<?php /** * Bug #21177 "XML_Util::collapseEmptyTags() can return NULL" * * PREG returns NULL when it encounters an error. * In this case, it was encountering PREG_BACKTRACK_LIMIT_ERROR. * * @link https://pear.php.net/bugs/bug.php?id=21177 */ class Bug21177Tests extends AbstractUnitTests { public function getTestCandidate() { $expected = '<id_mytest_yesorno />'; return array( array('<idmytestyesorno></idmytestyesorno>', '<idmytestyesorno />'), array('<idmytestyesorno />', '<idmytestyesorno />'), array('<id_mytest_yesorno></id_mytest_yesorno>', '<id_mytest_yesorno />'), array('<id_mytest_yesorno />', '<id_mytest_yesorno />'), ); } /** * @dataProvider getTestCandidate() */ public function testCollapseEmptyTagsForBug21177($original, $expected) { $this->assertEquals($expected, XML_Util::collapseEmptyTags($original, XML_UTIL_COLLAPSE_ALL), "Failed bugcheck."); } }