require_relative '../../spec_helper' describe "Complex#abs2" do it "returns the sum of the squares of the real and imaginary parts" do Complex(1, -2).abs2.should == 1 + 4 Complex(-0.1, 0.2).abs2.should be_close(0.01 + 0.04, TOLERANCE) Complex(0).abs2.should == 0 end end