protected function FieldWebTest::xpathContent

Performs an xpath search on a certain content.

The search is relative to the root element of the $content variable.

Parameters

string $content: The html to parse.

string $xpath: The xpath string to use in the search.

array $arguments: Some arguments for the xpath.

Return value

array|false The return value of the xpath search. For details on the xpath string format and return values see the SimpleXML documentation, http://php.net/manual/function.simplexml-element-xpath.php.

File

core/modules/views/tests/src/Functional/Handler/FieldWebTest.php, line 204

Class

FieldWebTest

Tests fields from within a UI.

Namespace

Code

protected function xpathContent($content, $xpath, array $arguments = []) {
  if ($elements = $this
    ->parseContent($content)) {
    $xpath = $this
      ->assertSession()
      ->buildXPathQuery($xpath, $arguments);
    $result = $elements
      ->xpath($xpath);

    // Some combinations of PHP / libxml versions return an empty array
    // instead of the documented FALSE. Forcefully convert any falsish values
    // to an empty array to allow foreach(...) constructions.
    return $result ? $result : [];
  }
  else {
    return FALSE;
  }
}