Why (eval (list 'symbol))

eval-list-symbol.el

(setq testvar nil)
nil
(defmacro testmacro ()
  (if testvar "OMG, I passed the test!")
    (pp "I failed! damn!")))
testmacro

(setq test-simple (testmacro))
"I failed! damn!""\"I failed! damn!\""

(setq test-eval (eval (list 'testmacro)))
"I failed! damn!""\"I failed! damn!\""


;; :( the same...

(defun test-simple ()
  (testmacro))
"I failed! damn!"test-simple

(defun test-eval ()
  (eval (list 'testmacro)))
test-eval

;; Already different, but here comes the magic:

(setq testvar t)
t
(test-simple)
"\"I failed! damn!\""
(test-eval)
"OMG, I passed the test!""\"OMG, I passed the test!\""