class RelationshipTest

class RelationshipTest extends RelationshipJoinTestBase {
    use UserCreationTrait;
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_view',
    ];
    
    /**
     * Maps between the key in the expected result and the query result.
     *
     * @var array
     */
    protected $columnMap = [
        'views_test_data_name' => 'name',
        'users_field_data_views_test_data_uid' => 'uid',
    ];
    
    /**
     * Tests the query result of a view with a relationship.
     */
    public function testRelationshipQuery() : void {
        $connection = Database::getConnection();
        // Set the first entry to have the admin as author.
        $connection->update('views_test_data')
            ->fields([
            'uid' => 1,
        ])
            ->condition('id', 1)
            ->execute();
        $connection->update('views_test_data')
            ->fields([
            'uid' => 2,
        ])
            ->condition('id', 1, '<>')
            ->execute();
        $view = Views::getView('test_view');
        $view->setDisplay();
        $view->displayHandlers
            ->get('default')
            ->overrideOption('relationships', [
            'uid' => [
                'id' => 'uid',
                'table' => 'views_test_data',
                'field' => 'uid',
            ],
        ]);
        $view->displayHandlers
            ->get('default')
            ->overrideOption('filters', [
            'uid' => [
                'id' => 'uid',
                'table' => 'users_field_data',
                'field' => 'uid',
                'relationship' => 'uid',
            ],
        ]);
        $fields = $view->displayHandlers
            ->get('default')
            ->getOption('fields');
        $view->displayHandlers
            ->get('default')
            ->overrideOption('fields', $fields + [
            'uid' => [
                'id' => 'uid',
                'table' => 'users_field_data',
                'field' => 'uid',
                'relationship' => 'uid',
            ],
        ]);
        $view->initHandlers();
        // Check for all beatles created by admin.
        $view->filter['uid']->value = [
            1,
        ];
        $this->executeView($view);
        $expected_result = [
            [
                'name' => 'John',
                'uid' => 1,
            ],
        ];
        $this->assertIdenticalResultset($view, $expected_result, $this->columnMap);
        $view->destroy();
        // Check for all beatles created by another user, which so doesn't exist.
        $view->initHandlers();
        $view->filter['uid']->value = [
            3,
        ];
        $this->executeView($view);
        $expected_result = [];
        $this->assertIdenticalResultset($view, $expected_result, $this->columnMap);
        $view->destroy();
        // Set the relationship to required, so only results authored by the admin
        // should return.
        $view->initHandlers();
        $view->relationship['uid']->options['required'] = TRUE;
        $this->executeView($view);
        $expected_result = [
            [
                'name' => 'John',
                'uid' => 1,
            ],
        ];
        $this->assertIdenticalResultset($view, $expected_result, $this->columnMap);
        $view->destroy();
        // Set the relationship to optional should cause to return all beatles.
        $view->initHandlers();
        $view->relationship['uid']->options['required'] = FALSE;
        $this->executeView($view);
        $expected_result = $this->dataSet();
        // Alter the expected result to contain the right uids.
        foreach ($expected_result as &$row) {
            // Only John has an existing author.
            if ($row['name'] == 'John') {
                $row['uid'] = 1;
            }
            else {
                // The LEFT join should set an empty {users}.uid field.
                $row['uid'] = NULL;
            }
        }
        $this->assertIdenticalResultset($view, $expected_result, $this->columnMap);
    }
    
    /**
     * Tests rendering of a view with a relationship.
     */
    public function testRelationshipRender() : void {
        $connection = Database::getConnection();
        $author1 = $this->createUser();
        $connection->update('views_test_data')
            ->fields([
            'uid' => $author1->id(),
        ])
            ->condition('id', 1)
            ->execute();
        $author2 = $this->createUser();
        $connection->update('views_test_data')
            ->fields([
            'uid' => $author2->id(),
        ])
            ->condition('id', 2)
            ->execute();
        // Set uid to non-existing author uid for row 3.
        $connection->update('views_test_data')
            ->fields([
            'uid' => $author2->id() + 123,
        ])
            ->condition('id', 3)
            ->execute();
        $view = Views::getView('test_view');
        // Add a relationship for authors.
        $view->getDisplay()
            ->overrideOption('relationships', [
            'uid' => [
                'id' => 'uid',
                'table' => 'views_test_data',
                'field' => 'uid',
            ],
        ]);
        // Add fields for {views_test_data}.id and author name.
        $view->getDisplay()
            ->overrideOption('fields', [
            'id' => [
                'id' => 'id',
                'table' => 'views_test_data',
                'field' => 'id',
            ],
            'author' => [
                'id' => 'author',
                'table' => 'users_field_data',
                'field' => 'name',
                'relationship' => 'uid',
            ],
        ]);
        // Render the view.
        $output = $view->preview();
        $html = $this->container
            ->get('renderer')
            ->renderRoot($output);
        $this->setRawContent($html);
        // Check that the output contains correct values.
        $xpath = '//div[@class="views-row" and div[@class="views-field views-field-id"]=:id and div[@class="views-field views-field-author"]=:author]';
        $this->assertCount(1, $this->xpath($xpath, [
            ':id' => 1,
            ':author' => $author1->getAccountName(),
        ]));
        $this->assertCount(1, $this->xpath($xpath, [
            ':id' => 2,
            ':author' => $author2->getAccountName(),
        ]));
        $this->assertCount(1, $this->xpath($xpath, [
            ':id' => 3,
            ':author' => '',
        ]));
    }

}