Run tox

azure-pipelines.yml

@@ -10,10 +10,13 @@ strategy:
   matrix:
     Python35:
       python.version: '3.5'
+      TOXENV: py35
     Python36:
       python.version: '3.6'
+      TOXENV: py36
     Python37:
       python.version: '3.7'
+      TOXENV: py37
 
 steps:
 - task: UsePythonVersion@0
@@ -27,6 +30,6 @@ steps:
   displayName: 'Install dependencies'
 
 - script: |
-    pip install pytest pytest-azurepipelines
-    pytest
-  displayName: 'pytest'
+    pip install -U tox twine wheel codecov
+    tox
+  displayName: 'Run test suite'

tests/requirements-py3.txt

@@ -6,6 +6,7 @@ pytest < 5.4
 pytest-cov
 pytest-twisted >= 1.11
 pytest-xdist
+pytest-azurepipelines
 sybil
 testfixtures