diff --git a/itests/paych_api_test.go b/itests/paych_api_test.go
index 900b3d092..3639d7b71 100644
--- a/itests/paych_api_test.go
+++ b/itests/paych_api_test.go
@@ -2,13 +2,13 @@ package itests
 
 import (
 	"context"
-	"fmt"
 	"testing"
 	"time"
 
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
 	"github.com/ipfs/go-cid"
+	"github.com/stretchr/testify/require"
 
 	"github.com/filecoin-project/go-address"
 	cbor "github.com/ipfs/go-ipld-cbor"
@@ -50,36 +50,26 @@ func TestPaymentChannelsAPI(t *testing.T) {
 
 	// send some funds to register the receiver
 	receiverAddr, err := paymentReceiver.WalletNew(ctx, types.KTSecp256k1)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	kit2.SendFunds(ctx, t, paymentCreator, receiverAddr, abi.NewTokenAmount(1e18))
 
 	// setup the payment channel
 	createrAddr, err := paymentCreator.WalletDefaultAddress(ctx)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	channelAmt := int64(7000)
 	channelInfo, err := paymentCreator.PaychGet(ctx, createrAddr, receiverAddr, abi.NewTokenAmount(channelAmt))
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	channel, err := paymentCreator.PaychGetWaitReady(ctx, channelInfo.WaitSentinel)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	// allocate three lanes
 	var lanes []uint64
 	for i := 0; i < 3; i++ {
 		lane, err := paymentCreator.PaychAllocateLane(ctx, channel)
-		if err != nil {
-			t.Fatal(err)
-		}
+		require.NoError(t, err)
 		lanes = append(lanes, lane)
 	}
 
@@ -88,45 +78,28 @@ func TestPaymentChannelsAPI(t *testing.T) {
 	// supersedes the voucher with a value of 1000
 	for _, lane := range lanes {
 		vouch1, err := paymentCreator.PaychVoucherCreate(ctx, channel, abi.NewTokenAmount(1000), lane)
-		if err != nil {
-			t.Fatal(err)
-		}
-		if vouch1.Voucher == nil {
-			t.Fatal(fmt.Errorf("Not enough funds to create voucher: missing %d", vouch1.Shortfall))
-		}
+		require.NoError(t, err)
+		require.NotNil(t, vouch1.Voucher, "Not enough funds to create voucher: missing %d", vouch1.Shortfall)
+
 		vouch2, err := paymentCreator.PaychVoucherCreate(ctx, channel, abi.NewTokenAmount(2000), lane)
-		if err != nil {
-			t.Fatal(err)
-		}
-		if vouch2.Voucher == nil {
-			t.Fatal(fmt.Errorf("Not enough funds to create voucher: missing %d", vouch2.Shortfall))
-		}
+		require.NoError(t, err)
+		require.NotNil(t, vouch2.Voucher, "Not enough funds to create voucher: missing %d", vouch2.Shortfall)
+
 		delta1, err := paymentReceiver.PaychVoucherAdd(ctx, channel, vouch1.Voucher, nil, abi.NewTokenAmount(1000))
-		if err != nil {
-			t.Fatal(err)
-		}
-		if !delta1.Equals(abi.NewTokenAmount(1000)) {
-			t.Fatal("voucher didn't have the right amount")
-		}
+		require.NoError(t, err)
+		require.EqualValues(t, abi.NewTokenAmount(1000), delta1, "voucher didn't have the right amount")
+
 		delta2, err := paymentReceiver.PaychVoucherAdd(ctx, channel, vouch2.Voucher, nil, abi.NewTokenAmount(1000))
-		if err != nil {
-			t.Fatal(err)
-		}
-		if !delta2.Equals(abi.NewTokenAmount(1000)) {
-			t.Fatal("voucher didn't have the right amount")
-		}
+		require.NoError(t, err)
+		require.EqualValues(t, abi.NewTokenAmount(1000), delta2, "voucher didn't have the right amount")
 	}
 
 	// settle the payment channel
 	settleMsgCid, err := paymentCreator.PaychSettle(ctx, channel)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	res := waitForMessage(ctx, t, paymentCreator, settleMsgCid, time.Second*10, "settle")
-	if res.Receipt.ExitCode != 0 {
-		t.Fatal("Unable to settle payment channel")
-	}
+	require.EqualValues(t, 0, res.Receipt.ExitCode, "Unable to settle payment channel")
 
 	creatorStore := adt.WrapStore(ctx, cbor.NewCborStore(blockstore.NewAPIBlockstore(paymentCreator)))
 
@@ -163,9 +136,7 @@ func TestPaymentChannelsAPI(t *testing.T) {
 	}, int(build.MessageConfidence)+1, build.Finality, func(oldTs, newTs *types.TipSet) (bool, events.StateChange, error) {
 		return preds.OnPaymentChannelActorChanged(channel, preds.OnToSendAmountChanges())(ctx, oldTs.Key(), newTs.Key())
 	})
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	select {
 	case <-finished:
@@ -175,75 +146,49 @@ func TestPaymentChannelsAPI(t *testing.T) {
 
