TaxonomyTermFilterDepthTest.php

<?php

namespace Drupal\Tests\taxonomy\Functional\Views;

use Drupal\views\Views;

/**
 * Test the taxonomy term with depth filter.
 *
 * @group taxonomy
 */
class TaxonomyTermFilterDepthTest extends TaxonomyTestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'taxonomy',
        'taxonomy_test_views',
        'views',
        'node',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    public static $testViews = [
        'test_filter_taxonomy_index_tid_depth',
    ];
    
    /**
     * @var \Drupal\taxonomy\TermInterface[]
     */
    protected $terms = [];
    
    /**
     * @var \Drupal\views\ViewExecutable
     */
    protected $view;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE) {
        parent::setUp($import_test_views);
        // Create a hierarchy 3 deep. Note the parent setup function creates two
        // top-level terms w/o children.
        $first = $this->createTerm([
            'name' => 'First',
        ]);
        $second = $this->createTerm([
            'name' => 'Second',
            'parent' => $first->id(),
        ]);
        $third = $this->createTerm([
            'name' => 'Third',
            'parent' => $second->id(),
        ]);
        // Create a node w/o any terms.
        $settings = [
            'type' => 'article',
        ];
        $this->nodes[] = $this->drupalCreateNode($settings);
        // Create a node with only the top level term.
        $settings['field_views_testing_tags'][0]['target_id'] = $first->id();
        $this->nodes[] = $this->drupalCreateNode($settings);
        // Create a node with only the third level term.
        $settings['field_views_testing_tags'][0]['target_id'] = $third->id();
        $this->nodes[] = $this->drupalCreateNode($settings);
        $this->terms[0] = $first;
        $this->terms[1] = $second;
        $this->terms[2] = $third;
        $this->view = Views::getView('test_filter_taxonomy_index_tid_depth');
    }
    
    /**
     * Tests the terms with depth filter.
     */
    public function testTermWithDepthFilter() {
        $column_map = [
            'nid' => 'nid',
        ];
        $assert_method = 'assertIdentical';
        // Default view has an empty value for this filter, so all nodes should be
        // returned.
        $expected = [
            [
                'nid' => 1,
            ],
            [
                'nid' => 2,
            ],
            [
                'nid' => 3,
            ],
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->executeView($this->view);
        $this->assertIdenticalResultsetHelper($this->view, $expected, $column_map, $assert_method);
        // Set filter to search on top-level term, with depth 0.
        $expected = [
            [
                'nid' => 4,
            ],
        ];
        $this->assertTermWithDepthResult($this->terms[0]
            ->id(), 0, $expected);
        // Top-level term, depth 1.
        $expected = [
            [
                'nid' => 4,
            ],
        ];
        $this->assertTermWithDepthResult($this->terms[0]
            ->id(), 0, $expected);
        // Top-level term, depth 2.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($this->terms[0]
            ->id(), 2, $expected);
        // Second-level term, depth 1.
        $expected = [
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($this->terms[1]
            ->id(), 1, $expected);
        // Third-level term, depth 0.
        $expected = [
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($this->terms[2]
            ->id(), 0, $expected);
        // Third-level term, depth 1.
        $expected = [
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($this->terms[2]
            ->id(), 1, $expected);
        // Third-level term, depth -2.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($this->terms[2]
            ->id(), -2, $expected);
    }
    
    /**
     * Changes the tid filter to given term and depth.
     *
     * @param int $tid
     *   The term ID to filter on.
     * @param int $depth
     *   The depth to search.
     * @param array $expected
     *   The expected views result.
     */
    protected function assertTermWithDepthResult($tid, $depth, array $expected) {
        $this->view
            ->destroy();
        $this->view
            ->initDisplay();
        $filters = $this->view->displayHandlers
            ->get('default')
            ->getOption('filters');
        $filters['tid_depth']['depth'] = $depth;
        $filters['tid_depth']['value'] = [
            $tid,
        ];
        $this->view->displayHandlers
            ->get('default')
            ->setOption('filters', $filters);
        $this->executeView($this->view);
        $this->assertIdenticalResultsetHelper($this->view, $expected, [
            'nid' => 'nid',
        ], 'assertIdentical');
    }

}