Fix import error

Fix import error:

import file mismatch:
imported module 'test_mas' has this __file__ attribute:
  /home/runner/work/python-devops/python-devops/test/src/test_mas.py
which is not the same as the test file we want to collect:
  /home/runner/work/python-devops/python-devops/test/unit/test_mas.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules

Author: durera

Makefile

@@ -19,7 +19,7 @@ build: venv
 # package which is linked to the files you are editing so there is no need to
 # re-install after each change.
 unit-test:
-	. venv/bin/activate && pytest test/unit
+	. venv/bin/activate && pytest test/src/mock
 
 lint: venv
 	rm -f README.rst