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# The ASF licenses this file to You under the Apache License, Version 2.0
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# http://www.apache.org/licenses/LICENSE-2.0
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[docs]def mock_get_ipython():
"""Mock an ipython environment w/o setting up real ipython kernel.
Each entering of get_ipython() invocation will have the prompt increased by
one. Grouping arbitrary python code into separate cells using `with` clause.
Examples::
# Usage, before each test function, prepend:
@patch('IPython.get_ipython', new_callable=mock_get_ipython)
# In the test function's signature, add an argument for the patch, e.g.:
def some_test(self, cell):
# Group lines of code into a cell using the argument:
with cell:
# arbitrary python code
# ...
# arbitrary python code
# Next cell with prompt increased by one:
with cell: # Auto-incremental
# arbitrary python code
# ...
# arbitrary python code
"""
class MockedGetIpython(object):
def __init__(self):
self._execution_count = 0
# Mock as if the kernel is connected to a notebook frontend.
self.config = {'IPKernelApp': 'mock'}
def __call__(self):
return self
@property
def execution_count(self):
"""Execution count always starts from 1 and is constant within a cell."""
return self._execution_count
def __enter__(self):
"""Marks entering of a cell/prompt."""
self._execution_count = self._execution_count + 1
def __exit__(self, exc_type, exc_value, traceback):
"""Marks exiting of a cell/prompt."""
pass
return MockedGetIpython()