/**
* Test the rand function
*/
public function testRand()
{
$pdo = new PDO("sqlite::memory:", null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
MySQLite::createFunctions($pdo);
$pdo->exec("CREATE TABLE testing(id INT PRIMARY KEY NOT NULL)");
$stmt = $pdo->prepare("INSERT INTO testing (id) VALUES (?)");
for ($x = 0; $x <= 10; $x++) {
$stmt->execute([$x]);
}
$results = [];
for ($x = 0; $x < 20; $x++) {
$results[] = $pdo->query('SELECT id FROM testing ORDER BY RAND() LIMIT 1')->fetch(PDO::FETCH_COLUMN);
}
$this->assertNotEquals(array_slice($results, 0, 10), array_slice($results, 10, 10));
}
