<?php

namespace Cron\Tests;

use Cron\MonthField;
use DateTime;

/**
 * @author Michael Dowling <mtdowling@gmail.com>
 */
class MonthFieldTest extends \PHPUnit_Framework_TestCase
{
	/**
	 * @covers Cron\MonthField::validate
	 */
	public function testValdatesField()
	{
		$f = new MonthField();
		$this->assertTrue($f->validate('12'));
		$this->assertTrue($f->validate('*'));
		$this->assertTrue($f->validate('*/10,2,1-12'));
		$this->assertFalse($f->validate('1.fix-regexp'));
	}

	/**
	 * @covers Cron\MonthField::increment
	 */
	public function testIncrementsDate()
	{
		$d = new DateTime('2011-03-15 11:15:00');
		$f = new MonthField();
		$f->increment($d);
		$this->assertEquals('2011-04-01 00:00:00', $d->format('Y-m-d H:i:s'));

		$d = new DateTime('2011-03-15 11:15:00');
		$f->increment($d, true);
		$this->assertEquals('2011-02-28 23:59:00', $d->format('Y-m-d H:i:s'));
	}

	/**
	 * @covers Cron\MonthField::increment
	 */
	public function testIncrementsDateWithThirtyMinuteTimezone()
	{
		$tz = date_default_timezone_get();
		date_default_timezone_set('America/St_Johns');
		$d = new DateTime('2011-03-31 11:59:59');
		$f = new MonthField();
		$f->increment($d);
		$this->assertEquals('2011-04-01 00:00:00', $d->format('Y-m-d H:i:s'));

		$d = new DateTime('2011-03-15 11:15:00');
		$f->increment($d, true);
		$this->assertEquals('2011-02-28 23:59:00', $d->format('Y-m-d H:i:s'));
		date_default_timezone_set($tz);
	}


	/**
	 * @covers Cron\MonthField::increment
	 */
	public function testIncrementsYearAsNeeded()
	{
		$f = new MonthField();
		$d = new DateTime('2011-12-15 00:00:00');
		$f->increment($d);
		$this->assertEquals('2012-01-01 00:00:00', $d->format('Y-m-d H:i:s'));
	}

	/**
	 * @covers Cron\MonthField::increment
	 */
	public function testDecrementsYearAsNeeded()
	{
		$f = new MonthField();
		$d = new DateTime('2011-01-15 00:00:00');
		$f->increment($d, true);
		$this->assertEquals('2010-12-31 23:59:00', $d->format('Y-m-d H:i:s'));
	}
}
