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require_relative '../../spec_helper'
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
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