WIP on testing on multiple OSes

Author: ncalexan

.github/workflows/check.yml

@@ -32,7 +32,15 @@ jobs:
 
   android_unversioned_tests:
     # The type of runner that the job will run on
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
 
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE for the job.