/** @test */
public function xpathShouldThrowExceptionWithoutOwnerDocument()
{
$element = new DOMElement('foo');
try {
$element->xpath('//foo');
} catch (\BadMethodCallException $e) {
$this->assertSame('cannot xpath on element without an owner document', $e->getMessage());
} catch (\Exception $e) {
$this->fail($e->getMessage());
}
}
/**
* A lookahead to find sibling elements with similar names.
*
* @param DOMElement $node the node in charge.
* @param string $prefix the element prefix
*
* @return \DOMNodeList
*/
private function getEqualNodes(DOMElement $node, $prefix = null)
{
$name = $this->prefixKey($node->nodeName, $prefix);
return $node->xpath(sprintf(".|following-sibling::*[name() = '%s']|preceding-sibling::*[name() = '%s']", $name, $name));
}
