Inaccurate filename due to test class metaprogramming that doesn't set __file__ and __name__

[ezyang]

Inaccurate filename due to test class metaprogramming that doesn't set __file__ and __name__

[janeyx99]

cc @jbschlosser

[jbschlosser]

From what I can tell, the __file__ attribute is only intended to be present on module objects and not type objects. For a type object, I think inspect.getfile(test_class_type) (which is used for the repro command) will check the __file__ attribute of the module referenced by the type's __module__ attribute.

For this particular example, the __module__ attribute is inherited from the parent class by the metaprogrammed class via dct:

pytorch/test/inductor/test_compiled_autograd.py

Lines 1519 to 1523 in a988b4e

	return type(
	orig_cls.__name__ + "WithCompiledAutograd",
	orig_cls.__bases__,
	dct,
	)

This results in the wrong path being reported by the repro command.

>>> sys.modules[TestAutogradWithCompiledAutograd.__module__].__file__
'/home/jbschlosser/pytorch/test/test_autograd.py'
>>> inspect.getfile(TestAutogradWithCompiledAutograd)
'/home/jbschlosser/pytorch/test/test_autograd.py'

I'd suggest ensuring __module__ is correct for the metaprogrammed class, but idk if this is possible since the file it's defined in may not be related to a loaded module.

[ezyang]

Huh, I guess it checks __file__ anyway. Fixing __module__ should work. Using the original cls module seems like the ticket.