int main(void) {
URL_T url = URL_new("sqlite:///tmp/test.db");
ConnectionPool_T pool = ConnectionPool_new(url);
ConnectionPool_start(pool);
Connection_T con = ConnectionPool_getConnection(pool);
TRY
{
Connection_execute(con, "create table bleach(name varchar(255))");
PreparedStatement_T p = Connection_prepareStatement(con, "insert into bleach values (?)");
const char *bleach[] = {
"Ichigo Kurosaki", "Rukia Kuchiki", "Orihime Inoue", "Yasutora \"Chad\" Sado",
"Kisuke Urahara", "Uryū Ishida", "Renji Abarai", 0
};
for (int i = 0; bleach[i]; i++) {
PreparedStatement_setString(p, 1, bleach[i]);
PreparedStatement_execute(p);
}
ResultSet_T r = Connection_executeQuery(con, "select name from bleach");
while (ResultSet_next(r))
printf("%s\n", ResultSet_getString(r, 1));
Connection_execute(con, "drop table bleach;");
}
CATCH(SQLException)
{
printf("SQLException -- %s\n", Exception_frame.message);
}
FINALLY
{
Connection_close(con);
}
END_TRY;
ConnectionPool_free(&pool);
URL_free(&url);
return 0;
}
int main(int argc, char *argv[])
{
URL_T url = URL_new("mysql://127.0.0.1:3306/oauth2?user=dev&password=dev");
ConnectionPool_T pool = ConnectionPool_new(url);
ConnectionPool_start(pool);
Connection_T con = ConnectionPool_getConnection(pool);
TRY
{
ResultSet_T result = Connection_executeQuery(con,
"SELECT access_token, client_id, user_id, expires FROM oauth_access_tokens");
while (ResultSet_next(result))
{
const char *access_token = ResultSet_getStringByName(result, "access_token");
printf("%s\t", access_token);
const char *client_id = ResultSet_getStringByName(result, "client_id");
printf("%s\t", client_id);
printf("\n");
}
}
CATCH(SQLException)
{
printf("SQLException -- %s\n", Exception_frame.message);
}
FINALLY
{
Connection_close(con);
}
END_TRY;
ConnectionPool_free(&pool);
URL_free(&url);
return 0;
}
struct PointArray* closest_pair(char *filename){
struct Connection *conn = File_open(filename, "rt");
struct PointArray *point_array = Connection_process(conn);
Connection_close(conn);
struct PointArraySplitted *split_array = split_point_array(point_array);
struct OrderedPointArray *ordered1 = malloc(sizeof(struct OrderedPointArray));
ordered1->x_ordered = split_array->array1;
ordered1->y_ordered = split_array->array1;
struct OrderedPointArray *ordered2 = malloc(sizeof(struct OrderedPointArray));
ordered2->x_ordered = split_array->array2;
ordered2->y_ordered = split_array->array2;
struct PointArray *result;
struct OrderedPointArray *result1 = split_sort(ordered1);
struct OrderedPointArray *result2 = split_sort(ordered2);
struct OrderedPointArray *result_merged = merge_point_array(result1, result2);
divide_conquer(result_merged->x_ordered, result_merged->y_ordered);
return result;
}
void
seaf_db_trans_close (SeafDBTrans *trans)
{
Connection_close (trans->conn);
g_free (trans);
}
static void login_request_cb(conn *c, unsigned char *msg, size_t sz)
{
Connection_T dbc = ConnectionPool_getConnection(pool);
if (NULL == dbc) {
mwarn("ConnectionPool_getConnection failed!");
return;
}
TRY {
/* check account && passwd */
login::login_request lr;
msg_body<login::login_request>(msg, sz, &lr);
ResultSet_T result = Connection_executeQuery(dbc,
"SELECT `id` FROM `profile` WHERE `account`='%s' AND `passwd`='%s';",
lr.account().c_str(), lr.passwd().c_str());
if (ResultSet_next(result)) {
uint64_t uid = ResultSet_getLLong(result, 1);
login::error err = login::success;
do {
int tempid = user_manager_t::get_guid();
user_t *user = (user_t *)malloc(sizeof(user_t));
if (NULL == user) {
mdebug("user_t alloc failed!");
err = login::unknow;
break;
}
user->id = tempid;
user->c = NULL;
user->refcnt = 1;
pthread_mutex_init(&user->lock, NULL);
if (0 > user_mgr->add_user(user)) {
mdebug("add_user failed!");
err = login::unknow;
break;
}
user_lock(user);
user->c = c;
user_unlock(user);
conn_lock(c);
c->user = user;
conn_unlock(c);
/* tell center */
login::user_login_request ulr;
ulr.set_tempid(tempid);
ulr.set_uid(uid);
center_info_t *info = center_info_mgr->get_center_info_incref(1);
if (info) {
