '$1.00'
    Price.new(3.4).to_s.should == '$3.40'
    Price.new(3000).to_s.should == '$30.00'
    Price.new(3001).to_s.should == '$30.01'
    Price.new(300000).to_s.should == '$3,000.00'
    Price.new(0.1).to_s.should == '$0.10'
    Price.new(0.01).to_s.should == '$0.01'
    Price.new(0.10).to_s.should == '$0.10'
    Price.new(0.99).to_s.should == '$0.99'
    Price.new(19.99).to_s.should == '$19.99'
  end
  
  it "stores cents accuratly" do 
    Price.new(1).amount.should == 1
    Price.new(100).amount.should == 100
    Price.new(10000).amount.should == 10000
    Price.new(1.4).amount.should == 140
    Price.new('$3').amount.should == 300
    Price.new('$3.50').amount.should == 350
    Price.new('$19.99').amount.should == 1999
    Price.new('$300.50').amount.should == 30050
    Price.new('$300.5').amount.should == 30050
    Price.new('$300.0049').amount.should == 30000
    Price.new('$300.0051').amount.should == 30001
  end
  
  it "is sane" do
    Price.new('$3.50').to_s.should == '$3.50'
    Price.new('$344.50').to_s.should == '$344.50'
    Price.new('$19.99').to_s.should == '$19.99'
    Price.new('$19.01').to_s.should == '$19.01'
    Price.new('$3,444.50').to_s.should == '$3,444.50'
    Price.new('$3,444.501').to_s.should == '$3,444.50'
    Price.new('$3,444.509').to_s.should == '$3,444.51'
    Price.new('$3,444.5').to_s.should == '$3,444.50'
  end
end