uquic/internal/wire/blocked_frame_legacy_test.go

package wire

import (
	"bytes"

	"github.com/lucas-clemente/quic-go/internal/protocol"
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

var _ = Describe("legacy BLOCKED Frame", func() {
	Context("when parsing", func() {
		Context("in big endian", func() {
			It("accepts sample frame for a stream", func() {
				b := bytes.NewReader([]byte{0x5, 0xde, 0xad, 0xbe, 0xef})
				f, err := ParseBlockedFrameLegacy(b, versionBigEndian)
				Expect(err).ToNot(HaveOccurred())
				Expect(f).To(BeAssignableToTypeOf(&StreamBlockedFrame{}))
				frame := f.(*StreamBlockedFrame)
				Expect(frame.StreamID).To(Equal(protocol.StreamID(0xdeadbeef)))
			})

			It("accepts sample frame for the connection", func() {
				b := bytes.NewReader([]byte{0x5, 0x0, 0x0, 0x0, 0x0})
				f, err := ParseBlockedFrameLegacy(b, versionBigEndian)
				Expect(err).ToNot(HaveOccurred())
				Expect(f).To(BeAssignableToTypeOf(&BlockedFrame{}))
			})
		})

		It("errors on EOFs", func() {
			data := []byte{0x5, 0xef, 0xbe, 0xad, 0xde}
			_, err := ParseBlockedFrameLegacy(bytes.NewReader(data), protocol.VersionWhatever)
			Expect(err).NotTo(HaveOccurred())
			for i := range data {
				_, err := ParseBlockedFrameLegacy(bytes.NewReader(data[0:i]), protocol.VersionWhatever)
				Expect(err).To(HaveOccurred())
			}
		})
	})

	Context("when writing", func() {
		Context("in big endian", func() {
			It("writes a BLOCKED frame for a stream", func() {
				b := &bytes.Buffer{}
				frame := StreamBlockedFrame{StreamID: 0x1337}
				frame.Write(b, versionBigEndian)
				Expect(b.Bytes()).To(Equal([]byte{0x5, 0x0, 0x0, 0x13, 0x37}))
			})

			It("has the correct min length for a BLOCKED frame for a stream", func() {
				frame := StreamBlockedFrame{StreamID: 3}
				Expect(frame.MinLength(0)).To(Equal(protocol.ByteCount(5)))
			})

			It("writes a BLOCKED frame for the connection", func() {
				b := &bytes.Buffer{}
				frame := BlockedFrame{}
				frame.Write(b, versionBigEndian)
				Expect(b.Bytes()).To(Equal([]byte{0x5, 0x0, 0x0, 0x0, 0x0}))
			})

			It("has the correct min length for a BLOCKED frame for the connection", func() {
				frame := BlockedFrame{}
				Expect(frame.MinLength(versionBigEndian)).To(Equal(protocol.ByteCount(5)))
			})
		})
	})
})