function TaxonomyTermFunctionTestCase::testTaxonomyVocabularyTree in Drupal 7

Test a taxonomy with terms that have multiple parents of different depths.

File

modules/taxonomy/taxonomy.test, line 431

Tests for taxonomy.module.

Class

TaxonomyTermFunctionTestCase

Unit tests for taxonomy term functions.

Code

function testTaxonomyVocabularyTree() {

  // Create a new vocabulary with 6 terms.
  $vocabulary = $this
    ->createVocabulary();
  $term = array();
  for ($i = 0; $i < 6; $i++) {
    $term[$i] = $this
      ->createTerm($vocabulary);
  }

  // $term[2] is a child of 1 and 5.
  $term[2]->parent = array(
    $term[1]->tid,
    $term[5]->tid,
  );
  taxonomy_term_save($term[2]);

  // $term[3] is a child of 2.
  $term[3]->parent = array(
    $term[2]->tid,
  );
  taxonomy_term_save($term[3]);

  // $term[5] is a child of 4.
  $term[5]->parent = array(
    $term[4]->tid,
  );
  taxonomy_term_save($term[5]);

  /**
   * Expected tree:
   * term[0] | depth: 0
   * term[1] | depth: 0
   * -- term[2] | depth: 1
   * ---- term[3] | depth: 2
   * term[4] | depth: 0
   * -- term[5] | depth: 1
   * ---- term[2] | depth: 2
   * ------ term[3] | depth: 3
   */

  // Count $term[1] parents with $max_depth = 1.
  $tree = taxonomy_get_tree($vocabulary->vid, $term[1]->tid, 1);
  $this
    ->assertEqual(1, count($tree), 'We have one parent with depth 1.');

  // Count all vocabulary tree elements.
  $tree = taxonomy_get_tree($vocabulary->vid);
  $this
    ->assertEqual(8, count($tree), 'We have all vocabulary tree elements.');

  // Count elements in every tree depth.
  foreach ($tree as $element) {
    if (!isset($depth_count[$element->depth])) {
      $depth_count[$element->depth] = 0;
    }
    $depth_count[$element->depth]++;
  }
  $this
    ->assertEqual(3, $depth_count[0], 'Three elements in taxonomy tree depth 0.');
  $this
    ->assertEqual(2, $depth_count[1], 'Two elements in taxonomy tree depth 1.');
  $this
    ->assertEqual(2, $depth_count[2], 'Two elements in taxonomy tree depth 2.');
  $this
    ->assertEqual(1, $depth_count[3], 'One element in taxonomy tree depth 3.');
}