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from contextlib import contextmanager
import os
# MockAttributeResult
#
# A class to take a dictionary of kwargs and make them accessible via
# attributes of the object.
#
class MockAttributeResult(dict):
__getattr__ = dict.get
# mock_statvfs():
#
# Gets a function which mocks statvfs and returns a statvfs result with the kwargs accessible.
#
# Returns:
# func(path) -> object: object will have all the kwargs accessible via object.kwarg
#
# Example:
# statvfs = mock_statvfs(f_blocks=10)
# result = statvfs("regardless/of/path")
# assert result.f_blocks == 10 # True
def mock_statvfs(**kwargs):
def statvfs(path):
return MockAttributeResult(kwargs)
return statvfs
# monkey_patch()
#
# with monkey_patch("statvfs", custom_statvfs):
# assert os.statvfs == custom_statvfs # True
# assert os.statvfs == custom_statvfs # False
#
@contextmanager
def monkey_patch(to_patch, patched_func):
orig = getattr(os, to_patch)
setattr(os, to_patch, patched_func)
try:
yield
finally:
setattr(os, to_patch, orig)
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