@@ -4,10 +4,11 @@ on: [push]

 jobs:

     test:

-        runs-on: ubuntu-latest

+        runs-on: ${{ matrix.os }}

         strategy:

             max-parallel: 4

             matrix:

+                os: [ubuntu-latest, macos-latest, windows-latest]

                 python-version: [3.6, 3.7]

         steps:

             - uses: actions/checkout@v1

@@ -28,6 +29,7 @@ jobs:

             - name: Test

               run: tox

             - name: Upload coverage

+              if: matrix.os == 'ubuntu-latest'

               uses: codecov/codecov-action@v1.0.3

               with:

                 token: ${{secrets.CODECOV_TOKEN}}