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require File.dirname(__FILE__) + '/../../spec_helper'
require 'rational'
describe "Rational#divmod when passed [Rational]" do
it "returns the quotient as Integer and the remainder as Rational" do
Rational(7, 4).divmod(Rational(1, 2)).should eql([3, Rational(1, 4)])
Rational(7, 4).divmod(Rational(-1, 2)).should eql([-4, Rational(-1, 4)])
Rational(0, 4).divmod(Rational(4, 3)).should eql([0, Rational(0, 1)])
Rational(bignum_value, 4).divmod(Rational(4, 3)).should eql([1729382256910270464, Rational(0, 1)])
end
it "raises a ZeroDivisonError when passed a Rational with a numerator of 0" do
lambda { Rational(7, 4).divmod(Rational(0, 3)) }.should raise_error(ZeroDivisionError)
end
end
describe "Rational#divmod when passed [Integer]" do
it "returns the quotient as Integer and the remainder as Rational" do
Rational(7, 4).divmod(2).should eql([0, Rational(7, 4)])
Rational(7, 4).divmod(-2).should eql([-1, Rational(-1, 4)])
Rational(bignum_value, 4).divmod(3).should == [768614336404564650, Rational(2, 1)]
end
it "raises a ZeroDivisionError when passed 0" do
lambda { Rational(7, 4).divmod(0) }.should raise_error(ZeroDivisionError)
end
end
describe "Rational#divmod when passed [Float]" do
it "returns the quotient as Integer and the remainder as Float" do
Rational(7, 4).divmod(0.5).should eql([3, 0.25])
end
ruby_bug "#", "1.8.6" do # Fixed at MRI 1.8.7
it "returns the quotient as Integer and the remainder as Float" do
Rational(7, 4).divmod(-0.5).should eql([-4, -0.25])
end
end
it "raises a FloatDomainError when passed 0" do
lambda { Rational(7, 4).divmod(0.0) }.should raise_error(FloatDomainError)
end
end
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