Show correct error when module has not yet been loaded #72
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I've been having wrong error message for cases when
Mimic.copy
has not been called. It has been showingFunction .... not defined for ...
. This only happened when module has not been used/loaded prior.It has been happening because
function_exported?
has an edge case documented in its docs:So, prior to this fix Mimic would mistakenly think that function does not exist, while it does exist though hasn't been loaded.
fixes #66