message: Make sure fixture is initialized for these tests
diff: @@ -562,6 +562,7 @@ pub fn encode_packet(crypto: &dyn CryptoCtx, hdr: &PacketHdr, body: &[u8]) -> Ve
  mod tests {
  use super::*;
  use neqo_common::matches;
  + use test_fixture::fixture_init;
  const TEST_BODY: [u8; 6] = [0x01, 0x23, 0x45, 0x67, 0x89, 0x10];
  @@ -712,6 +713,7 @@ mod tests {
  #[test]
  fn test_retry() {
  + fixture_init();
  let mut hdr = default_hdr();
  hdr.tipe = PacketType::Retry {
  odcid: ConnectionId(vec![9, 8, 7, 6, 5, 4, 3, 2]),
  @@ -729,6 +731,7 @@ mod tests {
  #[test]
  fn generate_initial_cid() {
  + fixture_init();
  for i in 0..100 {
  let cid = ConnectionId::generate_initial();
  if !matches!(cid.len(), 8..=20) {
  