<?php

/**
 * Test for Entity Reference taxonomy integration.
 */
class EntityReferenceTaxonomyTestCase extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Entity Reference Taxonomy',
      'description' => 'Tests nodes with reference to terms as indexed.',
      'group' => 'Entity Reference',
    );
  }

  public function setUp() {
    parent::setUp('entityreference', 'taxonomy');

    // Create an entity reference field.
    $field = array(
      'entity_types' => array('node'),
      'settings' => array(
        'handler' => 'base',
        'target_type' => 'taxonomy_term',
        'handler_settings' => array(
          'target_bundles' => array(),
        ),
      ),
      'field_name' => 'field_entityreference_term',
      'type' => 'entityreference',
    );
    $field = field_create_field($field);
    $instance = array(
      'field_name' => 'field_entityreference_term',
      'bundle' => 'article',
      'entity_type' => 'node',
    );

    // Enable the taxonomy-index behavior.
    $instance['settings']['behaviors']['taxonomy-index']['status'] = TRUE;
    field_create_instance($instance);

    // Create a term reference field.
    $field = array(
      'translatable' => FALSE,
      'entity_types' => array('node'),
      'settings' => array(
        'allowed_values' => array(
          array(
            'vocabulary' => 'terms',
            'parent' => 0,
          ),
        ),
      ),
      'field_name' => 'field_taxonomy_term',
      'type' => 'taxonomy_term_reference',
    );
    $field = field_create_field($field);
    $instance = array(
      'field_name' => 'field_taxonomy_term',
      'bundle' => 'article',
      'entity_type' => 'node',
    );
    field_create_instance($instance);

    // Create a terms vocobulary.
    $vocabulary = new stdClass();
    $vocabulary->name = 'Terms';
    $vocabulary->machine_name = 'terms';
    taxonomy_vocabulary_save($vocabulary);

    // Create term.
    for ($i = 1; $i <= 2; $i++) {
      $term = new stdClass();
      $term->name = "term $i";
      $term->vid = 1;
      taxonomy_term_save($term);
    }
  }

  /**
   * Test referencing a term using entity reference field.
   */
  public function testNodeIndex() {
    // Asert node insert with reference to term.
    $settings = array();
    $settings['type'] = 'article';
    $settings['field_entityreference_term'][LANGUAGE_NONE][0]['target_id'] = 1;
    $node = $this->drupalCreateNode($settings);

    $this->assertEqual(taxonomy_select_nodes(1), array($node->nid));

    // Asert node update with reference to term.
    node_save($node);
    $this->assertEqual(taxonomy_select_nodes(1), array($node->nid));

    // Assert node update with reference to term and taxonomy reference to
    // another term.
    $wrapper = entity_metadata_wrapper('node', $node);
    $wrapper->field_taxonomy_term->set(2);
    $wrapper->save();

    $this->assertEqual(taxonomy_select_nodes(1), array($node->nid));
    $this->assertEqual(taxonomy_select_nodes(2), array($node->nid));

    // Assert node update with reference to term and taxonomy reference to
    // same term.
    $wrapper->field_taxonomy_term->set(1);
    $wrapper->save();
    $this->assertEqual(taxonomy_select_nodes(1), array($node->nid));

    $wrapper->delete();
    $this->assertFalse(taxonomy_select_nodes(1));
  }

  /**
   * Add a second ER field from node/article to taxonomy.
   *
   * This should not cause {taxonomy_index} to receive duplicate entries.
   */
  protected function setupForIndexDuplicates() {
    // Create an entity reference field.
    $field = array(
      'entity_types' => array('node'),
      'settings' => array(
        'handler' => 'base',
        'target_type' => 'taxonomy_term',
        'handler_settings' => array(
          'target_bundles' => array(),
        ),
      ),
      'field_name' => 'field_entityreference_term2',
      'type' => 'entityreference',
    );
    $field = field_create_field($field);
    $instance = array(
      'field_name' => 'field_entityreference_term2',
      'bundle' => 'article',
      'entity_type' => 'node',
    );

    // Enable the taxonomy-index behavior.
    $instance['settings']['behaviors']['taxonomy-index']['status'] = TRUE;
    field_create_instance($instance);
  }

  /**
   * Make sure the index only contains one entry for a given node->term
   * reference, even when multiple ER fields link from the node bundle to terms.
   */
  public function testIndexDuplicates() {
    // Extra setup for this test: add another ER field on this content type.
    $this->setupForIndexDuplicates();

    // Assert node insert with reference to term in first field.
    $tid = 1;
    $settings = array();
    $settings['type'] = 'article';
    $settings['field_entityreference_term'][LANGUAGE_NONE][0]['target_id'] = $tid;
    $node = $this->drupalCreateNode($settings);

    $this->assertEqual(taxonomy_select_nodes($tid), array($node->nid));
  }
}