test_ethernetPacketBackendLinux.cpp

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#include <chrono>
#include <cstdint>
 
#include "ethernetPacketBackendTestFixture.h"
#include "profinet/protocol.h"
 
using namespace profinet;
using namespace std::chrono_literals;
 
namespace
{
constexpr std::uint16_t kLinuxTestEtherType = 0x88B6;
 
const Bytes kFrame{
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0x02, 0x00, 0x00, 0x00, 0x10, 0x01,
    0x88, 0xB6,
    0x10, 0x20, 0x30, 0x40};
} // namespace
 
TEST_F(EthernetPacketBackendTestFixture, LinuxPacketReadinessReceivesFrame)
{
  const auto interfaceValue = GetTestInterface();
  if (!interfaceValue.has_value())
  {
    GTEST_SKIP() << "Set PROFINET_TEST_INTERFACE to run live Ethernet backend tests";
  }
  const std::string& interface = *interfaceValue;
 
  auto sender = CreateBackend(interface, 0U);
  auto receiver = CreateBackend(interface, kLinuxTestEtherType);
 
  receiver->SetTimeout(1000ms);
  sender->Send(kFrame);
 
  const Bytes received = receiver->Recv();
 
  ASSERT_FALSE(received.empty());
  EXPECT_EQ(received, kFrame);
}
 
TEST_F(EthernetPacketBackendTestFixture, LinuxPacketReadinessTimesOut)
{
  const auto interfaceValue = GetTestInterface();
  if (!interfaceValue.has_value())
  {
    GTEST_SKIP() << "Set PROFINET_TEST_INTERFACE to run live Ethernet backend tests";
  }
  const std::string& interface = *interfaceValue;
 
  auto backend = CreateBackend(interface, kLinuxTestEtherType);
  backend->SetTimeout(25ms);
 
  const auto start = std::chrono::steady_clock::now();
  const Bytes received = backend->Recv();
  const auto elapsed = std::chrono::steady_clock::now() - start;
 
  EXPECT_TRUE(received.empty());
  EXPECT_GE(elapsed, 15ms);
}