How can I validate exits and aborts in RSpec?

Question

I am trying to spec behaviors for command line arguments my script receives to ensure that all validation passes. Some of my command line arguments will result in abo

Answer 1

try this:

module MyGem
  describe "CLI" do
    context "execute" do

      it "should exit cleanly when -h is used" do
        argv=["-h"]
        out = StringIO.new
        lambda { ::MyGem::CLI.execute( out, argv) }.should raise_error SystemExit
      end

    end
  end
end