add: test github actions

.github/workflows/test.yml

@@ -0,0 +1,17 @@
+on:
+  push:
+  pull_request:
+
+name: Test
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-go@v2
+        with:
+          go-version: "1.18"
+
+      - name: Test
+        run: go test -v -coverprofile='coverage.out' -covermode=count ./...