PhpSpreadsheet/unitTests/Classes/PHPExcel/ReferenceHelperTest.php

<?php


class ReferenceHelperTest extends PHPUnit_Framework_TestCase
{

    public function setUp()
    {
        if (!defined('PHPEXCEL_ROOT')) {
            define('PHPEXCEL_ROOT', APPLICATION_PATH . '/');
        }
        require_once(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
    }

    public function testColumnSort()
    {
        $columnBase = $columnExpectedResult = array(
            'A','B','Z',
            'AA','AB','AZ',
            'BA','BB','BZ',
            'ZA','ZB','ZZ',
            'AAA','AAB','AAZ',
            'ABA','ABB','ABZ',
            'AZA','AZB','AZZ',
            'BAA','BAB','BAZ',
            'BBA','BBB','BBZ',
            'BZA','BZB','BZZ'
        );
        shuffle($columnBase);
        usort($columnBase, array('PHPExcel_ReferenceHelper','columnSort'));
        foreach ($columnBase as $key => $value) {
            $this->assertEquals($columnExpectedResult[$key], $value);
        }
    }

    public function testColumnReverseSort()
    {
        $columnBase = $columnExpectedResult = array(
            'A','B','Z',
            'AA','AB','AZ',
            'BA','BB','BZ',
            'ZA','ZB','ZZ',
            'AAA','AAB','AAZ',
            'ABA','ABB','ABZ',
            'AZA','AZB','AZZ',
            'BAA','BAB','BAZ',
            'BBA','BBB','BBZ',
            'BZA','BZB','BZZ'
        );
        shuffle($columnBase);
        $columnExpectedResult = array_reverse($columnExpectedResult);
        usort($columnBase, array('PHPExcel_ReferenceHelper','columnReverseSort'));
        foreach ($columnBase as $key => $value) {
            $this->assertEquals($columnExpectedResult[$key], $value);
        }
    }
}