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(defmacro error-to-sym (expr)
^(catch ,expr
(error (cond) :error)))
(defmacro vtest (:env env expr expected)
(catch
(let ((expr-expn (macroexpand expr env))
(expval (gensym)))
^(let ((,expval ,expected))
(ifa (not (equal (error-to-sym ,expr-expn) ,expval))
(error "test case ~s failed: produced ~s; expected ~s"
',expr it ,expval))))
(error (exc)
(unless (eq expected :error)
(error "test case ~s failed to expand: expected is ~s" expr expected)))))
(defmacro test (expr expected)
^(vtest ,expr ',expected))
(defmacro stest (expr expected)
^(vtest ,^(tostring ,expr) ,expected))
(defmacro mtest (. pairs)
^(progn ,*(mapcar (op cons 'test) (tuples 2 pairs))))
(defun osname ()
(with-stream (u (open-command "(uname -o || uname) 2> /dev/null"))
(get-line u)))
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