add unittests

.github/workflows/go.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.15
+        go-version: 1.16
 
     - name: Build
       run: go build -v ./...

.github/workflows/release.yml

@@ -22,6 +22,9 @@ jobs:
         uses: actions/setup-go@v2
         with:
           go-version: 1.16
+      - 
+        name: Test
+        run: go test -v ./...
       -
         name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2