trait TaxonomyTestTrait

trait TaxonomyTestTrait {
  
  /**
   * Returns a new vocabulary with random properties.
   *
   * @param array $values
   *   (optional) Default values for the Vocabulary::create() method.
   *
   * @return \Drupal\taxonomy\VocabularyInterface
   *   A vocabulary used for testing.
   */
  protected function createVocabulary(array $values = []) {
    $values += [
      'name' => $this->randomMachineName(),
      'description' => $this->randomMachineName(),
      'vid' => $this->randomMachineName(),
      'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
      'weight' => mt_rand(0, 10),
    ];
    $vocabulary = Vocabulary::create($values);
    $vocabulary->save();
    return $vocabulary;
  }
  
  /**
   * Returns a new term with random properties given a vocabulary.
   *
   * @param \Drupal\taxonomy\VocabularyInterface $vocabulary
   *   The vocabulary object.
   * @param array $values
   *   (optional) An array of values to set, keyed by property name.
   *
   * @return \Drupal\taxonomy\TermInterface
   *   The new taxonomy term object.
   */
  protected function createTerm(VocabularyInterface $vocabulary, $values = []) {
    $term = Term::create($values + [
      'name' => $this->randomMachineName(),
      'description' => [
        'value' => $this->randomMachineName(),
        // Use the fallback text format.
'format' => filter_fallback_format(),
      ],
      'vid' => $vocabulary->id(),
      'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
    ]);
    $term->save();
    return $term;
  }
  
  /**
   * Creates a new revision for a given taxonomy term.
   *
   * @param \Drupal\taxonomy\TermInterface $term
   *   A taxonomy term object.
   *
   * @return \Drupal\taxonomy\TermInterface
   *   The new taxonomy term object.
   */
  protected function createTaxonomyTermRevision(TermInterface $term) {
    $term->set('name', $this->randomMachineName());
    $term->setNewRevision();
    $term->save();
    return $term;
  }

}