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#ifndef OSM2PGSQL_TESTS_COMMON_PG_HPP
#define OSM2PGSQL_TESTS_COMMON_PG_HPP
/**
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This file is part of osm2pgsql (https://osm2pgsql.org/).
*
* Copyright (C) 2006-2025 by the osm2pgsql developer community.
* For a full list of authors see the git log.
*/
#include <cstdio>
#include <cstdlib>
#include <stdexcept>
#include <string>
#include <string_view>
#include "format.hpp"
#include "options.hpp"
#include "pgsql.hpp"
#include "pgsql-capabilities.hpp"
#include <catch.hpp>
#ifdef _MSC_VER
#include <process.h>
#include <windows.h>
#define getpid _getpid
#else
#include <sys/types.h>
#include <unistd.h>
#endif
/// Helper classes for postgres connections
namespace testing::pg {
class conn_t : public pg_conn_t
{
public:
conn_t(connection_params_t const &connection_params)
: pg_conn_t(connection_params, "test")
{
}
std::string result_as_string(std::string const &cmd) const
{
pg_result_t const res = exec(cmd);
REQUIRE(res.num_tuples() == 1);
return std::string{res.get(0, 0)};
}
int result_as_int(std::string const &cmd) const
{
return std::stoi(result_as_string(cmd));
}
double result_as_double(std::string const &cmd) const
{
return std::stod(result_as_string(cmd));
}
void assert_double(double expected, std::string const &cmd) const
{
REQUIRE(Approx(expected).epsilon(0.01) == result_as_double(cmd));
}
void assert_null(std::string const &cmd) const
{
pg_result_t const res = exec(cmd);
REQUIRE(res.num_tuples() == 1);
REQUIRE(res.is_null(0, 0));
}
pg_result_t require_row(std::string const &cmd) const
{
pg_result_t res = exec(cmd);
REQUIRE(res.num_tuples() == 1);
return res;
}
int get_count(std::string_view table_name,
std::string_view where = "") const
{
auto const query =
fmt::format("SELECT count(*) FROM {} {} {}", table_name,
(where.empty() ? "" : "WHERE"), where);
return result_as_int(query);
}
void require_has_table(std::string_view table_name) const
{
auto const where = fmt::format("oid = '{}'::regclass", table_name);
REQUIRE(get_count("pg_catalog.pg_class", where) == 1);
}
};
class tempdb_t
{
public:
tempdb_t() noexcept
{
try {
connection_params_t connection_params;
connection_params.set("dbname", "postgres");
conn_t conn{connection_params};
m_db_name =
fmt::format("osm2pgsql-test-{}-{}", getpid(), time(nullptr));
conn.exec(R"(DROP DATABASE IF EXISTS "{}")", m_db_name);
conn.exec(R"(CREATE DATABASE "{}" WITH ENCODING 'UTF8')",
m_db_name);
conn_t local = connect();
local.exec("CREATE EXTENSION postgis");
local.exec("CREATE EXTENSION hstore");
init_database_capabilities(local);
} catch (std::runtime_error const &e) {
fmt::print(stderr,
"Test database cannot be created: {}\n"
"Did you mean to run 'pg_virtualenv ctest'?\n",
e.what());
std::exit(1);
}
}
tempdb_t(tempdb_t const &) = delete;
tempdb_t &operator=(tempdb_t const &) = delete;
tempdb_t(tempdb_t &&) = delete;
tempdb_t &operator=(tempdb_t const &&) = delete;
~tempdb_t() noexcept
{
if (!m_db_name.empty()) {
// Disable removal of the test database by setting the environment
// variable OSM2PGSQL_KEEP_TEST_DB to anything. This can be useful
// when debugging tests.
char const *const keep_db = std::getenv("OSM2PGSQL_KEEP_TEST_DB");
if (keep_db != nullptr) {
return;
}
try {
connection_params_t connection_params;
connection_params.set("dbname", "postgres");
conn_t conn{connection_params};
conn.exec(R"(DROP DATABASE IF EXISTS "{}")", m_db_name);
} catch (...) {
fprintf(stderr, "DROP DATABASE failed. Ignored.\n");
}
}
}
conn_t connect() const { return conn_t{connection_params()}; }
connection_params_t connection_params() const {
connection_params_t params;
params.set("dbname", m_db_name);
return params;
}
private:
std::string m_db_name;
};
} // namespace testing::pg
#endif // OSM2PGSQL_TESTS_COMMON_PG_HPP
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