func TestServerAckSequenceDoesNotWrite(t *testing.T) {
s := handshake.NewServerAckSequence(nil)
buf := bytes.NewBuffer([]byte{})
err := s.WriteTo(buf)
assert.Nil(t, err)
assert.Empty(t, buf.Bytes())
}
func TestServerAckSequenceReportsErroredReads(t *testing.T) {
s := handshake.NewServerAckSequence(nil)
err := s.Read(bytes.NewBuffer([]byte{
// Empty buffer ~> io.EOF
}))
assert.Equal(t, io.EOF, err)
}
func TestServerAckSequenceReadsMatchingC2(t *testing.T) {
s1 := new(handshake.AckPacket)
rand.Read(s1.Payload[:])
buf := bytes.NewBuffer([]byte{})
buf.Write([]byte{0x0, 0x0, 0x0, 0x0}) // Time1
buf.Write([]byte{0x0, 0x0, 0x0, 0x0}) // Padding
buf.Write(s1.Payload[:]) // Matching payload
s := handshake.NewServerAckSequence(s1)
err := s.Read(buf)
assert.Nil(t, err)
}
func TestServerAckSequenceReportsMismatchedChallenges(t *testing.T) {
s1 := new(handshake.AckPacket)
rand.Read(s1.Payload[:])
var mismatched [handshake.PayloadLen]byte
rand.Read(mismatched[:])
buf := bytes.NewBuffer([]byte{})
buf.Write([]byte{0x0, 0x0, 0x0, 0x0}) // Time1
buf.Write([]byte{0x0, 0x0, 0x0, 0x0}) // Padding
buf.Write(mismatched[:]) // Mismatched payload
s := handshake.NewServerAckSequence(s1)
err := s.Read(buf)
assert.Equal(t, handshake.MismatchedChallengeErr, err)
}
func TestServerAckSequenceDoesNotHaveSubsequentSequences(t *testing.T) {
s := handshake.NewServerAckSequence(nil)
assert.Nil(t, s.Next())
}