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Feature: Added a furlongs to km method with two additional tests. #11

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Feature: Added a furlongs to km method with two additional tests. #11

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7 changes: 6 additions & 1 deletion furlong.rb
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Original file line number Diff line number Diff line change
@@ -1,7 +1,12 @@
class Furlong

KM_PER_MILE = 1.60934
FURLONG_PER_KM = 0.201168
def miles_to_kilometers(miles)
miles * KM_PER_MILE
end
end

def furlongs_to_kilometers(furlong)
furlong * FURLONG_PER_KM
end
end
12 changes: 10 additions & 2 deletions furlong_spec.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -4,12 +4,20 @@
describe Furlong do

let(:calculator) { Furlong.new }

it "converts 1 mile to 1.60934 km" do
subject.miles_to_kilometers(1).should be_within(0.0001).of(1.60934)
end

it "converts a marathon: 26.219 miles to 42.194988 km" do
subject.miles_to_kilometers(26.219).should be_within(0.001).of(42.194988)
end
end

it "converts 1 furlong to 0.201168 km" do
subject.furlongs_to_kilometers(1).should be_within(0.0001).of(0.201168)
end

it "converts 5 furlongs to approx. a km" do
subject.furlongs_to_kilometers(5).should be_within(0.0001).of(1.00584)
end
end