feat(go): batch redis fast writer projections

go/vehicle-gateway/internal/realtime/repository_test.go

@@ -430,6 +430,57 @@ func TestRepositoryFastUpdateOnlyWritesPermanentKVAndMinuteOnline(t *testing.T)
 	}
 }
 
+func TestRepositoryFastUpdateBatchWritesMultipleRealtimeProjections(t *testing.T) {
+	repo, closeFn := newTestRepository(t)
+	defer closeFn()
+	ctx := context.Background()
+
+	err := repo.FastUpdateBatch(ctx, []envelope.FrameEnvelope{
+		{
+			Protocol:     envelope.ProtocolGB32960,
+			VIN:          "VIN001",
+			EventTimeMS:  1000,
+			ReceivedAtMS: 1100,
+			Parsed: map[string]any{
+				"data_units": []any{map[string]any{"type": "0x01", "name": "vehicle", "value": map[string]any{"soc_percent": 88.0}}},
+			},
+		},
+		{
+			Protocol:     envelope.ProtocolJT808,
+			VIN:          "VIN002",
+			EventTimeMS:  2000,
+			ReceivedAtMS: 2200,
+			MessageID:    "0x0200",
+			Parsed:       map[string]any{"location": map[string]any{"longitude": 121.1, "latitude": 30.2}},
+			Fields:       map[string]any{envelope.FieldLongitude: 121.1, envelope.FieldLatitude: 30.2},
+		},
+	})
+	if err != nil {
+		t.Fatalf("FastUpdateBatch() error = %v", err)
+	}
+
+	gbValues, err := repo.client.HGetAll(ctx, "vehicle:rt-kv:GB32960:VIN001:values").Result()
+	if err != nil {
+		t.Fatalf("gb values HGetAll error = %v", err)
+	}
+	if gbValues["gb32960.vehicle.soc_percent"] != "88" {
+		t.Fatalf("gb values = %#v", gbValues)
+	}
+	jtValues, err := repo.client.HGetAll(ctx, "vehicle:rt-kv:JT808:VIN002:values").Result()
+	if err != nil {
+		t.Fatalf("jt values HGetAll error = %v", err)
+	}
+	if jtValues["jt808.location.longitude"] != "121.1" || jtValues["jt808.location.latitude"] != "30.2" {
+		t.Fatalf("jt values = %#v", jtValues)
+	}
+	if repo.client.ZScore(ctx, "vehicle:last_seen", "GB32960:VIN001").Err() != nil {
+		t.Fatal("last_seen should contain GB32960 VIN001")
+	}
+	if repo.client.ZScore(ctx, "vehicle:last_seen", "JT808:VIN002").Err() != nil {
+		t.Fatal("last_seen should contain JT808 VIN002")
+	}
+}
+
 func TestRepositoryListsOnlineStatusesAndPipelineSummary(t *testing.T) {
 	repo, closeFn := newTestRepository(t)
 	defer closeFn()