Minilisp.pm/t/dolist.t

(plan 6)

(expect "dolist - body is evaluated with every element"
        (let ((lst (list 1 2 5 'cool 'list 'bro nil))
              (lst-expected (list nil 'bro 'list 'cool 5 2 1))
              (lst-actual (list)))
          (dolist (it lst)
            (set lst-actual (cons it lst-actual)))
          (equal lst-expected lst-actual)))

(expect "dolist - body is not evaluated if list is empty"
        (equal 'ok
               (catch 'test
                 (dolist (e (list))
                   (throw 'test 'fail))
                 'ok)))

(expect "dolist - result form is evaluated"
        (equal 'ok
               (dolist (e (list 1) 'ok))))

(expect "dolist - returns nil if no result form"
        (null (dolist (e (list 1)))))

(expect "dolist - var is bound to nil during result form"
        (equal 'ok
               (catch 'test
                 (dolist (e (list 'fail)
                            (unless (null e)
                              (throw 'test 'fail))))
                 'ok)))

(defun nop () nil)

(expect "dolist - implicit tagbody"
        (equal 'ok
               (catch 'test
                 (dolist (e (list 1) 'ok)
                   nil
                   (go end)
                   middle
                   (throw 'test 'fail)
                   end)
                 'ok)))