function testYAMLDeleteClause()
{
$file = new qio\File(__DIR__ . '/Mock/mock.yml');
$query = new YML\Query();
$query->delete('product')->update($file)->where('quantity', 6);
$result = $query();
$query = new YML\Query();
$query->select('product')->from($file)->where('quantity', 6);
$result = $query();
$this->assertEquals(0, count($result['product']));
}
