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import functools
import importlib
import importlib._bootstrap
import unittest
using___import__ = False
def import_(*args, **kwargs):
"""Delegate to allow for injecting different implementations of import."""
if using___import__:
return __import__(*args, **kwargs)
else:
return importlib.__import__(*args, **kwargs)
def importlib_only(fxn):
"""Decorator to skip a test if using __builtins__.__import__."""
return unittest.skipIf(using___import__, "importlib-specific test")(fxn)
def mock_path_hook(*entries, importer):
"""A mock sys.path_hooks entry."""
def hook(entry):
if entry not in entries:
raise ImportError
return importer
return hook
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