Feat: works on my machine

test.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"gitea.konchin.com/ytshih/inp2025/utils"
+	"github.com/spf13/cobra"
+)
+
+var testCmd = &cobra.Command{
+	Use: "test",
+}
+
+var testServerCmd = &cobra.Command{
+	Use: "server",
+	Run: func(cmd *cobra.Command, args []string) {
+		dataCh := make(chan string)
+		_, shutdown, err := utils.ListenUDPData(18787, dataCh)
+		if err != nil {
+			panic(err)
+		}
+		defer shutdown()
+		<-dataCh
+	},
+}
+
+var testClientCmd = &cobra.Command{
+	Use: "client",
+	Run: func(cmd *cobra.Command, args []string) {
+		err := utils.Ping("localhost:18787")
+		if err != nil {
+			panic(err)
+		}
+	},
+}
+
+func init() {
+	testCmd.AddCommand(testServerCmd)
+	testCmd.AddCommand(testClientCmd)
+}