Add pypy and pypy3 envs

Author: nicoddemus

azure-pipelines.yml

@@ -5,6 +5,7 @@ trigger:
 variables:
   PYTEST_ADDOPTS: "--junitxml=build/test-results/$(tox.env).xml"
   python.needs_vc: False
+  python.exe: "python"
 
 jobs:
 
@@ -56,6 +57,14 @@ jobs:
       py37-freeze:
         python.version: '3.7'
         tox.env: 'py37-freeze'
+      pypy:
+        python.version: 'pypy'
+        tox.env: 'pypy'
+        python.exe: 'pypy'
+      pypy3:
+        python.version: 'pypy3'
+        tox.env: 'pypy3'
+        python.exe: 'pypy3'
     maxParallel: 10
 
   steps:
@@ -68,10 +77,10 @@ jobs:
     condition: eq(variables['python.needs_vc'], True)
     displayName: 'Install VC for py27'
 
-  - script: python -m pip install --upgrade pip && pip install tox
+  - script: $(python.exe) -m pip install --upgrade pip && pip install tox
     displayName: 'Install tox'
 
-  - script: python -m tox -e $(tox.env)
+  - script: $(python.exe) -m tox -e $(tox.env)
     displayName: 'Run tests'
 
   - task: PublishTestResults@2

tox.ini

@@ -12,6 +12,7 @@ envlist =
     py37
     py38
     pypy
+    pypy3
     {py27,py37}-{pexpect,xdist,trial,numpy,pluggymaster}
     py27-nobyte
     doctesting