[erlang-questions] eunit failure - "*** test module not found ***"
Wed Mar 17 12:40:55 CET 2010
> -----Original Message-----
> Behalf Of Graeme Defty
> Sent: 17 March 2010 07:43
> Subject: Re: [erlang-questions] eunit failure - "*** test module not found
> ...and almost exactly right, except that 'true' is not
> the result of a macro but literally the last line of code.
The result and the last line are very often the same.
The result of the test-generating function will be the evaluation of
the basic unprefixed macro, say 'ok' or 'true', which is handled like this:
which says that a single atom is interpreted as a module name,
and presumably EUnit will try to look-up test functions for that module:
and it's the call to true:module_info() that fails with bad module 'true'.
> On 17 March 2010 00:39, French, Mike
> <> wrote:
> > Graeme,
> > I think this occurs when you omit a leading underscore
> > on an eunit macro in a test-generating function.
> > For example, say you write a simple test function using a basic macro:
> > basic_test() -> ?assert( 1 + 1 =:= 2 ).
> > Then you decide to convert it to a test-generating function, you should
> > append an '_' to the function name, and
> > prepend an '_' to the macro name:
> > fancy_test_() -> ?_assert( 1 + 1 =:= 2 ).
> > but if you forget to change the macro name:
> > bad_test_() -> ?assert( 1 + 1 =:= 2 ).
> > then you get the error as you describe:
> > undefined
> > *** test module not found ***
> > ::ok
> > =======================================================
> > Failed: 0. Skipped: 0. Passed: 0.
> > One or more tests were cancelled.
> > error
> > The 'ok' value in the error message is the result of
> > evaluating the function returned by the macro,
> > so your mistake is on a macro that returns 'true'.
> > Mike
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