Spec example description

[gummybears]

Let say I want to test some math operation

it "1 + 2" do
  expr = "1 + 2"
  mytest(expr)
end

I would like to do this

it "1 + 2" do
  expr = get_description_of_this_spec()
  # expr should no hold "1 + 2"
  mytest(expr)
end