ZeroTierOne/ext/libpqxx-7.7.3/test/unit/test_field.cxx

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#include <pqxx/transaction>
#include "../test_helpers.hxx"
namespace
{
void test_field()
{
pqxx::connection c;
pqxx::work tx{c};
auto const r1{tx.exec1("SELECT 9")};
auto const &f1{r1[0]};
PQXX_CHECK_EQUAL(f1.as<std::string>(), "9", "as<string>() is broken.");
PQXX_CHECK_EQUAL(
f1.as<std::string>("z"), "9", "as<string>(string) is broken.");
PQXX_CHECK_EQUAL(f1.as<int>(), 9, "as<int>() is broken.");
PQXX_CHECK_EQUAL(f1.as<int>(10), 9, "as<int>(int) is broken.");
std::string s;
PQXX_CHECK(f1.to(s), "to(string) failed.");
PQXX_CHECK_EQUAL(s, "9", "to(string) is broken.");
s = "x";
PQXX_CHECK(f1.to(s, std::string{"7"}), "to(string, string) failed.");
PQXX_CHECK_EQUAL(s, "9", "to(string, string) is broken.");
int i{};
PQXX_CHECK(f1.to(i), "to(int) failed.");
PQXX_CHECK_EQUAL(i, 9, "to(int) is broken.");
i = 8;
PQXX_CHECK(f1.to(i, 12), "to(int, int) failed.");
PQXX_CHECK_EQUAL(i, 9, "to(int, int) is broken.");
auto const r2{tx.exec1("SELECT NULL")};
auto const f2{r2[0]};
i = 100;
PQXX_CHECK_THROWS(
f2.as<int>(), pqxx::conversion_error, "Null conversion failed to throw.");
PQXX_CHECK_EQUAL(i, 100, "Null conversion touched its output.");
PQXX_CHECK_EQUAL(f2.as<int>(66), 66, "as<int> default is broken.");
PQXX_CHECK(!(f2.to(i)), "to(int) failed to report a null.");
PQXX_CHECK(!(f2.to(i, 54)), "to(int, int) failed to report a null.");
PQXX_CHECK_EQUAL(i, 54, "to(int, int) failed to default.");
auto const r3{tx.exec("SELECT generate_series(1, 5)")};
PQXX_CHECK_EQUAL(r3.at(3, 0).as<int>(), 4, "Two-argument at() went wrong.");
#if defined(PQXX_HAVE_MULTIDIMENSIONAL_SUBSCRIPT)
PQXX_CHECK_EQUAL((r3[3, 0].as<int>()), 4, "Two-argument [] went wrong.");
#endif
}
PQXX_REGISTER_TEST(test_field);
} // namespace