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require File.expand_path('../../../spec_helper', __FILE__)
require 'rational'
describe :rational_modulo, :shared => true do
it "returns the remainder when this value is divided by other" do
Rational(2, 3).send(@method, Rational(2, 3)).should == Rational(0, 1)
Rational(4, 3).send(@method, Rational(2, 3)).should == Rational(0, 1)
Rational(2, -3).send(@method, Rational(-2, 3)).should == Rational(0, 1)
Rational(0, -1).send(@method, -1).should == Rational(0, 1)
Rational(7, 4).send(@method, Rational(1, 2)).should == Rational(1, 4)
Rational(7, 4).send(@method, 1).should == Rational(3, 4)
Rational(7, 4).send(@method, Rational(1, 7)).should == Rational(1, 28)
Rational(3, 4).send(@method, -1).should == Rational(-1, 4)
Rational(1, -5).send(@method, -1).should == Rational(-1, 5)
end
it "returns a Float value when the argument is Float" do
Rational(7, 4).send(@method, 1.0).should be_kind_of(Float)
Rational(7, 4).send(@method, 1.0).should == 0.75
Rational(7, 4).send(@method, 0.26).should be_close(0.19, 0.0001)
end
it "raises ZeroDivisionError on zero denominator" do
lambda {
Rational(3, 5).send(@method, Rational(0, 1))
}.should raise_error(ZeroDivisionError)
lambda {
Rational(0, 1).send(@method, Rational(0, 1))
}.should raise_error(ZeroDivisionError)
lambda {
Rational(3, 5).send(@method, 0)
}.should raise_error(ZeroDivisionError)
end
ruby_version_is ""..."1.9" do
it "raises FloatDomainError when the argument is 0.0" do
lambda { Rational(3, 5) % 0.0 }.should raise_error(FloatDomainError)
end
end
ruby_version_is "1.9" do
it "raises a ZeroDivisionError when the argument is 0.0" do
lambda {
Rational(3, 5).send(@method, 0.0)
}.should raise_error(ZeroDivisionError)
end
end
end
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