diff options
Diffstat (limited to 'spec/ruby/core/integer/shared/modulo.rb')
| -rw-r--r-- | spec/ruby/core/integer/shared/modulo.rb | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/spec/ruby/core/integer/shared/modulo.rb b/spec/ruby/core/integer/shared/modulo.rb index b06d81e17d..d91af1e924 100644 --- a/spec/ruby/core/integer/shared/modulo.rb +++ b/spec/ruby/core/integer/shared/modulo.rb @@ -1,6 +1,12 @@ describe :integer_modulo, shared: true do context "fixnum" do it "returns the modulus obtained from dividing self by the given argument" do + # test all possible combinations: + # - integer/double/bignum argument + # - positive/negative argument + # - positive/negative self + # - self greater/smaller than argument + 13.send(@method, 4).should == 1 4.send(@method, 13).should == 4 @@ -16,8 +22,22 @@ describe :integer_modulo, shared: true do (200).send(@method, -256).should == -56 (1000).send(@method, -512).should == -24 + 13.send(@method, -4.0).should == -3.0 + 4.send(@method, -13.0).should == -9.0 + + -13.send(@method, -4.0).should == -1.0 + -4.send(@method, -13.0).should == -4.0 + + -13.send(@method, 4.0).should == 3.0 + -4.send(@method, 13.0).should == 9.0 + 1.send(@method, 2.0).should == 1.0 200.send(@method, bignum_value).should == 200 + + 4.send(@method, bignum_value(10)).should == 4 + 4.send(@method, -bignum_value(10)).should == -18446744073709551622 + -4.send(@method, bignum_value(10)).should == 18446744073709551622 + -4.send(@method, -bignum_value(10)).should == -4 end it "raises a ZeroDivisionError when the given argument is 0" do @@ -44,15 +64,35 @@ describe :integer_modulo, shared: true do context "bignum" do before :each do - @bignum = bignum_value + @bignum = bignum_value(10) 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 + # test all possible combinations: + # - integer/double/bignum argument + # - positive/negative argument + # - positive/negative self + # - self greater/smaller than argument + + @bignum.send(@method, 5).should == 1 + @bignum.send(@method, -5).should == -4 + (-@bignum).send(@method, 5).should == 4 + (-@bignum).send(@method, -5).should == -1 + + @bignum.send(@method, 2.22).should be_close(1.5603603603605034, TOLERANCE) + @bignum.send(@method, -2.22).should be_close(-0.6596396396394968, TOLERANCE) + (-@bignum).send(@method, 2.22).should be_close(0.6596396396394968, TOLERANCE) + (-@bignum).send(@method, -2.22).should be_close(-1.5603603603605034, TOLERANCE) + + @bignum.send(@method, @bignum + 10).should == 18446744073709551626 + @bignum.send(@method, -(@bignum + 10)).should == -10 + (-@bignum).send(@method, @bignum + 10).should == 10 + (-@bignum).send(@method, -(@bignum + 10)).should == -18446744073709551626 + + (@bignum + 10).send(@method, @bignum).should == 10 + (@bignum + 10).send(@method, -@bignum).should == -18446744073709551616 + (-(@bignum + 10)).send(@method, @bignum).should == 18446744073709551616 + (-(@bignum + 10)).send(@method, -@bignum).should == -10 end it "raises a ZeroDivisionError when the given argument is 0" do |