guile/test-suite/tests/copy-tree.test

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;;;;   Free Software Foundation, Inc.
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;;;; Lesser General Public License for more details.
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(define-module (test-suite test-copy-tree)
  :use-module (test-suite lib)
  :use-module (ice-9 copy-tree))

(with-test-prefix "copy-tree"
  (pass-if "(#t . #(#t))"
    (let* ((foo (cons #t (vector #t)))
           (bar (copy-tree foo)))
      (vector-set! (cdr foo) 0 #f)
      (equal? bar '(#t . #(#t)))))

  (pass-if-exception "circular lists in forms"
      '(wrong-type-arg . "")
    (let ((foo (list #f)))
      (set-cdr! foo foo)
      (copy-tree foo))))