add a string representation for the Long Header packet types

internal/protocol/protocol_test.go

@@ -0,0 +1,19 @@
+package protocol
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Protocol", func() {
+	Context("Long Header Packet Types", func() {
+		It("has the correct string representation", func() {
+			Expect(PacketTypeVersionNegotiation.String()).To(Equal("Version Negotiation"))
+			Expect(PacketTypeInitial.String()).To(Equal("Initial"))
+			Expect(PacketTypeRetry.String()).To(Equal("Retry"))
+			Expect(PacketTypeHandshake.String()).To(Equal("Handshake"))
+			Expect(PacketType0RTT.String()).To(Equal("0-RTT Protected"))
+			Expect(PacketType(10).String()).To(Equal("unknown packet type: 10"))
+		})
+	})
+})