Add test GitHub action.

.github/workflows/test.yml

@@ -0,0 +1,26 @@
+name: Android CI
+
+on:
+  push:
+    branches: [ "xxx" ]
+  pull_request:
+    branches: [ "xxx" ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set env
+        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+      - name: Test
+        run: |
+          echo $RELEASE_VERSION
+          echo ${{ env.RELEASE_VERSION }}