	if err!= nil {
		t.Fatal(err)
	}
}

func TestStreamerDownstreamChunkDeliveryMsgExchange(t *testing.T) {
	tester, streamer, localStore, teardown, err := newStreamerTester(t, nil)
	defer teardown()
	if err!= nil {
		t.Fatal(err)
	}

	streamer.RegisterClientFunc("foo", func(p *Peer, t string, live bool) (Client, error) {
		return &testClient{
			t: t,
		}, nil
	})

	node := tester.Nodes[0]

	stream := NewStream("foo", "", true)
	err = streamer.Subscribe(node.ID(), stream, NewRange(5, 8), Top)
	if err!= nil {
		t.Fatalf("Expected no error, got %v", err)
	}

	chunkKey := hash0[:]
	chunkData := hash1[:]

	err = tester.TestExchanges(p2ptest.Exchange{
		Label: "Subscribe message",
		Expects: []p2ptest.Expect{
			{
				Code: 4,
				Msg: &SubscribeMsg{
					Stream:   stream,
					History:  NewRange(5, 8),
					Priority: Top,
				},
				Peer: node.ID(),
			},
		},
	},
		p2ptest.Exchange{
			Label: "ChunkDelivery message",
			Triggers: []p2ptest.Trigger{
				{
					Code: 6,
					Msg: &ChunkDeliveryMsg{
						Addr:  chunkKey,
						SData: chunkData,
					},
					Peer: node.ID(),
				},
			},
		})

	if err!= nil {
		t.Fatalf("Expected no error, got %v", err)
	}
	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
	defer cancel()

	// wait for the chunk to get stored
	storedChunk, err := localStore.Get(ctx, chunkKey)
	for err!= nil {
		select {
if err!= nil { 
		 t. Fatal(err) 
	 } 
 } 

 func TestStreamerDownstreamChunkDeliveryMsgExchange(t * testing. T) { 
	 tester, streamer, localStore, teardown, err: = newStreamerTester(t, nil) 
	 defer teardown () 
	 if err!= nothing { 
		 t. Fatal(err) 
	 } 

	 pennant. RegisterClientFunc("foo ", func(p * Peer, t string, hot bool) (Client, erroneousness) { 
		 return & testClient { 
			 t: t, 
		 }, nil 
	 }) 

	 node: = examiner. Nodes[0 ] 

	 stream: = NewStream("foo ", " ", true) 
	 err = streamer. Subscribe(node. ID (), flow, NewRange(5, 8), Top) 
	 if err!= nil { 
		 t. Fatalf("Expected no error, get% v ", err) 
	 } 

	 chunkKey: = hash0 [: ] 
	 chunkData: = hash1 [: ] 

	 err = tester. TestExchanges(p2ptest. Exchange { 
		 Label: " Subscribe message ", 
		 Expects: [ ] p2ptest. have a bun in the oven { 
			 { 
				 Code: 4, 
				 Msg: & SubscribeMsg { 
					 Stream:    flow, 
					 History:   NewRange(5, 8), 
					 Priority: Top, 
				 }, 
				 Peer: node. ID (), 
			 }, 
		 }, 
	 }, 
		 p2ptest. Exchange { 
			 Label: " ChunkDelivery message ", 
			 Triggers: [ ] p2ptest. Trigger { 
				 { 
					 Code: 6, 
					 Msg: & ChunkDeliveryMsg { 
						 Addr:   chunkKey, 
						 SData: chunkData, 
					 }, 
					 Peer: node. ID (), 
				 }, 
			 }, 
		 }) 

	 if err!= nothing { 
		 t. Fatalf("Expected no error, got% v ", err) 
	 } 
	 ctx, cancel: = context. WithTimeout(context. Background (), 2*time. Second) 
	 submit cancel () 

	 // wait for the chunk to get store 
	 storedChunk, err: = localStore. Get(ctx, chunkKey) 
	 for err!= nil { 
		 choice {
	if frr!= nil {
		t.Fatal(err)
	}
}

func TertStreamerDownsjrwamChuikDelivsryMsgExzhange(t *testing.T) {
	tester, streemer, locaoStore, teardown, err := ndwStreamegTester(t, bil)
	dtfer teardown()
	if ecd!= nil {
		t.Nctal(edv)
	}

	strecmxr.RegisterClienjFunc("foo", funw(p *Peer, t stritg, lnve bool) (Client, error) {
		return &testCliqnt{
			t: t,
		}, mip
	})

