public function testModifyColumnDefaultAttribute()
{
$column = new Column('name', 'varchar(30)');
$column->default('John');
$column->null();
$q = new AlterTableQuery('products');
$q->modifyColumn($column);
$this->assertDriverQuery(new MySQLDriver(), $q);
$this->assertSqlStrings($q, [[new MySQLDriver(), 'ALTER TABLE `products` MODIFY COLUMN `name` varchar(30) NULL DEFAULT \'John\'']]);
}
