[client,management] Rewrite the SSH feature (#4015)

client/ssh/server/test.go

@@ -0,0 +1,45 @@
+package server
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/netip"
+	"testing"
+	"time"
+)
+
+func StartTestServer(t *testing.T, server *Server) string {
+	started := make(chan string, 1)
+	errChan := make(chan error, 1)
+
+	go func() {
+		ln, err := net.Listen("tcp", "127.0.0.1:0")
+		if err != nil {
+			errChan <- err
+			return
+		}
+		actualAddr := ln.Addr().String()
+		if err := ln.Close(); err != nil {
+			errChan <- fmt.Errorf("close temp listener: %w", err)
+			return
+		}
+
+		addrPort := netip.MustParseAddrPort(actualAddr)
+		if err := server.Start(context.Background(), addrPort); err != nil {
+			errChan <- err
+			return
+		}
+		started <- actualAddr
+	}()
+
+	select {
+	case actualAddr := <-started:
+		return actualAddr
+	case err := <-errChan:
+		t.Fatalf("Server failed to start: %v", err)
+	case <-time.After(5 * time.Second):
+		t.Fatal("Server start timeout")
+	}
+	return ""
+}