File: uminus_spec.rb

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require File.expand_path('../../../spec_helper', __FILE__)

describe "Fixnum#-@" do
  it "returns self as a negative value" do
    2.send(:-@).should == -2
    -2.should == -2
    -268435455.should == -268435455
    (--5).should == 5
    -8.send(:-@).should == 8
  end

  it "negates self at Fixnum/Bignum boundaries" do
    fixnum_max.send(:-@).should == (0 - fixnum_max)
    fixnum_min.send(:-@).should == (0 - fixnum_min)
  end
end