github.com/apernet/quic-go@v0.43.1-0.20240515053213-5e9e635fd9f0/internal/wire/stream_data_blocked_frame_test.go (about)

     1  package wire
     2  
     3  import (
     4  	"bytes"
     5  	"io"
     6  
     7  	"github.com/apernet/quic-go/internal/protocol"
     8  	"github.com/apernet/quic-go/quicvarint"
     9  
    10  	. "github.com/onsi/ginkgo/v2"
    11  	. "github.com/onsi/gomega"
    12  )
    13  
    14  var _ = Describe("STREAM_DATA_BLOCKED frame", func() {
    15  	Context("parsing", func() {
    16  		It("accepts sample frame", func() {
    17  			data := encodeVarInt(0xdeadbeef)                 // stream ID
    18  			data = append(data, encodeVarInt(0xdecafbad)...) // offset
    19  			b := bytes.NewReader(data)
    20  			frame, err := parseStreamDataBlockedFrame(b, protocol.Version1)
    21  			Expect(err).ToNot(HaveOccurred())
    22  			Expect(frame.StreamID).To(Equal(protocol.StreamID(0xdeadbeef)))
    23  			Expect(frame.MaximumStreamData).To(Equal(protocol.ByteCount(0xdecafbad)))
    24  			Expect(b.Len()).To(BeZero())
    25  		})
    26  
    27  		It("errors on EOFs", func() {
    28  			data := encodeVarInt(0xdeadbeef)
    29  			data = append(data, encodeVarInt(0xc0010ff)...)
    30  			_, err := parseStreamDataBlockedFrame(bytes.NewReader(data), protocol.Version1)
    31  			Expect(err).NotTo(HaveOccurred())
    32  			for i := range data {
    33  				_, err := parseStreamDataBlockedFrame(bytes.NewReader(data[:i]), protocol.Version1)
    34  				Expect(err).To(MatchError(io.EOF))
    35  			}
    36  		})
    37  	})
    38  
    39  	Context("writing", func() {
    40  		It("has proper min length", func() {
    41  			f := &StreamDataBlockedFrame{
    42  				StreamID:          0x1337,
    43  				MaximumStreamData: 0xdeadbeef,
    44  			}
    45  			Expect(f.Length(0)).To(BeEquivalentTo(1 + quicvarint.Len(0x1337) + quicvarint.Len(0xdeadbeef)))
    46  		})
    47  
    48  		It("writes a sample frame", func() {
    49  			f := &StreamDataBlockedFrame{
    50  				StreamID:          0xdecafbad,
    51  				MaximumStreamData: 0x1337,
    52  			}
    53  			b, err := f.Append(nil, protocol.Version1)
    54  			Expect(err).ToNot(HaveOccurred())
    55  			expected := []byte{streamDataBlockedFrameType}
    56  			expected = append(expected, encodeVarInt(uint64(f.StreamID))...)
    57  			expected = append(expected, encodeVarInt(uint64(f.MaximumStreamData))...)
    58  			Expect(b).To(Equal(expected))
    59  		})
    60  	})
    61  })