mock_import

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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