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Diffstat (limited to 'spec/ruby/core/complex/infinite_spec.rb')
-rw-r--r-- | spec/ruby/core/complex/infinite_spec.rb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/spec/ruby/core/complex/infinite_spec.rb b/spec/ruby/core/complex/infinite_spec.rb new file mode 100644 index 0000000000..79792c3169 --- /dev/null +++ b/spec/ruby/core/complex/infinite_spec.rb @@ -0,0 +1,34 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +ruby_version_is "2.4" do + describe "Complex#infinite?" do + it "returns nil if magnitude is finite" do + (1+1i).infinite?.should == nil + end + + it "returns 1 for positive infinity" do + value = Complex(Float::INFINITY, 42).infinite? + value.should == 1 + end + + it "returns 1 for positive complex with infinite imaginary" do + value = Complex(1, Float::INFINITY).infinite? + value.should == 1 + end + + it "returns -1 for negative infinity" do + value = -Complex(Float::INFINITY, 42).infinite? + value.should == -1 + end + + it "returns -1 for negative complex with infinite imaginary" do + value = -Complex(1, Float::INFINITY).infinite? + value.should == -1 + end + + it "returns nil for NaN" do + value = Complex(0, Float::NAN).infinite? + value.should == nil + end + end +end |