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A helper mocking function to mask ImportErrors

Project description

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A helper mocking function to mask ImportError s on a scoped code. Failed imports will be ignored, unless specified by the do_not_mock argument.

Installation

Using pip: pip install mock-import

Usage

Import:
>>> from mock_import import mock_import
Mocking import for a code block:
>>> with mock_import():
...     import no_such_module  # Won't raise ImportError
...     no_such_module.no_such_function()  # Won't raise AttributeError
Mocking import as a decorator:
>>> @mock_import()
... def method():
...     import no_such_module  # Won't raise ImportError
...     no_such_module.no_such_function()  # Won't raise AttributeError
>>>     import no_such_module  # raises ImportError
Making an exception:
>>> with mock_import(do_not_mock='no_such_module'):
...     import no_such_other_module  # Won't raise ImportError
...     import no_such_module  # Will raise ImportError
>>> with mock_import(do_not_mock=['nsm1', 'nsm2']):
...     import nsm  # Won't raise ImportError
...     import nsm1  # Will raise ImportError
...     import nsm2  # Will raise ImportError

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