public function ElementTreeTest::testApplyRecursivelyPreOrder in Little helpers 7.2

Test reading and modifying the element tree.

File

tests/ElementTreeTest.php, line 15

Class

ElementTreeTest

Test the element tree utility functions.

Namespace

Drupal\little_helpers

Code

public function testApplyRecursivelyPreOrder() {
  $test_array = [
    'a' => [
      'a1' => [],
    ],
    'b' => [],
    '#no-element' => 'test',
  ];
  $element_keys = [];
  $count = 0;
  ElementTree::applyRecursively($test_array, function (&$element, $key) use (&$element_keys, &$count) {
    if ($key) {
      $element_keys[] = $key;
    }
    $element['#index'] = $count++;
  });
  $this
    ->assertEqual([
    'a',
    'a1',
    'b',
  ], $element_keys);
  $this
    ->assertEqual([
    'a' => [
      'a1' => [
        '#index' => 2,
      ],
      '#index' => 1,
    ],
    'b' => [
      '#index' => 3,
    ],
    '#no-element' => 'test',
    '#index' => 0,
  ], $test_array);
}