Reverted 6b2df6d1bf507ed696c025e3722728c6c2e5cfb8, which was based on invalid information. Not to mention Mock.assert_called() only appeared in Python 3.6, so CI broke.
Reverted 6b2df6d1bf507ed696c025e3722728c6c2e5cfb8, which was based on invalid information. Not to mention Mock.assert_called() only appeared in Python 3.6, so CI broke.

CleanCut/green,CleanCut/green