class TaxonomyTermArgumentDepthTest

class TaxonomyTermArgumentDepthTest extends TaxonomyTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'taxonomy',
        'taxonomy_test_views',
        'views',
        'node',
    ];
    
    /**
     * Views IDs used by this test.
     *
     * @var string[]
     */
    public static $testViews = [
        'test_argument_taxonomy_index_tid_depth',
    ];
    
    /**
     * The terms used in the test.
     *
     * @var \Drupal\taxonomy\TermInterface[]
     */
    protected $terms = [];
    
    /**
     * The view executable used in the test.
     *
     * @var \Drupal\views\ViewExecutable
     */
    protected $view;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE) : void {
        parent::setUp($import_test_views);
        // Install node_access schema in order to successfully re-save nodes.
        $this->installSchema('node', [
            'node_access',
        ]);
        // Create a hierarchy 5 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(),
        ]);
        $fourth = $this->createTerm([
            'name' => 'Fourth',
            'parent' => $third->id(),
        ]);
        $fifth = $this->createTerm([
            'name' => 'Fifth',
            'parent' => $fourth->id(),
        ]);
        $this->terms = [
            $first,
            $second,
            $third,
            $fourth,
            $fifth,
        ];
        // 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);
        // Create a node with only the fifth level term.
        $settings['field_views_testing_tags'][0]['target_id'] = $fifth->id();
        $this->nodes[] = $this->drupalCreateNode($settings);
        $this->view = Views::getView(self::$testViews[0]);
        // Fix the created date to match the expectations of the order by in the
        // view. Node 1 should be the most recent node and node 6 should be the
        // oldest.
        $time = \Drupal::time();
        foreach ($this->nodes as $i => $node) {
            $node->setCreatedTime($time->getRequestTime() - $i)
                ->save();
        }
    }
    
    /**
     * Tests the terms with depth filter.
     */
    public function testTermWithDepthFilter() : void {
        // 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,
            ],
            [
                'nid' => 6,
            ],
        ];
        $this->executeView($this->view);
        $this->assertIdenticalResultsetHelper($this->view, $expected, [
            'nid' => 'nid',
        ], 'assertIdentical');
        // Set filter to search on top-level term, with depth 0.
        $expected = [
            [
                'nid' => 4,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[0]
            ->id(), 0);
        // Top-level term, depth 1.
        $expected = [
            [
                'nid' => 4,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[0]
            ->id(), 1);
        // Top-level term, depth 2.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[0]
            ->id(), 2);
        // Top-level term, depth 9.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
            [
                'nid' => 6,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[0]
            ->id(), 9);
        // Second-level term, depth 1.
        $expected = [
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[1]
            ->id(), 1);
        // Third-level term, depth 0.
        $expected = [
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[2]
            ->id(), 0);
        // Third-level term, depth 1.
        $expected = [
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[2]
            ->id(), 1);
        // Third-level term, depth -2.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[2]
            ->id(), -2);
        // Third-level term, depth -9.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[2]
            ->id(), -9);
        // Fifth-level term, depth -9.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
            [
                'nid' => 6,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[4]
            ->id(), -9);
        // Third-level term, depth -1.
        $expected = [
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[2]
            ->id(), -1);
        // Third-level and second-level term, depth -1, using a plus sign.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[2]
            ->id() . '+' . $this->terms[1]
            ->id(), -1, TRUE);
        // Third-level and second-level term, depth -1, using a comma. Note that due
        // to performance the "and" meaning of comma is not supported.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[2]
            ->id() . ',' . $this->terms[1]
            ->id(), -1, TRUE);
        // Top-level term and second level term, depth 1, using a plus sign.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[0]
            ->id() . '+' . $this->terms[1]
            ->id(), 1, TRUE);
        // Top-level term and second level term, depth 1, using a comma. Note that
        // due to performance the "and" meaning of comma is not supported.
        $expected = [
            [
                'nid' => 4,
            ],
            [
                'nid' => 5,
            ],
        ];
        $this->assertTermWithDepthResult($expected, $this->terms[0]
            ->id() . ',' . $this->terms[1]
            ->id(), 1, TRUE);
    }
    
    /**
     * Asserts the result of the view for the given arguments.
     *
     * @param array $expected
     *   The expected views result.
     * @param int|string $tid
     *   The term ID or IDs to use as an argument.
     * @param int $depth
     *   The depth to search.
     * @param bool $break_phrase
     *   Whether to break the argument up into multiple terms.
     *
     * @internal
     */
    protected function assertTermWithDepthResult(array $expected, $tid, int $depth, bool $break_phrase = FALSE) : void {
        $this->view
            ->destroy();
        $this->view
            ->initDisplay();
        $arguments = $this->view->displayHandlers
            ->get('default')
            ->getOption('arguments');
        $arguments['term_node_tid_depth']['depth'] = $depth;
        $arguments['term_node_tid_depth']['break_phrase'] = $break_phrase;
        $this->view->displayHandlers
            ->get('default')
            ->setOption('arguments', $arguments);
        $this->executeView($this->view, [
            $tid,
        ]);
        $this->assertIdenticalResultsetHelper($this->view, $expected, [
            'nid' => 'nid',
        ], 'assertIdentical');
    }

}