;Chapter 5, Bryan Test 1, Page 89-91

(deftest test-multiple-returns ()
  (let ((ht (make-hash-table));creates a new hash table
        (val nil))
    (setf (gethash 'Make ht) val);sets the key Make in the hash table to nil.
    (check
      (numberp (get-decoded-time));does get-decoded-time return a number? Yes, b/c it discards all the values that are not needed
      (not (gethash 'Make ht));this evaluates to false b/c the value Make was set to is the first value
      (car (cdr (multiple-value-list (gethash 'Make ht))))))); this gets the second value for Make, the one that says if it was set or not.