DateFuTest.php

<?php

/*
phpunit DateFuTest.php
*/

error_reporting(E_ALL);

require 'PHPUnit/Autoload.php';

/**
 * Method names need improvement
 */
class DateFu
{
	public function getEndTime($startTime, $period)
	{
		return $startTime + $period;
	}

	/**
	 * @param $time      integer Time in seconds
	 * @param $startTime integer Time period commences 
	 */
	public function isBetween($time, $startTime, $period)
	{
		$endTime = $this->getEndTime($startTime, $period);

		if ($time >= $startTime && $time < $endTime) {
			return true;
		}

		return false;
	}

	/**
	 * Calculates if a time is within a promotional period
	 *
	 * @param $currentTime                integer Time in seconds
	 * @param $promotionalPeriodStartTime integer Start time of promotional period in seconds
	 * @param $dayOfPromotion             integer Day of promotion
	 */
	public function inPromotionalPeriod($currentTime, $promotionalPeriodStartTime, $dayOfPromotion)
	{
		//todo period shouldn't be hardcoded
		$period = 86400;
		$startTime = $promotionalPeriodStartTime + ($dayOfPromotion * $period);

		if ($this->isBetween($currentTime, $startTime, $period)) {
			return true;
		}

		return false;
	}
}

class DateFuTest extends PHPUnit_Framework_TestCase
{
	protected $dateFu;
	protected $period;
	protected $promotionalStartTime;

	protected function setUp()
	{
		$this->dateFu = new DateFu();
		$this->period = 60 * 60 * 24;
		$this->promotionalStartTime = mktime(12, 0, 0, 12, 13, 2010); // 13/12/2010 12:00:00
	}

	public function testInPromotionalPeriodDay1()
	{
		$time = mktime(12, 1, 0, 12, 13, 2010); // 13/12/2010 12:01:00
		$dayOfPromotion = 0;

		$result = $this->dateFu->inPromotionalPeriod($time, $this->promotionalStartTime, $dayOfPromotion);

		$this->assertTrue($result);
	}

	public function testInPromotionalPeriodDay4()
	{
		$time = mktime(11, 59, 59, 12, 17, 2010); // 17/12/2010 11:59:59
		$dayOfPromotion = 3;

		$result = $this->dateFu->inPromotionalPeriod($time, $this->promotionalStartTime, $dayOfPromotion);

		$this->assertTrue($result);
	}

	public function testNotInPromotionalPeriodDay5()
	{
		$time = mktime(13, 00, 00, 12, 19, 2010); // 19/12/2010 11:59:59
		$dayOfPromotion = 5;

		$result = $this->dateFu->inPromotionalPeriod($time, $this->promotionalStartTime, $dayOfPromotion);

		$this->assertFalse($result);
	}

	public function testTimeBetweenPeriodReturnsTrue()
	{
		$time = mktime(12, 59, 0, 12, 9, 2010); // 9/12/2010 12:59:00
		$startTime = mktime(13, 0, 0, 12, 8, 2010); // 8/12/2010 13:00:00
		$result = $this->dateFu->isBetween($time, $startTime, $this->period);

		$this->assertTrue($result, sprintf('%s is between %s - %s', date('r', $time), date('r', $startTime), date('r', $this->dateFu->getEndTime($startTime, $this->period)))); 
	}

	public function testTimeEarlierThanPeriodReturnsFalse()
	{
		$time = mktime(12, 59, 0, 12, 7, 2010); // 7/12/2010 12:59:00
		$startTime = mktime(13, 0, 0, 12, 8, 2010); // 8/12/2010 13:00:00
		$result = $this->dateFu->isBetween($time, $startTime, $this->period);

		$this->assertFalse($result, sprintf('%s is between %s - %s', date('r', $time), date('r', $startTime), date('r', $this->dateFu->getEndTime($startTime, $this->period)))); 
	}

	public function testTimeLaterThanPeriodReturnsFalse()
	{
		$time = mktime(12, 59, 0, 12, 20, 2010); // 20/12/2010 12:59:00
		$startTime = mktime(13, 0, 0, 12, 8, 2010); // 8/12/2010 13:00:00
		$result = $this->dateFu->isBetween($time, $startTime, $this->period);

		$this->assertFalse($result, sprintf('%s is between %s - %s', date('r', $time), date('r', $startTime), date('r', $this->dateFu->getEndTime($startTime, $this->period)))); 
	}

	public function testTimeExactlyOneSecondBeforePeriodReturnsFalse()
	{
		$time = mktime(12, 59, 59, 12, 8, 2010); // 8/12/2010 12:59:59
		$startTime = mktime(13, 0, 0, 12, 8, 2010); // 8/12/2010 13:00:00
		$result = $this->dateFu->isBetween($time, $startTime, $this->period);

		$this->assertFalse($result, sprintf('%s is between %s - %s', date('r', $time), date('r', $startTime), date('r', $this->dateFu->getEndTime($startTime, $this->period)))); 
	}

	public function testTimeExactlyOnEndTimeReturnsFalse()
	{
		$time = mktime(13, 00, 0, 12, 9, 2010); // 9/12/2010 13:00:00
		$startTime = mktime(13, 0, 0, 12, 8, 2010); // 8/12/2010 13:00:00
		$result = $this->dateFu->isBetween($time, $startTime, $this->period);

		$this->assertFalse($result, sprintf('%s is between %s - %s', date('r', $time), date('r', $startTime), date('r', $this->dateFu->getEndTime($startTime, $this->period)))); 
	}
}