test: Implement db unit tests

.github/workflows/go.yml

@@ -9,6 +9,23 @@ on:
     branches: ["main"]
 
 jobs:
+  test:
+    name: Run tests
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version-file: ./go.mod
+
+      - name: Run tests
+        run: go test -v ./...
+
   build:
     name: Build binaries for Windows, macOS, and Linux
     runs-on: ${{ matrix.os }}