补充实现细节

pkg/core/backend_test.go

@@ -0,0 +1,14 @@
+package core
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAny(t *testing.T) {
+	data := make(map[string]string)
+	err := json.Unmarshal([]byte(`{}`), &data)
+	require.NoError(t, err)
+}