public function testModifyColumn()
{
$this->specify('The SQL generated to modify a column in a table is invalid', function ($schema, $to, $fom, $expected) {
$dialect = new Postgresql();
$columns = $this->getColumns();
expect($dialect->modifyColumn('table', $schema, $columns[$to], $columns[$fom]))->equals($expected);
}, ['examples' => $this->getModifyColumn()]);
}