Mockito is a spying framework originally based on the Java library with the same name <https://github.com/mockito/mockito>_.

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Install

pip install mockito

Quick Start

90% use case is that you want to stub out a side effect.

::

from mockito import when, mock, unstub

when(os.path).exists('/foo').thenReturn(True)

# or:
import requests  # the famous library
# you actually want to return a Response-like obj, we'll fake it
response = mock({'status_code': 200, 'text': 'Ok'})
when(requests).get(...).thenReturn(response)

# use it
requests.get('http://google.com/')

# clean up
unstub()

Read the docs

http://mockito-python.readthedocs.io/en/latest/

Run the tests

::

pip install pytest
py.test