Made the Connection panel more usable for runtime testing

internal/playback/session_plan.go

@@ -10,6 +10,19 @@ const (
 	TopologySynchronized
 )
 
+func (t SessionTopology) String() string {
+	switch t {
+	case TopologyIdle:
+		return "idle"
+	case TopologyIndependent:
+		return "independent"
+	case TopologySynchronized:
+		return "synchronized"
+	default:
+		return fmt.Sprintf("SessionTopology(%d)", uint8(t))
+	}
+}
+
 type SyncPredicate func(video, audio FeedConfig) bool
 
 type SessionPlan struct {

internal/playback/session_plan_test.go

@@ -5,6 +5,23 @@ import (
 	"testing"
 )
 
+func TestSessionTopologyString(t *testing.T) {
+	tests := []struct {
+		topology SessionTopology
+		want     string
+	}{
+		{TopologyIdle, "idle"},
+		{TopologyIndependent, "independent"},
+		{TopologySynchronized, "synchronized"},
+		{SessionTopology(99), "SessionTopology(99)"},
+	}
+	for _, tt := range tests {
+		if got := tt.topology.String(); got != tt.want {
+			t.Errorf("%d.String() = %q, want %q", tt.topology, got, tt.want)
+		}
+	}
+}
+
 func TestBuildSessionPlan(t *testing.T) {
 	base := validCommandSession()
 	stoppedVideo := stoppedFeed(base.Video)