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require_relative "../../spec_helper"
require_relative "../integer/shared/integer_floor_precision"
describe "Rational#floor" do
context "with values equal to integers" do
it_behaves_like :integer_floor_precision, :Rational
end
before do
@rational = Rational(2200, 7)
end
describe "with no arguments (precision = 0)" do
it "returns the Integer value rounded toward negative infinity" do
@rational.floor.should.eql? 314
Rational(1, 2).floor.should.eql? 0
Rational(-1, 2).floor.should.eql?(-1)
Rational(1, 1).floor.should.eql? 1
end
end
describe "with a precision < 0" do
it "moves the rounding point n decimal places left, returning an Integer" do
@rational.floor(-3).should.eql? 0
@rational.floor(-2).should.eql? 300
@rational.floor(-1).should.eql? 310
Rational(100, 2).floor(-1).should.eql? 50
Rational(100, 2).floor(-2).should.eql? 0
Rational(-100, 2).floor(-1).should.eql?(-50)
Rational(-100, 2).floor(-2).should.eql?(-100)
end
end
describe "with a precision > 0" do
it "moves the rounding point n decimal places right, returning a Rational" do
@rational.floor(1).should.eql? Rational(1571, 5)
@rational.floor(2).should.eql? Rational(7857, 25)
@rational.floor(3).should.eql? Rational(62857, 200)
Rational(100, 2).floor(1).should.eql? Rational(50, 1)
Rational(100, 2).floor(2).should.eql? Rational(50, 1)
Rational(-100, 2).floor(1).should.eql? Rational(-50, 1)
Rational(-100, 2).floor(2).should.eql? Rational(-50, 1)
end
end
end
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