feat: build vehicle data platform and production pipeline

go/vehicle-gateway/internal/eventbus/kafka_sink_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"reflect"
+	"strings"
 	"testing"
 
 	"github.com/segmentio/kafka-go"
@@ -112,6 +113,49 @@ func TestNewKafkaSinkUsesProductionDeliveryGuarantees(t *testing.T) {
 	}
 }
 
+func TestValidateKafkaConfigRejectsRawFieldsTopicOverlap(t *testing.T) {
+	err := ValidateKafkaConfig(KafkaConfig{
+		RawTopics: map[envelope.Protocol]string{
+			envelope.ProtocolJT808: "vehicle.raw.go.jt808.v1",
+		},
+		FieldsTopics: map[envelope.Protocol]string{
+			envelope.ProtocolJT808: "vehicle.raw.go.jt808.v1",
+		},
+	})
+	if err == nil {
+		t.Fatal("ValidateKafkaConfig() error = nil, want overlap rejection")
+	}
+	if !strings.Contains(err.Error(), "fields kafka topic") {
+		t.Fatalf("error = %q, want fields topic family hint", err)
+	}
+}
+
+func TestValidateKafkaConfigRejectsKnownProtocolTopicMismatch(t *testing.T) {
+	err := ValidateKafkaConfig(KafkaConfig{
+		RawTopics: map[envelope.Protocol]string{
+			envelope.ProtocolJT808: "vehicle.raw.go.gb32960.v1",
+		},
+	})
+	if err == nil {
+		t.Fatal("ValidateKafkaConfig() error = nil, want raw protocol mismatch")
+	}
+	if !strings.Contains(err.Error(), "must match protocol") {
+		t.Fatalf("error = %q, want protocol mismatch hint", err)
+	}
+
+	err = ValidateKafkaConfig(KafkaConfig{
+		FieldsTopics: map[envelope.Protocol]string{
+			envelope.ProtocolYutongMQTT: "vehicle.fields.go.jt808.v1",
+		},
+	})
+	if err == nil {
+		t.Fatal("ValidateKafkaConfig() error = nil, want fields protocol mismatch")
+	}
+	if !strings.Contains(err.Error(), "must match protocol") {
+		t.Fatalf("error = %q, want protocol mismatch hint", err)
+	}
+}
+
 type recordingWriter struct {
 	messages   []kafka.Message
 	writeCalls int