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 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 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