conn_write<login::user_login_request>(info->c, le_user_login_request, &ulr);
center_info_decref(info);
}
return;
} while (0);
login::login_reply lr;
lr.set_err(err);
conn_write<login::login_reply>(c, lc_login_reply, &lr);
} else {
login::login_reply lr;
lr.set_err(login::auth);
conn_write<login::login_reply>(c, lc_login_reply, &lr);
}
} CATCH(SQLException) {
merror("SQLException -- %s", Exception_frame.message);
} FINALLY {
Connection_close(dbc);
} END_TRY;
}
static void testPool(const char *testURL) {
URL_T url;
char *schema;
ConnectionPool_T pool;
char *data[]= {"Fry", "Leela", "Bender", "Farnsworth",
"Zoidberg", "Amy", "Hermes", "Nibbler", "Cubert",
"Zapp", "Joey Mousepad", "ЯΣ༆", 0};
if (Str_startsWith(testURL, "mysql")) {
schema = SCHEMA_MYSQL;
} else if (Str_startsWith(testURL, "postgresql")) {
schema = SCHEMA_POSTGRESQL;
} else if (Str_startsWith(testURL, "sqlite")) {
schema = SCHEMA_SQLITE;
} else if (Str_startsWith(testURL, "oracle")) {
schema = SCHEMA_ORACLE;
}
else {
printf("Unsupported database protocol\n");
exit(1);
}
printf("=> Test1: create/destroy\n");
{
pool = ConnectionPool_new(URL_new(testURL));
assert(pool);
url = ConnectionPool_getURL(pool);
ConnectionPool_free(&pool);
assert(! pool);
URL_free(&url);
}
printf("=> Test1: OK\n\n");
printf("=> Test2: NULL value\n");
{
url = URL_new(NULL);
assert(! url);
pool = ConnectionPool_new(url);
assert(! pool);
}
printf("=> Test2: OK\n\n");
printf("=> Test3: start/stop\n");
{
url = URL_new(testURL);
pool = ConnectionPool_new(url);
assert(pool);
ConnectionPool_start(pool);
ConnectionPool_stop(pool);
ConnectionPool_free(&pool);
assert(pool==NULL);
URL_free(&url);
// Test that exception is thrown on start error
TRY
{
url = URL_new("not://a/database");
pool = ConnectionPool_new(url);
assert(pool);
ConnectionPool_start(pool);
printf("\tResult: Test failed -- exception not thrown\n");
exit(1);
}
CATCH(SQLException) {
// OK
}
FINALLY {
ConnectionPool_free(&pool);
assert(pool==NULL);
URL_free(&url);
}
END_TRY;
}
printf("=> Test3: OK\n\n");
printf("=> Test4: Connection execute & transaction\n");
{
int i;
Connection_T con;
url = URL_new(testURL);
pool = ConnectionPool_new(url);
assert(pool);
ConnectionPool_setAbortHandler(pool, TabortHandler);
ConnectionPool_start(pool);
con = ConnectionPool_getConnection(pool);
assert(con);
TRY Connection_execute(con, "drop table zild_t;"); ELSE END_TRY;
Connection_execute(con, "%s", schema);
Connection_beginTransaction(con);
/* Insert values into database and assume that auto increment of id works */
for (i = 0; data[i]; i++)
Connection_execute(con, "insert into zild_t (name, percent) values('%s', %d.%d);", data[i], i+1, i);
// Assert that the last insert statement added one row
assert(Connection_rowsChanged(con) == 1);
/* Assert that last row id works for MySQL and SQLite. Neither Oracle nor PostgreSQL
support last row id directly. The way to do this in PostgreSQL is to use
currval() or return the id on insert. */
if (IS(URL_getProtocol(url), "sqlite") || IS(URL_getProtocol(url), "mysql"))
assert(Connection_lastRowId(con) == 12);
Connection_commit(con);
printf("\tResult: table zild_t successfully created\n");
Connection_close(con);
}
printf("=> Test4: OK\n\n");
printf("=> Test5: Prepared Statement\n");
{
int i;
char blob[8192];
char *images[]= {"Ceci n'est pas une pipe", "Mona Lisa",
"Bryllup i Hardanger", "The Scream",
"Vampyre", "Balcony", "Cycle", "Day & Night",
"Hand with Reflecting Sphere",
"Drawing Hands", "Ascending and Descending", 0};
Connection_T con = ConnectionPool_getConnection(pool);
assert(con);
// 1. Prepared statement, perform a nonsense update to test rowsChanged
PreparedStatement_T p1 = Connection_prepareStatement(con, "update zild_t set image=?;");
PreparedStatement_setString(p1, 1, "");
PreparedStatement_execute(p1);
printf("\tRows changed: %lld\n", PreparedStatement_rowsChanged(p1));
// Assert that all 12 rows in the data set was changed
assert(PreparedStatement_rowsChanged(p1) == 12);
// 2. Prepared statement, update the table proper with "images".
