Add matrix
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index afdd881..61c2baf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,14 @@
         npm install
         npm run all
   test: # make sure the action works on a clean machine without building
-    runs-on: ubuntu-latest
+    name: Test on ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+
+    runs-on: ${{ matrix.os }}
+    
     steps:
     - uses: actions/checkout@v1
     - uses: ./