gistfile1.txt

describe "let behavior" do
  foo = "original recipe"
  let(:foo) { "extra crispy" }

  specify { foo.should == "extra crispy" }
end

out.txt

% rspec let.rb
F

Failures:

  1) let behavior
     Failure/Error: specify { foo.should == "extra crispy" }
       expected: "extra crispy"
            got: "original recipe" (using ==)
     # ./let.rb:5:in `block (2 levels) in <top (required)>'

Finished in 0.00035 seconds
1 example, 1 failure