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<?php
namespace Codeception\Lib\Console;
use SebastianBergmann\Comparator\ComparisonFailure;
use SebastianBergmann\Diff\Differ;
/**
* DiffFactory
**/
class DiffFactory
{
/**
* @param ComparisonFailure $failure
* @return string|null
*/
public function createDiff(ComparisonFailure $failure)
{
$diff = $this->getDiff($failure->getExpectedAsString(), $failure->getActualAsString());
if (!$diff) {
return null;
}
return $diff;
}
/**
* @param string $expected
* @param string $actual
* @return string
*/
private function getDiff($expected = '', $actual = '')
{
if (!$actual && !$expected) {
return '';
}
$differ = new Differ('');
return $differ->diff($expected, $actual);
}
}