bool testSimulator()

in katran/lib/testing/KatranTestUtil.cpp [25:119]
88 lines of code
8 McCabe index (conditional complexity)

bool testSimulator(katran::KatranLb& lb) {
  bool success{true};
  // udp, v4 vip v4 real
  auto real = lb.getRealForFlow(katran::KatranFlow{
      .src = "172.16.0.1",
      .dst = "10.200.1.1",
      .srcPort = 31337,
      .dstPort = 80,
      .proto = kUdp,
  });
  if (real != "10.0.0.2") {
    VLOG(2) << "real: " << real;
    LOG(INFO) << "simulation is incorrect for v4 real and v4 udp vip";
    success = false;
  }
  // tcp, v4 vip v4 real
  real = lb.getRealForFlow(katran::KatranFlow{
      .src = "172.16.0.1",
      .dst = "10.200.1.1",
      .srcPort = 31337,
      .dstPort = 80,
      .proto = kTcp,
  });
  if (real != "10.0.0.2") {
    VLOG(2) << "real: " << real;
    LOG(INFO) << "simulation is incorrect for v4 real and v4 tcp vip";
    success = false;
  }
  // tcp, v4 vip v6 real
  real = lb.getRealForFlow(katran::KatranFlow{
      .src = "172.16.0.1",
      .dst = "10.200.1.3",
      .srcPort = 31337,
      .dstPort = 80,
      .proto = kTcp,
  });
  if (real != "fc00::2") {
    VLOG(2) << "real: " << real;
    LOG(INFO) << "simulation is incorrect for v6 real and v4 tcp vip";
    success = false;
  }
  // tcp, v6 vip v6 real
  real = lb.getRealForFlow(katran::KatranFlow{
      .src = "fc00:2::1",
      .dst = "fc00:1::1",
      .srcPort = 31337,
      .dstPort = 80,
      .proto = kTcp,
  });
  if (real != "fc00::3") {
    VLOG(2) << "real: " << real;
    LOG(INFO) << "simulation is incorrect for v6 real and v6 tcp vip";
    success = false;
  }
  // non existing vip
  real = lb.getRealForFlow(katran::KatranFlow{
      .src = "fc00:2::1",
      .dst = "fc00:1::2",
      .srcPort = 31337,
      .dstPort = 80,
      .proto = kTcp,
  });
  if (!real.empty()) {
    VLOG(2) << "real: " << real;
    LOG(INFO) << "incorrect real for non existing vip";
    success = false;
  }
  // malformed flow #1
  real = lb.getRealForFlow(katran::KatranFlow{
      .src = "10.0.0.1",
      .dst = "fc00:1::1",
      .srcPort = 31337,
      .dstPort = 80,
      .proto = kTcp,
  });
  if (!real.empty()) {
    VLOG(2) << "real: " << real;
    LOG(INFO) << "incorrect real for malformed flow #1";
    success = false;
  }
  // malformed flow #2
  real = lb.getRealForFlow(katran::KatranFlow{
      .src = "aaaa",
      .dst = "bbbb",
      .srcPort = 31337,
      .dstPort = 80,
      .proto = kTcp,
  });
  if (!real.empty()) {
    VLOG(2) << "real: " << real;
    LOG(INFO) << "incorrect real for malformed flow #2";
    success = false;
  }
  return success;
}