 	// Create a new voucher now that some vouchers have already been submitted
 	vouchRes, err := paymentCreator.PaychVoucherCreate(ctx, channel, abi.NewTokenAmount(1000), 3)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if vouchRes.Voucher == nil {
-		t.Fatal(fmt.Errorf("Not enough funds to create voucher: missing %d", vouchRes.Shortfall))
-	}
+	require.NoError(t, err)
+	require.NotNil(t, vouchRes.Voucher, "Not enough funds to create voucher: missing %d", vouchRes.Shortfall)
+
 	vdelta, err := paymentReceiver.PaychVoucherAdd(ctx, channel, vouchRes.Voucher, nil, abi.NewTokenAmount(1000))
-	if err != nil {
-		t.Fatal(err)
-	}
-	if !vdelta.Equals(abi.NewTokenAmount(1000)) {
-		t.Fatal("voucher didn't have the right amount")
-	}
+	require.NoError(t, err)
+	require.EqualValues(t, abi.NewTokenAmount(1000), vdelta, "voucher didn't have the right amount")
 
 	// Create a new voucher whose value would exceed the channel balance
 	excessAmt := abi.NewTokenAmount(1000)
 	vouchRes, err = paymentCreator.PaychVoucherCreate(ctx, channel, excessAmt, 4)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if vouchRes.Voucher != nil {
-		t.Fatal("Expected not to be able to create voucher whose value would exceed channel balance")
-	}
-	if !vouchRes.Shortfall.Equals(excessAmt) {
-		t.Fatal(fmt.Errorf("Expected voucher shortfall of %d, got %d", excessAmt, vouchRes.Shortfall))
-	}
+	require.NoError(t, err)
+	require.Nil(t, vouchRes.Voucher, "Expected not to be able to create voucher whose value would exceed channel balance")
+	require.EqualValues(t, excessAmt, vouchRes.Shortfall, "Expected voucher shortfall of %d, got %d", excessAmt, vouchRes.Shortfall)
 
 	// Add a voucher whose value would exceed the channel balance
 	vouch := &paych.SignedVoucher{ChannelAddr: channel, Amount: excessAmt, Lane: 4, Nonce: 1}
 	vb, err := vouch.SigningBytes()
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
+
 	sig, err := paymentCreator.WalletSign(ctx, createrAddr, vb)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
+
 	vouch.Signature = sig
 	_, err = paymentReceiver.PaychVoucherAdd(ctx, channel, vouch, nil, abi.NewTokenAmount(1000))
-	if err == nil {
-		t.Fatal(fmt.Errorf("Expected shortfall error of %d", excessAmt))
-	}
+	require.Errorf(t, err, "Expected shortfall error of %d", excessAmt)
 
 	// wait for the settlement period to pass before collecting
 	waitForBlocks(ctx, t, bm, paymentReceiver, receiverAddr, policy.PaychSettleDelay)
 
 	creatorPreCollectBalance, err := paymentCreator.WalletBalance(ctx, createrAddr)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	// collect funds (from receiver, though either party can do it)
 	collectMsg, err := paymentReceiver.PaychCollect(ctx, channel)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
+
 	res, err = paymentReceiver.StateWaitMsg(ctx, collectMsg, 3, api.LookbackNoLimit, true)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if res.Receipt.ExitCode != 0 {
-		t.Fatal("unable to collect on payment channel")
-	}
+	require.NoError(t, err)
+	require.EqualValues(t, 0, res.Receipt.ExitCode, "unable to collect on payment channel")
 
 	// Finally, check the balance for the creator
 	currentCreatorBalance, err := paymentCreator.WalletBalance(ctx, createrAddr)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	// The highest nonce voucher that the creator sent on each lane is 2000
 	totalVouchers := int64(len(lanes) * 2000)
@@ -253,9 +198,7 @@ func TestPaymentChannelsAPI(t *testing.T) {
 	// channel amount - total voucher value
 	expectedRefund := channelAmt - totalVouchers
 	delta := big.Sub(currentCreatorBalance, creatorPreCollectBalance)
-	if !delta.Equals(abi.NewTokenAmount(expectedRefund)) {
-		t.Fatalf("did not send correct funds from creator: expected %d, got %d", expectedRefund, delta)
-	}
+	require.EqualValues(t, abi.NewTokenAmount(expectedRefund), delta, "did not send correct funds from creator: expected %d, got %d", expectedRefund, delta)
 }
 
 func waitForBlocks(ctx context.Context, t *testing.T, bm *kit2.BlockMiner, paymentReceiver kit2.TestFullNode, receiverAddr address.Address, count int) {
@@ -276,14 +219,10 @@ func waitForBlocks(ctx context.Context, t *testing.T, bm *kit2.BlockMiner, payme
 			From:  receiverAddr,
 			Value: types.NewInt(0),
 		}, nil)
-		if err != nil {
-			t.Fatal(err)
-		}
+		require.NoError(t, err)
 
 		_, err = paymentReceiver.StateWaitMsg(ctx, m.Cid(), 1, api.LookbackNoLimit, true)
-		if err != nil {
-			t.Fatal(err)
-		}
+		require.NoError(t, err)
 	}
 }
 
@@ -291,15 +230,12 @@ func waitForMessage(ctx context.Context, t *testing.T, paymentCreator kit2.TestF
 	ctx, cancel := context.WithTimeout(ctx, duration)
 	defer cancel()
 
-	fmt.Println("Waiting for", desc)
+	t.Log("Waiting for", desc)
+
 	res, err := paymentCreator.StateWaitMsg(ctx, msgCid, 1, api.LookbackNoLimit, true)
-	if err != nil {
-		fmt.Println("Error waiting for", desc, err)
-		t.Fatal(err)
-	}
-	if res.Receipt.ExitCode != 0 {
-		t.Fatalf("did not successfully send %s", desc)
-	}
-	fmt.Println("Confirmed", desc)
+	require.NoError(t, err)
+	require.EqualValues(t, 0, res.Receipt.ExitCode, "did not successfully send %s", desc)
+
+	t.Log("Confirmed", desc)
 	return res
 }