diff options
Diffstat (limited to 'spec/ruby/core/float/shared/modulo.rb')
-rw-r--r-- | spec/ruby/core/float/shared/modulo.rb | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/spec/ruby/core/float/shared/modulo.rb b/spec/ruby/core/float/shared/modulo.rb new file mode 100644 index 0000000000..6c423a3a28 --- /dev/null +++ b/spec/ruby/core/float/shared/modulo.rb @@ -0,0 +1,48 @@ +describe :float_modulo, shared: true do + it "returns self modulo other" do + 6543.21.send(@method, 137).should be_close(104.21, TOLERANCE) + 5667.19.send(@method, bignum_value).should be_close(5667.19, TOLERANCE) + 6543.21.send(@method, 137.24).should be_close(92.9299999999996, TOLERANCE) + + -1.0.send(@method, 1).should == 0 + end + + it "returns self when modulus is +Infinity" do + 4.2.send(@method, Float::INFINITY).should == 4.2 + end + + it "returns -Infinity when modulus is -Infinity" do + 4.2.send(@method, -Float::INFINITY).should == -Float::INFINITY + end + + it "returns NaN when called on NaN or Infinities" do + Float::NAN.send(@method, 42).should be_nan + Float::INFINITY.send(@method, 42).should be_nan + (-Float::INFINITY).send(@method, 42).should be_nan + end + + it "returns NaN when modulus is NaN" do + 4.2.send(@method, Float::NAN).should be_nan + end + + it "returns -0.0 when called on -0.0 with a non zero modulus" do + r = (-0.0).send(@method, 42) + r.should == 0 + (1/r).should < 0 + + r = (-0.0).send(@method, Float::INFINITY) + r.should == 0 + (1/r).should < 0 + end + + it "tries to coerce the modulus" do + obj = mock("modulus") + obj.should_receive(:coerce).with(1.25).and_return([1.25, 0.5]) + (1.25 % obj).should == 0.25 + end + + it "raises a ZeroDivisionError if other is zero" do + lambda { 1.0.send(@method, 0) }.should raise_error(ZeroDivisionError) + lambda { 1.0.send(@method, 0.0) }.should raise_error(ZeroDivisionError) + end +end |