PreparedStatement_T pre = Connection_prepareStatement(con, "update zild_t set image=? where id=?;");
assert(pre);
for (i = 0; images[i]; i++) {
PreparedStatement_setBlob(pre, 1, images[i], (int)strlen(images[i])+1);
PreparedStatement_setInt(pre, 2, i + 1);
PreparedStatement_execute(pre);
}
// The last execute changed one row only
assert(PreparedStatement_rowsChanged(pre) == 1);
/* Add a database null blob value */
PreparedStatement_setBlob(pre, 1, NULL, 0);
PreparedStatement_setInt(pre, 2, 5);
PreparedStatement_execute(pre);
/* Add a database null string value */
PreparedStatement_setString(pre, 1, NULL);
PreparedStatement_setInt(pre, 2, 1);
PreparedStatement_execute(pre);
/* Add a large blob */
memset(blob, 'x', 8192);
blob[8191] = 0;
/* Mark start and end */
*blob='S'; blob[8190] = 'E';
PreparedStatement_setBlob(pre, 1, blob, 8192);
PreparedStatement_setInt(pre, 2, i + 1);
PreparedStatement_execute(pre);
printf("\tResult: prepared statement successfully executed\n");
Connection_close(con);
}
printf("=> Test5: OK\n\n");
printf("=> Test6: Result Sets\n");
{
int i;
int imagesize = 0;
Connection_T con;
ResultSet_T rset;
ResultSet_T names;
PreparedStatement_T pre;
con = ConnectionPool_getConnection(pool);
assert(con);
rset = Connection_executeQuery(con, "select id, name, percent, image from zild_t where id < %d order by id;", 100);
assert(rset);
printf("\tResult:\n");
printf("\tNumber of columns in resultset: %d\n\t", ResultSet_getColumnCount(rset));
assert(4==ResultSet_getColumnCount(rset));
i = 1;
printf("%-5s", ResultSet_getColumnName(rset, i++));
printf("%-16s", ResultSet_getColumnName(rset, i++));
printf("%-10s", ResultSet_getColumnName(rset, i++));
printf("%-16s", ResultSet_getColumnName(rset, i++));
printf("\n\t------------------------------------------------------\n");
while (ResultSet_next(rset)) {
int id = ResultSet_getIntByName(rset, "id");
const char *name = ResultSet_getString(rset, 2);
double percent = ResultSet_getDoubleByName(rset, "percent");
const char *blob = (char*)ResultSet_getBlob(rset, 4, &imagesize);
printf("\t%-5d%-16s%-10.2f%-16.38s\n", id, name ? name : "null", percent, imagesize ? blob : "");
}
rset = Connection_executeQuery(con, "select image from zild_t where id=12;");
assert(1==ResultSet_getColumnCount(rset));
// Assert that types are interchangeable (to some degree) and that all data is returned
while (ResultSet_next(rset)) {
const char *image = ResultSet_getStringByName(rset, "image");
const void *blob = ResultSet_getBlobByName(rset, "image", &imagesize);
assert(image && blob);
assert(strlen(image) + 1 == 8192);
assert(imagesize == 8192);
}
printf("\tResult: check max rows..");
Connection_setMaxRows(con, 3);
rset = Connection_executeQuery(con, "select id from zild_t;");
assert(rset);
i = 0;
while (ResultSet_next(rset)) i++;
assert((i)==3);
printf("success\n");
printf("\tResult: check prepared statement resultset..");
Connection_setMaxRows(con, 0);
pre = Connection_prepareStatement(con, "select name from zild_t where id=?");
assert(pre);
PreparedStatement_setInt(pre, 1, 2);
names = PreparedStatement_executeQuery(pre);
assert(names);
assert(ResultSet_next(names));
assert(Str_isEqual("Leela", ResultSet_getString(names, 1)));
printf("success\n");
printf("\tResult: check prepared statement re-execute..");
PreparedStatement_setInt(pre, 1, 1);
names = PreparedStatement_executeQuery(pre);
assert(names);
assert(ResultSet_next(names));
assert(Str_isEqual("Fry", ResultSet_getString(names, 1)));
printf("success\n");
printf("\tResult: check prepared statement without in-params..");
