test_platform.cpp

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#include <gtest/gtest.h>
 
#include <array>
#include <cstdint>
#include <cstdlib>
#include <filesystem>
#include <string>
 
#include "profinet/exceptions.h"
#include "profinet/util.h"
 
#ifndef PROFINET_TEST_INTERFACE
#define PROFINET_TEST_INTERFACE ""
#endif
 
namespace
{
[[nodiscard]] std::string GetTestInterface()
{
  return PROFINET_TEST_INTERFACE;
}
} // namespace
 
TEST(PlatformTests, GetInterfaceMacRejectsEmptyInterface)
{
  EXPECT_THROW(profinet::GetInterfaceMac(""), profinet::SocketError);
}
 
TEST(PlatformTests, GetInterfaceMacRejectsUnknownInterface)
{
  EXPECT_THROW(profinet::GetInterfaceMac("this-interface-does-not-exist"), profinet::SocketError);
}
 
TEST(PlatformTests, GetInterfaceMacReturnsSixByteAddress)
{
  const std::string interface = GetTestInterface();
 
  if (interface.empty())
  {
    GTEST_SKIP() << "Set PROFINET_TEST_INTERFACE to run live interface tests";
  }
 
  const profinet::MacAddress mac = profinet::GetInterfaceMac(interface);
 
  EXPECT_EQ(mac.size(), static_cast<std::size_t>(profinet::macAddressLength));
}
 
TEST(PlatformTests, MacAddressProviderUsesPortableInterfaceLookup)
{
  const std::string interface = GetTestInterface();
 
  if (interface.empty())
  {
    GTEST_SKIP() << "Set PROFINET_TEST_INTERFACE to run live interface tests";
  }
 
  profinet::MacAddressProvider provider;
 
  EXPECT_EQ(provider.GetMac(interface), profinet::GetInterfaceMac(interface));
}
 
TEST(PlatformTests, GetExecutableDirectoryReturnsExistingAbsoluteDirectory)
{
  const std::filesystem::path directory = profinet::GetExecutableDirectory();
 
  ASSERT_TRUE(directory.is_absolute());
  EXPECT_TRUE(std::filesystem::exists(directory));
  EXPECT_TRUE(std::filesystem::is_directory(directory));
}
 
TEST(PlatformTests, GetExecutableDirectoryIsStable)
{
  EXPECT_EQ(profinet::GetExecutableDirectory(), profinet::GetExecutableDirectory());
}