check_module_spec() and check_module_specs()

[aferreira]

check_module_spec($spec);           # dies on invalid spec
check_module_specs(@specs);      # dies on invalid specs

check_modules([$op], @specs);   # same signatures as need_modules
check_modules([$op], \%specs);

Think of a sensible way to test extended specs as hashrefs \%specs (with more than one module spec).

[aferreira]

Notice that need_modules() does not perform this kind of validation. That means that in a machine

need_modules(-oneof => @specs);

may work and then in another machine it may reach a validation error.