require 'mathn'

describe "Fixnum#**" do
  it "returns self raised to other (positive) power" do
    (2 ** 4).should == 16
    (2 ** 1.2).should be_close(2.2973967, TOLERANCE)
  end

  ruby_version_is '1.9' do
    it "returns a complex number when negative and raised to a fractional power" do
      ((-8) ** (1/3)).should be_close(Complex(1, 1.73205), TOLERANCE)
      ((-8) ** (1.0/3)).should be_close(Complex(1, 1.73205), TOLERANCE)
    end
  end
end