pyflakes==1.2.3
pytest==2.9.2
pytest-cache==1.0
pytest-cov==2.2.1
pytest-flakes==1.0.1
pytest-pep8==1.0.6
pep8==1.7.0
coverage==4.2
pyflakes==1.2.3
pytest==2.9.2
pytest-cache==1.0
pytest-cov==2.2.1
pytest-flakes==1.0.1
pytest-pep8==1.0.6
pep8==1.7.0
coverage==4.2
mock==2.0.0

Add mock to the testing requirements
Add mock to the testing requirements

It was missing, and without them, tests didn’t run.
