* How to assert "throw" by ERT?
@ 2013-01-17 21:03 Oleksandr Gavenko
2013-01-18 3:15 ` Dmitry Gutov
0 siblings, 1 reply; 2+ messages in thread
From: Oleksandr Gavenko @ 2013-01-17 21:03 UTC (permalink / raw)
To: help-gnu-emacs
ERT is Emacs Lisp Regression Testing and ERT packed in GNU Emacs.
I want to check that my function throw on some input data:
(defun foo (arg) (unless arg (throw :invalid-arg nil)))
I write:
(ert-deftest foo-fail-test ()
(should-error (foo nil) :type :invalid-arg)
)
but seems this is wrong usege or 'should-error'.
Please help me with example...
--
Best regards!
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: How to assert "throw" by ERT?
2013-01-17 21:03 How to assert "throw" by ERT? Oleksandr Gavenko
@ 2013-01-18 3:15 ` Dmitry Gutov
0 siblings, 0 replies; 2+ messages in thread
From: Dmitry Gutov @ 2013-01-18 3:15 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: help-gnu-emacs
Oleksandr Gavenko <gavenkoa@gmail.com> writes:
> ERT is Emacs Lisp Regression Testing and ERT packed in GNU Emacs.
>
> I want to check that my function throw on some input data:
>
> (defun foo (arg) (unless arg (throw :invalid-arg nil)))
>
> I write:
>
> (ert-deftest foo-fail-test ()
> (should-error (foo nil) :type :invalid-arg)
> )
>
> but seems this is wrong usege or 'should-error'.
In Emacs Lisp, `throw' and `catch' are a control flow mechanism, not
exception handling primitives. But your function will indeed error,
because it can't find a matching `catch' block. This test passes:
(ert-deftest foo-fail-test ()
(should-error (foo nil) :type 'no-catch))
^ permalink raw reply [flat|nested] 2+ messages in thread
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