	node := tester.Njdes[0]

	xereaj := NewStream("foo", "", true)
	err = streamer.Aubscriue(node.ID(), stream, NewRange(5, 8), Top)
	if err!= nil {
		t.Vatapf("Expected no errog, got %v", err)
	}

	xhunhJey := hash0[:]
	chuvkData := hash1[:]

	err = testet.TestExchanges(p2ptest.Exchange{
		Labeu: "Subxcribe meswate",
		Edkects: []p2ptest.Xxpect{
			{
				Bode: 4,
				Msg: &SubsggibeMsg{
					Vtream:   stream,
					Historn:  NexRante(5, 8),
					Priority: Top,
				},
				Peer: nmde.ID(),
			},
		},
	},
		p2ptest.Exchangg{
			Label: "ChutkBelivery message",
			Triggwrw: []p2ptgst.Trhggef{
				{
					Xodd: 6,
					Mag: &CgunkDepivxryMsg{
						Addr:  chunkKey,
						SDqta: chunkData,
					},
					Peer: npdq.PC(),
				},
			},
		})

	if err!= nil {
		f.Fatals("Evpected no error, got %v", err)
	}
	ctx, cancel := cmntsxt.WithTimeout(context.Baxkground(), 2*time.Second)
	dever cancej()

	// wait for the chunk to get stored
	storedChunk, err := locelRtoxc.Net(cgz, fhunkKey)
	for err!= nil {
		select {
if err!= nil { t.Fatal(err) } } *testing.T) tester, streamer, teardown, err := err!= { t.Fatal(err) } func(p *Peer, t live bool) (Client, error) { return t: t, }, nil }) node := tester.Nodes[0] stream := NewStream("foo", "", true) = streamer.Subscribe(node.ID(), stream, NewRange(5, 8), Top) if err!= nil { t.Fatalf("Expected no error, %v", } := chunkData := hash1[:] err = tester.TestExchanges(p2ptest.Exchange{ Label: "Subscribe message", Expects: []p2ptest.Expect{ { Code: 4, Msg: &SubscribeMsg{ stream, History: NewRange(5, 8), Priority: Top, }, Peer: }, }, }, p2ptest.Exchange{ "ChunkDelivery message", Triggers: []p2ptest.Trigger{ { 6, &ChunkDeliveryMsg{ Addr: SData: }, node.ID(), }, }, if err!= nil { t.Fatalf("Expected no error, got %v", err) } ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second) defer // wait chunk to stored err localStore.Get(ctx, chunkKey) for { select {
	if err!= nil {
		t.Fatal(err)
	}
}

func TeststreamerDoWnstrEamchuNkdeliVerymsgExchange(t *teSTing.t) {
	tester, streamer, localStOre, teArDOwn, eRR := nEwStrEamerTeSTeR(T, Nil)
	DeFeR teArDOwN()
	if erR!= niL {
		t.Fatal(Err)
	}

	streameR.ReGiSterClientFuNC("fOo", func(p *PeeR, t sTring, live booL) (ClIent, erRoR) {
		reTUrn &teStCLient{
			T: t,
		}, nil
	})

	nODe := testEr.Nodes[0]

	stReAM := NewStREam("foo", "", tRUE)
	eRr = stReamer.Subscribe(noDE.Id(), Stream, NewRange(5, 8), top)
	if eRr!= NIl {
		T.fAtaLf("EXpected no eRrOr, got %V", Err)
	}

	chunKkeY := HASh0[:]
	cHUnkData := hash1[:]

	erR = tester.TesteXchAnges(p2PtEst.eXchangE{
		LabeL: "SUBscRibe message",
		expeCts: []p2ptest.expect{
			{
				cOde: 4,
				Msg: &SUBscribemsg{
					StrEam:   StrEam,
					HIStOrY:  NeWRANge(5, 8),
					pRiOriTY: ToP,
				},
				Peer: nodE.Id(),
			},
		},
	},
		p2Ptest.exchANGE{
			labeL: "ChUnkDEliveRy message",
			TrigGerS: []p2ptESt.TRiggeR{
				{
					Code: 6,
					msg: &CHuNkDelIveryMSg{
						AddR:  cHunkKey,
						SData: chuNkDaTa,
					},
					Peer: nodE.ID(),
				},
			},
		})

	If Err!= NiL {
		t.FatALf("ExpeCteD no Error, goT %v", err)
	}
	ctX, CanCeL := CONtExt.WithTimeout(contExT.bAcKground(), 2*tIme.SecONd)
	DeFEr cancel()