pre = Connection_prepareStatement(con, "select name from zild_t;");
assert(pre);
names = PreparedStatement_executeQuery(pre);
assert(names);
for (i = 0; ResultSet_next(names); i++);
assert(i==12);
printf("success\n");
/* Need to close and release statements before
we can drop the table, sqlite need this */
Connection_clear(con);
Connection_execute(con, "drop table zild_t;");
Connection_close(con);
ConnectionPool_stop(pool);
ConnectionPool_free(&pool);
assert(pool==NULL);
URL_free(&url);
}
printf("=> Test6: OK\n\n");
printf("=> Test7: reaper start/stop\n");
{
int i;
Vector_T v = Vector_new(20);
url = URL_new(testURL);
pool = ConnectionPool_new(url);
assert(pool);
ConnectionPool_setInitialConnections(pool, 4);
ConnectionPool_setMaxConnections(pool, 20);
ConnectionPool_setConnectionTimeout(pool, 4);
ConnectionPool_setReaper(pool, 4);
ConnectionPool_setAbortHandler(pool, TabortHandler);
ConnectionPool_start(pool);
assert(4==ConnectionPool_size(pool));
printf("Creating 20 Connections..");
for (i = 0; i<20; i++)
Vector_push(v, ConnectionPool_getConnection(pool));
assert(ConnectionPool_size(pool) == 20);
assert(ConnectionPool_active(pool) == 20);
printf("success\n");
printf("Closing Connections down to initial..");
while (! Vector_isEmpty(v))
Connection_close(Vector_pop(v));
assert(ConnectionPool_active(pool) == 0);
assert(ConnectionPool_size(pool) == 20);
printf("success\n");
printf("Please wait 10 sec for reaper to harvest closed connections..");
Connection_T con = ConnectionPool_getConnection(pool); // Activate one connection to verify the reaper does not close any active
fflush(stdout);
sleep(10);
assert(5 == ConnectionPool_size(pool)); // 4 initial connections + the one active we got above
assert(1 == ConnectionPool_active(pool));
printf("success\n");
Connection_close(con);
ConnectionPool_stop(pool);
ConnectionPool_free(&pool);
Vector_free(&v);
assert(pool==NULL);
URL_free(&url);
}
printf("=> Test7: OK\n\n");
printf("=> Test8: Exceptions handling\n");
{
int i;
Connection_T con;
ResultSet_T result;
url = URL_new(testURL);
pool = ConnectionPool_new(url);
assert(pool);
ConnectionPool_setAbortHandler(pool, TabortHandler);
ConnectionPool_start(pool);
con = ConnectionPool_getConnection(pool);
assert(con);
/*
* The following should work without throwing exceptions
*/
TRY
{
Connection_execute(con, "%s", schema);
}
ELSE
{
printf("\tResult: Creating table zild_t failed -- %s\n", Exception_frame.message);
assert(false); // Should not fail
}
END_TRY;
TRY
{
Connection_beginTransaction(con);
for (i = 0; data[i]; i++)
Connection_execute(con, "insert into zild_t (name, percent) values('%s', %d.%d);", data[i], i+1, i);
Connection_commit(con);
printf("\tResult: table zild_t successfully created\n");
}
ELSE
{
printf("\tResult: Test failed -- %s\n", Exception_frame.message);
assert(false); // Should not fail
}
FINALLY
{
Connection_close(con);
}
END_TRY;
assert((con = ConnectionPool_getConnection(pool)));
TRY
{
int i, j;
const char *bg[]= {"Starbuck", "Sharon Valerii",
"Number Six", "Gaius Baltar", "William Adama",
"Lee \"Apollo\" Adama", "Laura Roslin", 0};
PreparedStatement_T p = Connection_prepareStatement
(con, "insert into zild_t (name) values(?);");
/* If we did not get a statement, an SQLException is thrown
and we will not get here. So we can safely use the
statement now. Likewise, below, we do not have to
check return values from the statement since any error
will throw an SQLException and transfer the control
to the exception handler
*/
for (i = 0, j = 42; bg[i]; i++, j++) {
PreparedStatement_setString(p, 1, bg[i]);
