diff options
Diffstat (limited to 'spec/ruby/core/float/divmod_spec.rb')
-rw-r--r-- | spec/ruby/core/float/divmod_spec.rb | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/core/float/divmod_spec.rb b/spec/ruby/core/float/divmod_spec.rb new file mode 100644 index 0000000000..174f142c86 --- /dev/null +++ b/spec/ruby/core/float/divmod_spec.rb @@ -0,0 +1,43 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#divmod" do + it "returns an [quotient, modulus] from dividing self by other" do + values = 3.14.divmod(2) + values[0].should eql(1) + values[1].should be_close(1.14, TOLERANCE) + values = 2.8284.divmod(3.1415) + values[0].should eql(0) + values[1].should be_close(2.8284, TOLERANCE) + values = -1.0.divmod(bignum_value) + values[0].should eql(-1) + values[1].should be_close(9223372036854775808.000, TOLERANCE) + values = -1.0.divmod(1) + values[0].should eql(-1) + values[1].should eql(0.0) + end + + # Behaviour established as correct in r23953 + it "raises a FloatDomainError if self is NaN" do + lambda { nan_value.divmod(1) }.should raise_error(FloatDomainError) + end + + # Behaviour established as correct in r23953 + it "raises a FloatDomainError if other is NaN" do + lambda { 1.divmod(nan_value) }.should raise_error(FloatDomainError) + end + + # Behaviour established as correct in r23953 + it "raises a FloatDomainError if self is Infinity" do + lambda { infinity_value.divmod(1) }.should raise_error(FloatDomainError) + end + + it "raises a ZeroDivisionError if other is zero" do + lambda { 1.0.divmod(0) }.should raise_error(ZeroDivisionError) + lambda { 1.0.divmod(0.0) }.should raise_error(ZeroDivisionError) + end + + # redmine #5276" + it "returns the correct [quotient, modulus] even for large quotient" do + 0.59.divmod(7.761021455128987e-11).first.should eql(7602092113) + end +end |