feat: add yutong mqtt ingestion

go/vehicle-gateway/internal/protocol/yutongmqtt/parser_test.go

@@ -0,0 +1,83 @@
+package yutongmqtt
+
+import (
+	"errors"
+	"testing"
+
+	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
+)
+
+func TestParseMessageMapsYutongPayloadToEnvelope(t *testing.T) {
+	payload := []byte(`{
+	  "device": "LTEST000000000001",
+	  "time": "20260413100000",
+	  "plateNo": "豫A12345",
+	  "data": {
+	    "METER_SPEED": 52.3,
+	    "TOTAL_MILEAGE": 123456.7,
+	    "BATTERY_CAPACITY_SOC": 70,
+	    "LONGITUDE": 116397128,
+	    "LATITUDE": 39916527,
+	    "GPSDirection": 88
+	  }
+	}`)
+
+	env, err := ParseMessage("endpoint-a", "/ytforward/shln/dev1", payload, 1782745114999)
+	if err != nil {
+		t.Fatalf("ParseMessage() error = %v", err)
+	}
+	if env.Protocol != envelope.ProtocolYutongMQTT {
+		t.Fatalf("protocol = %q", env.Protocol)
+	}
+	if env.VIN != "LTEST000000000001" || env.DeviceID != "LTEST000000000001" {
+		t.Fatalf("identity fields = vin:%q device:%q", env.VIN, env.DeviceID)
+	}
+	if env.Plate != "豫A12345" {
+		t.Fatalf("plate = %q", env.Plate)
+	}
+	assertFloatField(t, env, envelope.FieldSpeedKMH, 52.3)
+	assertFloatField(t, env, envelope.FieldTotalMileageKM, 123456.7)
+	assertFloatField(t, env, envelope.FieldSOCPercent, 70)
+	assertFloatField(t, env, envelope.FieldLongitude, 116.397128)
+	assertFloatField(t, env, envelope.FieldLatitude, 39.916527)
+	assertFloatField(t, env, "direction_deg", 88)
+	if env.EventTimeMS == 1782745114999 {
+		t.Fatal("event time should come from device time")
+	}
+	if env.RawText == "" || env.Parsed["data"] == nil {
+		t.Fatalf("raw/parsed missing: %#v", env)
+	}
+}
+
+func TestParseMessageUsesDeviceAsVehicleKeyWhenNotVIN(t *testing.T) {
+	payload := []byte(`{"device":"YT-DEVICE-001","time":"20260413100000","data":{"METER_SPEED":"12.3"}}`)
+	env, err := ParseMessage("endpoint-a", "/ytforward/shln/YT-DEVICE-001", payload, 1782745114999)
+	if err != nil {
+		t.Fatalf("ParseMessage() error = %v", err)
+	}
+	if env.VIN != "" {
+		t.Fatalf("non-vin device should not be treated as vin: %q", env.VIN)
+	}
+	if env.VehicleKey() != "YT-DEVICE-001" {
+		t.Fatalf("vehicle key = %q", env.VehicleKey())
+	}
+	assertFloatField(t, env, envelope.FieldSpeedKMH, 12.3)
+}
+
+func TestParseMessageRejectsMalformedJSON(t *testing.T) {
+	_, err := ParseMessage("endpoint-a", "/bad", []byte("{bad-json"), 1782745114999)
+	if !errors.Is(err, ErrInvalidJSON) {
+		t.Fatalf("error = %v", err)
+	}
+}
+
+func assertFloatField(t *testing.T, env envelope.FrameEnvelope, key string, want float64) {
+	t.Helper()
+	got, ok := env.Fields[key].(float64)
+	if !ok {
+		t.Fatalf("field %s missing or not float64: %#v", key, env.Fields[key])
+	}
+	if got != want {
+		t.Fatalf("field %s = %v, want %v", key, got, want)
+	}
+}