Use 'tox' to execute unit tests

Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>

.gitlab-ci.yml

@@ -41,13 +41,15 @@ build3:
     when: always
     paths:
       - dist
-
 test:
   stage: test
+  image: python:2.7
+  before_script:
+    - pip install tox
+    - apt-get update
+    - apt-get install -y ruby-sass
   script:
-    - pip install --no-cache-dir -r requirements/dev.txt
-    - cp env-dist .env
-    - pytest
+    - tox -e deps,pytest
 
 stage:
   stage: deploy

tox.ini

@@ -1,6 +1,7 @@
 [tox]
 envlist =
     flake8
+    pytest
     py27
     py36
 
@@ -12,3 +13,11 @@ commands = flake8 \
     setup.py \
     network \
     auth0login
+
+[testenv:pytest]
+install_command = python -m pip install --no-deps {opts} {packages}
+deps =
+    -rrequirements-dev.txt
+usedevelop = True
+extras = dev
+commands = pytest