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Re: Blessing with unknown classnames

by perlfan (Vicar)
on Apr 02, 2021 at 05:27 UTC ( [id://11130700]=note: print w/replies, xml ) Need Help??


in reply to Blessing with unknown classnames

In addition to the comments below, not only can you bless a reference to any string (existing package or not); you may also do so with an existing "oop" module; wishing to bypass the constructor. I will do this when writing in unit tests (and/or mocking), for example - particularly when the construct does nothing special and I wish to focus on a specific methods or two. Note, however; other rules do apply; for example if the package has a DESTROY method or AUTOLOAD method defined; these will still get called as you'd normally expect. E.g.,

# bypass constructor, don't care about stuff done in Targeted::Module: +:new my $sneaky_instantiation = bless {}, q{Targeted::Module}; # now call any method, e.g., for a unit test isa_ok q{Targeted::Module}, $sneaky_instantiation; ok q{expected value} eq $sneaky_instantiation->_internal_method(), q{u +nit test for _internal_method};

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