Create test.yml

.github/workflows/test.yml

@@ -0,0 +1,21 @@
+name: Master
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: Borales/actions-yarn@v2.3.0
+    - with: 
+        cmd: install
+    - with: 
+        cmd: test  
+    - if: github.event_name == 'push' && github.ref == 'master' && success()
+      with: 
+        cmd: coverage