Add test test mock starter

pkg/grpc/mock.go

@@ -0,0 +1,52 @@
+package grpc
+
+import (
+	"context"
+	"fmt"
+	"net"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"go.uber.org/fx"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/test/bufconn"
+)
+
+func StartTestGrpcService(lc fx.Lifecycle, server GrpcServer, logger *zerolog.Logger) *grpc.ClientConn {
+	fmt.Println("Starting test gRPC service")
+	buffer := 101024 * 1024
+	lis := bufconn.Listen(buffer)
+
+	baseServer := server.GetGrpcServer()
+	go func() {
+		if err := baseServer.Serve(lis); err != nil {
+			logger.Printf("error serving server: %v", err)
+		}
+	}()
+
+	conn, err := grpc.DialContext(context.Background(), "",
+		grpc.WithContextDialer(func(context.Context, string) (net.Conn, error) {
+			return lis.Dial()
+		}), grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		logger.Printf("error connecting to server: %v", err)
+	}
+
+	closer := func() {
+		err := lis.Close()
+		if err != nil {
+			log.Printf("error closing listener: %v", err)
+		}
+		baseServer.Stop()
+	}
+
+	lc.Append(fx.Hook{
+		OnStop: func(ctx context.Context) error {
+			closer()
+			return nil
+		},
+	})
+
+	return conn
+}