#include <assert.h>
#include <stdlib.h>
#include <libpq-fe.h>
#include <unistd.h>

int
main()
{
	PGconn *conn;
	PGresult *res;

	conn = PQconnectdb("");
	assert(PQstatus(conn) == CONNECTION_OK);
	res = PQexec(conn, "SET SESSION CHARACTERISTICS AS "
	    "TRANSACTION ISOLATION LEVEL REPEATABLE READ");
	assert(PQresultStatus(res) == PGRES_COMMAND_OK);
	PQclear(res);
	res = PQexec(conn, "BEGIN");
	assert(PQresultStatus(res) == PGRES_COMMAND_OK);
	PQclear(res);
	res = PQexec(conn, "hoge"); /* intentional syntax error */
	assert(PQresultStatus(res) != PGRES_COMMAND_OK);
	PQclear(res);
	assert(PQtransactionStatus(conn) == PQTRANS_INERROR);
	res = PQprepare(conn, "r", "ROLLBACK", 0, NULL);
	assert(PQresultStatus(res) == PGRES_COMMAND_OK);
	PQclear(res);
	res = PQexecPrepared(conn, "r", 0, NULL, NULL, NULL, 0);
	assert(PQresultStatus(res) == PGRES_COMMAND_OK);
	PQclear(res);
	exit(0);
}