feat: scaffold go vehicle gateway core

go/vehicle-gateway/internal/envelope/envelope_test.go

@@ -0,0 +1,55 @@
+package envelope
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+func TestFrameEnvelopeVehicleKeyPrefersVIN(t *testing.T) {
+	e := FrameEnvelope{Protocol: ProtocolJT808, VIN: "LNBVIN00000000001", Phone: "013307795425"}
+	if got := e.VehicleKey(); got != "LNBVIN00000000001" {
+		t.Fatalf("VehicleKey() = %q", got)
+	}
+}
+
+func TestFrameEnvelopeVehicleKeyFallsBackToPhone(t *testing.T) {
+	e := FrameEnvelope{Protocol: ProtocolJT808, Phone: "013307795425"}
+	if got := e.VehicleKey(); got != "JT808:013307795425" {
+		t.Fatalf("VehicleKey() = %q", got)
+	}
+}
+
+func TestFrameEnvelopeEventIDStable(t *testing.T) {
+	e := FrameEnvelope{
+		Protocol:     ProtocolJT808,
+		MessageID:    "0x0200",
+		Phone:        "013307795425",
+		Sequence:     1,
+		EventTimeMS:  1782745114000,
+		ReceivedAtMS: 1782745114999,
+		RawHex:       "7e02000000ff7e",
+	}
+	a := e.StableEventID()
+	b := e.StableEventID()
+	if a == "" || a != b {
+		t.Fatalf("event id must be non-empty and stable: %q %q", a, b)
+	}
+}
+
+func TestFrameEnvelopeMarshalDefaults(t *testing.T) {
+	e := FrameEnvelope{Protocol: ProtocolGB32960, VIN: "LNBVIN00000000002", MessageID: "0x02"}
+	payload, err := e.MarshalJSONBytes()
+	if err != nil {
+		t.Fatalf("MarshalJSONBytes() error = %v", err)
+	}
+	var decoded FrameEnvelope
+	if err := json.Unmarshal(payload, &decoded); err != nil {
+		t.Fatalf("json.Unmarshal() error = %v", err)
+	}
+	if decoded.EventID == "" {
+		t.Fatal("event id should be filled")
+	}
+	if decoded.ParseStatus != ParseOK {
+		t.Fatalf("parse status = %q", decoded.ParseStatus)
+	}
+}