swarm/network: unskip tests previously skipped due to suggestPeer issues (#18477)

swarm/network/simulation/kademlia_test.go

@@ -28,8 +28,6 @@ import (
 )
 
 func TestWaitTillHealthy(t *testing.T) {
-	t.Skip("WaitTillHealthy depends on discovery, which relies on a reliable SuggestPeer, which is not reliable")
-
 	sim := New(map[string]ServiceFunc{
 		"bzz": func(ctx *adapters.ServiceContext, b *sync.Map) (node.Service, func(), error) {
 			addr := network.NewAddr(ctx.Config.Node())

swarm/network/simulations/overlay_test.go

@@ -43,7 +43,6 @@ var (
 //It also provides a documentation on the steps needed by frontends
 //to use the simulations
 func TestOverlaySim(t *testing.T) {
-	t.Skip("Test is flaky, see: https://github.com/ethersphere/go-ethereum/issues/592")
 	//start the simulation
 	log.Info("Start simulation backend")
 	//get the simulation networ; needed to subscribe for up events

swarm/network/stream/visualized_snapshot_sync_sim_test.go

@@ -154,8 +154,6 @@ func sendSimTerminatedEvent(sim *simulation.Simulation) {
 //It also sends some custom events so that the frontend
 //can visualize messages like SendOfferedMsg, WantedHashesMsg, DeliveryMsg
 func TestSnapshotSyncWithServer(t *testing.T) {
-	//t.Skip("temporarily disabled as simulations.WaitTillHealthy cannot be trusted")
-
 	//define a wrapper object to be able to pass around data
 	wrapper := &netWrapper{}