Add (some) tests to the cli tool (#22)

* Add tests to the cli tool

* add pytest-mock

* do not ignore cli.py for coverage

* read requirements_test.txt instead of redefining reqs in tox.ini

* Add upload to codecov, first try!

* fix name of the result file

* no need to manually publish to azure devops..

tox.ini

@@ -8,13 +8,7 @@ skip_missing_interpreters = True
 
 [testenv]
 passenv = TRAVIS TRAVIS_JOB_ID TRAVIS_BRANCH
-deps=
-  pytest
-  pytest-cov
-  voluptuous
-  typing
-  flake8
-  pytest-asyncio
+deps = -r{toxinidir}/requirements_test.txt
 commands=
     py.test --cov --cov-config=tox.ini kasa
 
@@ -49,7 +43,6 @@ commands = pre-commit run --all-files
 source = kasa
 branch = True
 omit =
-  kasa/cli.py
   kasa/tests/*
 
 [coverage:report]