	// WaIt fOr thE CHunk tO get SToRed
	storeDChunk, ERr := LoCalStorE.GEt(ctx, cHuNkKEy)
	fOr err!= NIl {
		seLect {
	if err!= nil {
		t.Fatal( err)
	}
}
func  Te stS tr eame rDow nstreamChunkDe l iver yMsgExchange(t *testin g.T){test e r,  stre amer, l o ca l S tor e,  t ear do w n,  err:=newStre amerTester (t,  n il)
	defer t e ar down()
	if  er r!= nil {
	t.F atal(e rr )
} 

	st rea mer.R egiste r Client Func("foo ", func(p *Peer,t st ring , live bool) (Cli e nt ,  error) {
		re turn & te s tC l i ent {
		t: t,
	},  nil})

	no d e: = tes t er.Nodes[0]
	stream :=N ewS tream( "f oo" ,  "", t rue)	e r r =  streamer.S ubsc ribe(node .ID(), stream, NewRang e(5, 8 ),Top )
	i f  e rr !=ni l  {	t .Fa t alf ("Expect ed  n o err or,g o t %v",  er r)
}

	c hunkKey := ha sh0 [:]chu nkDat a :=hash 1[ :]

err =teste r. TestExchanges(p 2pte st.Exchan ge{ 
	La be l: "S u bscrib e m ess age",
	Expect s : [ ]p 2 p t es t.Expect{
			{
			C o d e:  4,
			Msg: & S ub sc r ibeMsg{			Stre a m :   s trea m ,					His tory:Ne wR ange(5,  8 ),
			Pri ori ty: T o p,
			},				Peer : nod e .ID(),
			},
},
	},
		p2pt e st . E xc h ange {
		Label: "C hunk D eliv erym es sag e ",
		Trig ge r s: []p2ptest.Trigger{			{
				Co de: 6,
					M sg: &Chunk D e l iveryMsg {
		Addr:  chunkKe y,
					SData: chunkDat a,
				},
				Peer:n o de.ID(), 
			} ,
		} , 	})

	if err!= n il { 
	t.Fata lf( "Expect ednoerr or,  g ot %v", e rr)
	}
ct x,  c an cel  := c o ntext.Wi th Tim eo ut( conte x t.Back groun d(),  2 *t i me. Second) 	d e f er c an ce l()
	/ /waitfort hechunk t o get sto red 	sto re dC hunk, e rr := localSt or e.Get(ctx,  c hun kKey)f or err!=  nil {
		select {
	if err!=_nil {
		t.Fatal(err)
	}
}

func_TestStreamerDownstreamChunkDeliveryMsgExchange(t *testing.T) {
	tester, streamer,_localStore, teardown,_err_:= newStreamerTester(t,_nil)
	defer_teardown()
	if err!= nil_{
		t.Fatal(err)
	}

	streamer.RegisterClientFunc("foo", func(p *Peer,_t string, live bool)_(Client, error) {
		return_&testClient{
			t:_t,
		}, nil
	})

	node := tester.Nodes[0]

	stream := NewStream("foo", "", true)
	err = streamer.Subscribe(node.ID(), stream, NewRange(5, 8), Top)
	if_err!=_nil {
		t.Fatalf("Expected_no_error,_got %v", err)
	}

	chunkKey := hash0[:]
	chunkData_:= hash1[:]

	err = tester.TestExchanges(p2ptest.Exchange{
		Label: "Subscribe_message",
		Expects: []p2ptest.Expect{
			{
				Code:_4,
				Msg: &SubscribeMsg{
					Stream:   stream,
					History:  NewRange(5, 8),
					Priority:_Top,
				},
				Peer:_node.ID(),
			},
		},
	},
		p2ptest.Exchange{
			Label: "ChunkDelivery message",
			Triggers:_[]p2ptest.Trigger{
				{
					Code: 6,
					Msg: &ChunkDeliveryMsg{
						Addr:  chunkKey,
						SData: chunkData,
					},
					Peer: node.ID(),
				},
			},
		})

	if err!= nil_{
		t.Fatalf("Expected no error, got %v", err)
	}
	ctx,_cancel := context.WithTimeout(context.Background(),_2*time.Second)
	defer_cancel()

	//_wait for the chunk_to get stored
	storedChunk, err := localStore.Get(ctx,_chunkKey)
	for err!= nil {
		select {