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describe :bignum_modulo, :shared => true do
before(:each) do
@bignum = bignum_value
end
it "returns the modulus obtained from dividing self by the given argument" do
@bignum.send(@method, 5).should == 3
@bignum.send(@method, -5).should == -2
@bignum.send(@method, -100).should == -92
@bignum.send(@method, 2.22).should be_close(0.780180180180252, TOLERANCE)
@bignum.send(@method, bignum_value(10)).should == 9223372036854775808
end
it "raises a ZeroDivisionError when the given argument is 0" do
lambda { @bignum.send(@method, 0) }.should raise_error(ZeroDivisionError)
lambda { (-@bignum).send(@method, 0) }.should raise_error(ZeroDivisionError)
end
ruby_version_is ""..."1.9" do
it "does not raise a FloatDomainError when the given argument is 0 and a Float" do
@bignum.send(@method, 0.0).to_s.should == "NaN"
(-@bignum).send(@method, 0.0).to_s.should == "NaN"
end
end
ruby_version_is "1.9" do
it "raises a ZeroDivisionError when the given argument is 0 and a Float" do
lambda { @bignum.send(@method, 0.0) }.should raise_error(ZeroDivisionError)
lambda { -@bignum.send(@method, 0.0) }.should raise_error(ZeroDivisionError)
end
end
it "raises a TypeError when given a non-Integer" do
lambda { @bignum.send(@method, mock('10')) }.should raise_error(TypeError)
lambda { @bignum.send(@method, "10") }.should raise_error(TypeError)
lambda { @bignum.send(@method, :symbol) }.should raise_error(TypeError)
end
end
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