PreparedStatement_execute(p);
}
}
CATCH(SQLException)
{
printf("\tResult: prepare statement failed -- %s\n", Exception_frame.message);
assert(false);
}
END_TRY;
TRY
{
printf("\t\tBattlestar Galactica: \n");
result = Connection_executeQuery(con, "select name from zild_t where id > 12;");
while (ResultSet_next(result))
printf("\t\t%s\n", ResultSet_getString(result, 1));
}
CATCH(SQLException)
{
printf("\tResult: resultset failed -- %s\n", Exception_frame.message);
assert(false);
}
FINALLY
{
Connection_close(con);
}
END_TRY;
/*
* The following should fail and throw exceptions. The exception error
* message can be obtained with Exception_frame.message, or from
* Connection_getLastError(con). Exception_frame.message contains both
* SQL errors or api errors such as prepared statement parameter index
* out of range, while Connection_getLastError(con) only has SQL errors
*/
TRY
{
assert((con = ConnectionPool_getConnection(pool)));
Connection_execute(con, "%s", schema);
/* Creating the table again should fail and we
should not come here */
printf("\tResult: Test failed -- exception not thrown\n");
exit(1);
}
CATCH(SQLException)
{
Connection_close(con);
}
END_TRY;
TRY
{
assert((con = ConnectionPool_getConnection(pool)));
printf("\tTesting: Query with errors.. ");
Connection_executeQuery(con, "blablabala;");
printf("\tResult: Test failed -- exception not thrown\n");
exit(1);
}
CATCH(SQLException)
{
printf("ok\n");
Connection_close(con);
}
END_TRY;
TRY
{
printf("\tTesting: Prepared statement query with errors.. ");
assert((con = ConnectionPool_getConnection(pool)));
PreparedStatement_T p = Connection_prepareStatement(con, "blablabala;");
ResultSet_T r = PreparedStatement_executeQuery(p);
while(ResultSet_next(r));
printf("\tResult: Test failed -- exception not thrown\n");
exit(1);
}
CATCH(SQLException)
{
printf("ok\n");
Connection_close(con);
}
END_TRY;
TRY
{
assert((con = ConnectionPool_getConnection(pool)));
printf("\tTesting: Column index out of range.. ");
result = Connection_executeQuery(con, "select id, name from zild_t;");
while (ResultSet_next(result)) {
int id = ResultSet_getInt(result, 1);
const char *name = ResultSet_getString(result, 2);
/* So far so good, now, try access an invalid
column, which should throw an SQLException */
int bogus = ResultSet_getInt(result, 3);
printf("\tResult: Test failed -- exception not thrown\n");
printf("%d, %s, %d", id, name, bogus);
exit(1);
}
}
CATCH(SQLException)
{
printf("ok\n");
Connection_close(con);
}
END_TRY;
TRY
{
assert((con = ConnectionPool_getConnection(pool)));
printf("\tTesting: Invalid column name.. ");
result = Connection_executeQuery(con, "select name from zild_t;");
while (ResultSet_next(result)) {
const char *name = ResultSet_getStringByName(result, "nonexistingcolumnname");
printf("%s", name);
printf("\tResult: Test failed -- exception not thrown\n");
exit(1);
}
}
CATCH(SQLException)
{
printf("ok\n");
Connection_close(con);
}
END_TRY;
TRY
{
assert((con = ConnectionPool_getConnection(pool)));
PreparedStatement_T p = Connection_prepareStatement(con, "update zild_t set name = ? where id = ?;");
printf("\tTesting: Parameter index out of range.. ");
PreparedStatement_setInt(p, 3, 123);
printf("\tResult: Test failed -- exception not thrown\n");
exit(1);
}
CATCH(SQLException)
{
printf("ok\n");
}
FINALLY
{
Connection_close(con);
}
END_TRY;
assert((con = ConnectionPool_getConnection(pool)));
Connection_execute(con, "drop table zild_t;");
Connection_close(con);
ConnectionPool_stop(pool);
ConnectionPool_free(&pool);
assert(pool==NULL);
URL_free(&url);
