github: test workflow

.github/workflows/test.yml

@@ -0,0 +1,25 @@
+name: Go Test
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - '*'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '^1.18'
+
+    - name: Run tests
+      run: make test