Testing Ruby alias_method

to_s_and_to_str.rb

class SatoshiVersion
  # ...

  def to_s
    components = @version_components.dup
    components.delete_at(3) if components[3] == 0
    components.join(".")
  end

  alias_method :to_str, :to_s
end

to_s_and_to_str_spec.rb

describe "conversion" do
  describe "to strings" do
    # ...

    it "supports #to_str as an alias of :to_s" do
      version = SatoshiVersion.new(0, 3, 24)
      to_s_method = version.method(:to_s)
      to_str_method = version.method(:to_str)
      to_str_method.should eq to_s_method
    end
  end
end