}
printf("=> Test8: OK\n\n");
printf("=> Test9: Ensure Capacity\n");
{
/* Check that MySQL ensureCapacity works for columns that exceed the preallocated buffer and that no truncation is done */
if ( Str_startsWith(testURL, "mysql")) {
int myimagesize;
url = URL_new(testURL);
pool = ConnectionPool_new(url);
assert(pool);
ConnectionPool_start(pool);
Connection_T con = ConnectionPool_getConnection(pool);
assert(con);
Connection_execute(con, "CREATE TABLE zild_t(id INTEGER AUTO_INCREMENT PRIMARY KEY, image BLOB, string TEXT);");
PreparedStatement_T p = Connection_prepareStatement(con, "insert into zild_t (image, string) values(?, ?);");
char t[4096];
memset(t, 'x', 4096);
t[4095] = 0;
for (int i = 0; i < 4; i++) {
PreparedStatement_setBlob(p, 1, t, (i+1)*512); // store successive larger string-blobs to trigger realloc on ResultSet_getBlobByName
PreparedStatement_setString(p, 2, t);
PreparedStatement_execute(p);
}
ResultSet_T r = Connection_executeQuery(con, "select image, string from zild_t;");
for (int i = 0; ResultSet_next(r); i++) {
ResultSet_getBlobByName(r, "image", &myimagesize);
const char *image = ResultSet_getStringByName(r, "image"); // Blob as image should be terminated
const char *string = ResultSet_getStringByName(r, "string");
assert(myimagesize == (i+1)*512);
assert(strlen(image) == ((i+1)*512));
assert(strlen(string) == 4095);
}
p = Connection_prepareStatement(con, "select image, string from zild_t;");
r = PreparedStatement_executeQuery(p);
for (int i = 0; ResultSet_next(r); i++) {
ResultSet_getBlobByName(r, "image", &myimagesize);
const char *image = ResultSet_getStringByName(r, "image");
const char *string = (char*)ResultSet_getStringByName(r, "string");
assert(myimagesize == (i+1)*512);
assert(strlen(image) == ((i+1)*512));
assert(strlen(string) == 4095);
}
Connection_execute(con, "drop table zild_t;");
Connection_close(con);
ConnectionPool_stop(pool);
ConnectionPool_free(&pool);
URL_free(&url);
}
}
printf("=> Test9: OK\n\n");
printf("============> Connection Pool Tests: OK\n\n");
}
void
ccnet_db_statement_free (CcnetDBStatement *p)
{
Connection_close (p->conn);
g_free (p);
}
/*
run database lifecycle
*/
void
Database_run(void) {
Connection *conn;
Address *record = malloc(sizeof(Address));
check(record, "address alloc failed");
if (fopen(TESTDB, "r"))
conn = Connection_open(TESTDB, 'w');
else
conn = Connection_open(TESTDB, 'c');
check(conn, "database connection failure");
Database_list(conn);
for (int i = -1; i < 5; i++)
Address_print(Database_getbyidx(conn, i));
strcpy(record->nickname, "Joe");
strcpy(record->name, "Hans Glück");
strcpy(record->email, "*****@*****.**");
check(!(Database_set(conn, record)), "database set() record");
strcpy(record->nickname, "Grit");
strcpy(record->name, "Gretel Glück");
strcpy(record->email, "*****@*****.**");
check(!(Database_set(conn, record)), "database set() record");
strcpy(record->nickname, "rs");
strcpy(record->name, "Rumpelstilzchen");
strcpy(record->email, "*****@*****.**");
check(!(Database_set(conn, record)), "database set() record");
Database_list(conn);
/* avoid memory leak */
cfree(record);
/* reuse record */
record = Database_getbyidx(conn, 1);
check(!(Database_set(conn, record)), "database set() record");
Database_list(conn);
for (int i = 0; i < MAXRECORDS; i++)
if (conn->db->records[i].set)
check(!(Database_writebyidx(conn, i)), "write-by-idx error");
Database_list(conn);
check(!(Connection_close(conn)), "connection close failed");
/* leaves record as dangling pointer, hence reset it */
record = NULL;
return;
error:
exit(-1);
}