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<?php

namespace Drupal\Tests\taxonomy\Functional;

use Drupal\taxonomy\Entity\Term;

/**
 * Tests the loading of multiple taxonomy terms at once.
 *
 * @group taxonomy
 */
class LoadMultipleTest extends TaxonomyTestBase {

  protected function setUp() {
    parent::setUp();
    $this->drupalLogin($this->drupalCreateUser(['administer taxonomy']));
  }

  /**
   * Create a vocabulary and some taxonomy terms, ensuring they're loaded
   * correctly using entity_load_multiple().
   */
  public function testTaxonomyTermMultipleLoad() {
    // Create a vocabulary.
    $vocabulary = $this->createVocabulary();

    // Create five terms in the vocabulary.
    $i = 0;
    while ($i < 5) {
      $i++;
      $this->createTerm($vocabulary);
    }
    // Load the terms from the vocabulary.
    $terms = entity_load_multiple_by_properties('taxonomy_term', ['vid' => $vocabulary->id()]);
    $count = count($terms);
    $this->assertEqual($count, 5, format_string('Correct number of terms were loaded. @count terms.', ['@count' => $count]));

    // Load the same terms again by tid.
    $terms2 = Term::loadMultiple(array_keys($terms));
    $this->assertEqual($count, count($terms2), 'Five terms were loaded by tid.');
    $this->assertEqual($terms, $terms2, 'Both arrays contain the same terms.');

    // Remove one term from the array, then delete it.
    $deleted = array_shift($terms2);
    $deleted->delete();
    $deleted_term = Term::load($deleted->id());
    $this->assertFalse($deleted_term);

    // Load terms from the vocabulary by vid.
    $terms3 = entity_load_multiple_by_properties('taxonomy_term', ['vid' => $vocabulary->id()]);
    $this->assertEqual(count($terms3), 4, 'Correct number of terms were loaded.');
    $this->assertFalse(isset($terms3[$deleted->id()]));

    // Create a single term and load it by name.
    $term = $this->createTerm($vocabulary);
    $loaded_terms = entity_load_multiple_by_properties('taxonomy_term', ['name' => $term->getName()]);
    $this->assertEqual(count($loaded_terms), 1, 'One term was loaded.');
    $loaded_term = reset($loaded_terms);
    $this->assertEqual($term->id(), $loaded_term->id(), 'Term loaded by name successfully.');
  }

}