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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/quo'
describe "Numeric#quo" do
it "returns the result of self divided by the given Integer as a Rational" do
5.quo(2).should eql(Rational(5,2))
end
it "returns the result of self divided by the given Float as a Float" do
2.quo(2.5).should eql(0.8)
end
it "returns the result of self divided by the given Bignum as a Float" do
45.quo(bignum_value).should be_close(1.04773789668636e-08, TOLERANCE)
end
it "raises a ZeroDivisionError when the given Integer is 0" do
-> { 0.quo(0) }.should raise_error(ZeroDivisionError)
-> { 10.quo(0) }.should raise_error(ZeroDivisionError)
-> { -10.quo(0) }.should raise_error(ZeroDivisionError)
-> { bignum_value.quo(0) }.should raise_error(ZeroDivisionError)
-> { -bignum_value.quo(0) }.should raise_error(ZeroDivisionError)
end
it "calls #to_r to convert the object to a Rational" do
obj = NumericSpecs::Subclass.new
obj.should_receive(:to_r).and_return(Rational(1))
obj.quo(19).should == Rational(1, 19)
end
it "raises a TypeError of #to_r does not return a Rational" do
obj = NumericSpecs::Subclass.new
obj.should_receive(:to_r).and_return(1)
-> { obj.quo(19) }.should raise_error(TypeError)
end
it "raises a TypeError when given a non-Integer" do
-> {
(obj = mock('x')).should_not_receive(:to_int)
13.quo(obj)
}.should raise_error(TypeError)
-> { 13.quo("10") }.should raise_error(TypeError)
-> { 13.quo(:symbol) }.should raise_error(TypeError)
end
it "returns the result of calling self#/ with other" do
obj = NumericSpecs::Subclass.new
obj.should_receive(:to_r).and_return(19.quo(20))
obj.quo(19).should == 1.quo(20)
end
it "raises a ZeroDivisionError if the given argument is zero and not a Float" do
-> { 1.quo(0) }.should raise_error(ZeroDivisionError)
end
it "returns infinity if the given argument is zero and is a Float" do
(1.quo(0.0)).to_s.should == 'Infinity'
(-1.quo(0.0)).to_s.should == '-Infinity'
end
end
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