function test_getAllClients()
{
//Arrange
$stylist_name = "Donna";
$id = null;
$test_stylist = new Stylist($stylist_name, $id);
$test_stylist->save();
$client_name = "Robin";
$stylist_id = $test_stylist->getId();
$test_client = new Client($client_name, $stylist_id);
$test_client->save();
$client_name2 = "Darla";
$test_client2 = new Client($client_name2, $stylist_id);
$test_client2->save();
//Act
$result = $test_stylist->getAllClients();
//Assert
$this->assertEquals([$test_client, $test_client2], $result);
}
