Test with pytest

.github/workflows/test.yml

@@ -44,10 +44,10 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade six
+          python -m pip install --upgrade pytest six
           python -m pip install .
 
       - name: Tests
         shell: bash
         run: |
-          python tests/tests.py
+          pytest

.travis.yml

@@ -17,10 +17,10 @@ jobs:
 
 install:
   - pip install -U pip
-  - pip install -U six
+  - pip install -U pytest six
   - pip install .
 
-script: python tests/tests.py
+script: pytest
 
 deploy:
   - provider: pypi