Test on macos

Author: dstansby

.github/workflows/test_and_deploy.yml

@@ -1,6 +1,3 @@
-# This workflows will upload a Python Package using Twine when a release is created
-# For more information see: https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries
-
 name: tests
 
 on:
@@ -20,7 +17,7 @@ jobs:
     runs-on: ${{ matrix.platform }}
     strategy:
       matrix:
-        platform: [ubuntu-latest]
+        platform: [ubuntu-latest, macos-latest]
         python-version: ['3.8', '3.9', '3.10']
 
     steps: