Function TEST_P

src/tests/slave_tests.cpp:10616–10762

This test verifies the validation for the agent flag `--default_container_dns`.

// This test verifies the validation for the
// agent flag `--default_container_dns`.
TEST_P(DefaultContainerDNSFlagTest, ValidateFlag)
{
  const int argc = 4;
  const char* argv[argc] = {
    "/path/to/program",
    "--master=127.0.0.1:5050",
    "--work_dir=/tmp"
  };

  string containerizer = GetParam();

  // Verifies the unknown network mode is not supported.
  //
  // TODO(qianzhang): Change the value of the `network_mode`
  // to an non-existent enum value once MESOS-7828 is resolved.
  string defaultContainerDNSInfo =
    "--default_container_dns={"
    "  \"" + containerizer + "\": [\n"
    "    {\n"
    "      \"network_mode\": \"UNKNOWN\",\n"
    "      \"dns\": {\n"
    "        \"nameservers\": [ \"8.8.8.8\" ]\n"
    "      }\n"
    "    }\n"
    "  ]\n"
    "}";

  argv[3] = defaultContainerDNSInfo.c_str();

  {
    slave::Flags flags;
    Try<flags::Warnings> load = flags.load(None(), argc, argv);
    EXPECT_ERROR(load);
  }

  // Verifies the host network mode is not supported.
  defaultContainerDNSInfo =
    "--default_container_dns={"
    "  \"" + containerizer + "\": [\n"
    "    {\n"
    "      \"network_mode\": \"HOST\",\n"
    "      \"dns\": {\n"
    "        \"nameservers\": [ \"8.8.8.8\" ]\n"
    "      }\n"
    "    }\n"
    "  ]\n"
    "}";

  argv[3] = defaultContainerDNSInfo.c_str();

  {
    slave::Flags flags;
    Try<flags::Warnings> load = flags.load(None(), argc, argv);
    EXPECT_ERROR(load);
  }

  string network_mode = (containerizer == "mesos" ? "CNI"  : "USER");