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require_relative "../../spec_helper"
describe "Rational#%" do
it "returns the remainder when this value is divided by other" do
(Rational(2, 3) % Rational(2, 3)).should == Rational(0, 1)
(Rational(4, 3) % Rational(2, 3)).should == Rational(0, 1)
(Rational(2, -3) % Rational(-2, 3)).should == Rational(0, 1)
(Rational(0, -1) % -1).should == Rational(0, 1)
(Rational(7, 4) % Rational(1, 2)).should == Rational(1, 4)
(Rational(7, 4) % 1).should == Rational(3, 4)
(Rational(7, 4) % Rational(1, 7)).should == Rational(1, 28)
(Rational(3, 4) % -1).should == Rational(-1, 4)
(Rational(1, -5) % -1).should == Rational(-1, 5)
end
it "returns a Float value when the argument is Float" do
(Rational(7, 4) % 1.0).should be_kind_of(Float)
(Rational(7, 4) % 1.0).should == 0.75
(Rational(7, 4) % 0.26).should be_close(0.19, 0.0001)
end
it "raises ZeroDivisionError on zero denominator" do
-> {
Rational(3, 5) % Rational(0, 1)
}.should raise_error(ZeroDivisionError)
-> {
Rational(0, 1) % Rational(0, 1)
}.should raise_error(ZeroDivisionError)
-> {
Rational(3, 5) % 0
}.should raise_error(ZeroDivisionError)
end
it "raises a ZeroDivisionError when the argument is 0.0" do
-> {
Rational(3, 5) % 0.0
}.should raise_error(ZeroDivisionError)
end
end
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