run gofumpt, enable the gofumpt linter

integrationtests/self/handshake_test.go

@@ -356,7 +356,6 @@ var _ = Describe("Handshake tests", func() {
 			Expect(err).To(HaveOccurred())
 			Expect(err.(*qerr.QuicError).ErrorCode).To(Equal(qerr.ConnectionRefused))
 		})
-
 	})
 
 	Context("ALPN", func() {

integrationtests/self/key_update_test.go

@@ -16,8 +16,10 @@ import (
 	. "github.com/onsi/gomega"
 )
 
-var sentHeaders []*logging.ExtendedHeader
-var receivedHeaders []*logging.ExtendedHeader
+var (
+	sentHeaders     []*logging.ExtendedHeader
+	receivedHeaders []*logging.ExtendedHeader
+)
 
 func countKeyPhases() (sent, received int) {
 	lastKeyPhase := protocol.KeyPhaseOne
@@ -75,6 +77,7 @@ func (t *connTracer) BufferedPacket(logging.PacketType)
 func (t *connTracer) DroppedPacket(logging.PacketType, logging.ByteCount, logging.PacketDropReason) {}
 func (t *connTracer) UpdatedMetrics(rttStats *logging.RTTStats, cwnd, bytesInFlight logging.ByteCount, packetsInFlight int) {
 }
+
 func (t *connTracer) LostPacket(logging.EncryptionLevel, logging.PacketNumber, logging.PacketLossReason) {
 }
 func (t *connTracer) UpdatedCongestionState(logging.CongestionState)                     {}

integrationtests/tools/proxy/proxy_suite_test.go

@@ -1,10 +1,10 @@
 package quicproxy
 
 import (
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-
-	"testing"
 )
 
 func TestQuicGo(t *testing.T) {