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require_relative '../../spec_helper'
require 'bigdecimal'
describe "BigDecimal#to_r" do
it "returns a Rational" do
BigDecimal("3.14159").to_r.should.is_a?(Rational)
end
it "returns a Rational with bignum values" do
r = BigDecimal("3.141592653589793238462643").to_r
r.numerator.should.eql?(3141592653589793238462643)
r.denominator.should.eql?(1000000000000000000000000)
end
it "returns a Rational from a BigDecimal with an exponent" do
r = BigDecimal("1E2").to_r
r.numerator.should.eql?(100)
r.denominator.should.eql?(1)
end
it "returns a Rational from a negative BigDecimal with an exponent" do
r = BigDecimal("-1E2").to_r
r.numerator.should.eql?(-100)
r.denominator.should.eql?(1)
end
end
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