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require File.expand_path('../../../spec_helper', __FILE__)
describe "Fixnum#divmod" do
it "returns an Array containing quotient and modulus obtained from dividing self by the given argument" do
13.divmod(4).should == [3, 1]
4.divmod(13).should == [0, 4]
13.divmod(4.0).should == [3, 1]
4.divmod(13.0).should == [0, 4]
1.divmod(2.0).should == [0, 1.0]
200.divmod(bignum_value).should == [0, 200]
end
it "raises a ZeroDivisionError when the given argument is 0" do
lambda { 13.divmod(0) }.should raise_error(ZeroDivisionError)
lambda { 0.divmod(0) }.should raise_error(ZeroDivisionError)
lambda { -10.divmod(0) }.should raise_error(ZeroDivisionError)
end
it "raises a ZeroDivisionError when the given argument is 0 and a Float" do
lambda { 0.divmod(0.0) }.should raise_error(ZeroDivisionError)
lambda { 10.divmod(0.0) }.should raise_error(ZeroDivisionError)
lambda { -10.divmod(0.0) }.should raise_error(ZeroDivisionError)
end
it "raises a TypeError when given a non-Integer" do
lambda {
(obj = mock('10')).should_receive(:to_int).any_number_of_times.and_return(10)
13.divmod(obj)
}.should raise_error(TypeError)
lambda { 13.divmod("10") }.should raise_error(TypeError)
lambda { 13.divmod(:symbol) }.should raise_error(TypeError)
end
end
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