silverstripe-framework/tests/php/ORM/TimeTest.php

<?php

namespace SilverStripe\ORM\Tests;

use SilverStripe\ORM\FieldType\DBField;
use SilverStripe\Dev\SapphireTest;
use SilverStripe\ORM\FieldType\DBTime;

class TimeTest extends SapphireTest
{

    public function testNice()
    {
        $time = DBField::create_field('Time', '17:15:55');
        $this->assertEquals('5:15pm', $time->Nice());

        DBTime::config()->update('nice_format', 'H:i:s');
        $this->assertEquals('17:15:55', $time->Nice());
    }
}