public function testMinus()
{
// Provided as number of seconds
$time = Time::get('2005-05-05 00:00:00');
$this->assertEquals(Time::get('2005-05-04 23:59:50'), $time->minus(10));
$this->assertEquals(Time::get('2005-05-04 23:59:00'), $time->minus(60));
$this->assertEquals(Time::get('2005-05-04 22:00:00'), $time->minus(2 * 3600));
$this->assertEquals(Time::get('2005-05-04 00:00:00'), $time->minus(24 * 3600));
$this->assertEquals(Time::get('2005-04-05 00:00:00'), $time->minus(30 * 24 * 3600));
$this->assertEquals(Time::get('2004-05-05 00:00:00'), $time->minus(365 * 24 * 3600));
// Provided as string
$this->assertEquals(Time::get('2005-05-04 00:00:00'), $time->minus('1 day'));
$this->assertEquals(Time::get('2005-03-05 00:00:00'), $time->minus('2 months'));
$this->assertEquals(Time::get('2002-05-05 00:00:00'), $time->minus('3 year'));
// Time zone settings
$timeZone = new \DateTimeZone($time->getTimeZone()->getName() == 'Europe/Prague' ? 'America/Santiago' : 'Europe/Prague');
$time->setTimeZone($timeZone);
$time2 = $time->minus(86400);
$this->assertSame($time->getTimeZone()->getName(), $time2->getTimeZone()->getName());
}