class HandlerFieldFieldTest

class HandlerFieldFieldTest extends KernelTestBase {
    use NodeCreationTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'field',
        'field_test',
        'field_test_views',
        'filter',
        'node',
        'system',
        'text',
        'user',
        'views',
    ];
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_view_fieldapi',
    ];
    
    /**
     * Test field storage.
     *
     * @var \Drupal\field\FieldStorageConfigInterface[]
     */
    protected $fieldStorages = [];
    
    /**
     * Test nodes.
     *
     * @var \Drupal\node\NodeInterface[]
     */
    protected $nodes = [];
    
    /**
     * Tests fields rendering in views.
     */
    public function testFieldRender() {
        $this->installConfig([
            'filter',
        ]);
        $this->installEntitySchema('user');
        $this->installEntitySchema('node');
        NodeType::create([
            'type' => 'page',
        ])->save();
        ViewTestData::createTestViews(static::class, [
            'field_test_views',
        ]);
        // Setup basic fields.
        $this->createFields();
        // Create some nodes.
        $this->nodes = [];
        for ($i = 0; $i < 3; $i++) {
            $values = [
                'type' => 'page',
            ];
            foreach ([
                0,
                1,
                2,
                5,
            ] as $key) {
                $field_storage = $this->fieldStorages[$key];
                $values[$field_storage->getName()][0]['value'] = $this->randomMachineName(8);
            }
            // Add a hidden value for the no-view field.
            $values[$this->fieldStorages[6]
                ->getName()][0]['value'] = 'ssh secret squirrel';
            for ($j = 0; $j < 5; $j++) {
                $values[$this->fieldStorages[3]
                    ->getName()][$j]['value'] = $this->randomMachineName(8);
            }
            // Set this field to be empty.
            $values[$this->fieldStorages[4]
                ->getName()] = [
                [
                    'value' => NULL,
                ],
            ];
            $this->nodes[$i] = $this->createNode($values);
        }
        // Perform actual tests.
        $this->doTestSimpleFieldRender();
        $this->doTestInaccessibleFieldRender();
        $this->doTestFormatterSimpleFieldRender();
        $this->doTestMultipleFieldRender();
    }
    
    /**
     * Tests simple field rendering.
     */
    public function doTestSimpleFieldRender() {
        $view = Views::getView('test_view_fieldapi');
        $this->prepareView($view);
        $view->preview();
        // Tests that the rendered fields match the actual value of the fields.
        for ($i = 0; $i < 3; $i++) {
            for ($key = 0; $key < 2; $key++) {
                $field_name = $this->fieldStorages[$key]
                    ->getName();
                $rendered_field = $view->style_plugin
                    ->getField($i, $field_name);
                $expected_field = $this->nodes[$i]->{$field_name}->value;
                $this->assertEquals($expected_field, $rendered_field);
            }
        }
    }
    
    /**
     * Tests inaccessible field rendering.
     */
    public function doTestInaccessibleFieldRender() {
        $view = Views::getView('test_view_fieldapi');
        $this->prepareView($view);
        $view->preview();
        // Check that the field handler for the hidden field is correctly removed
        // from the display.
        // @see https://www.drupal.org/node/2382931
        $this->assertArrayNotHasKey('field_no_view_access', $view->field);
        // Check that the access-denied field is not visible.
        for ($i = 0; $i < 3; $i++) {
            $field_name = $this->fieldStorages[6]
                ->getName();
            $rendered_field = $view->style_plugin
                ->getField($i, $field_name);
            // Check that a hidden field is not rendered.
            $this->assertNull($rendered_field);
        }
    }
    
    /**
     * Tests that fields with formatters runs as expected.
     */
    public function doTestFormatterSimpleFieldRender() {
        $view = Views::getView('test_view_fieldapi');
        $this->prepareView($view);
        $view->displayHandlers
            ->get('default')->options['fields'][$this->fieldStorages[5]
            ->getName()]['type'] = 'text_trimmed';
        $view->displayHandlers
            ->get('default')->options['fields'][$this->fieldStorages[5]
            ->getName()]['settings'] = [
            'trim_length' => 3,
        ];
        $view->preview();
        // Make sure that the formatter works as expected.
        // @todo Add a specific formatter in #3046722.
        // @see https://www.drupal.org/project/drupal/issues/3046722
        for ($i = 0; $i < 2; $i++) {
            $field_name = $this->fieldStorages[5]
                ->getName();
            $rendered_field = $view->style_plugin
                ->getField($i, $field_name);
            $this->assertEquals(3, strlen(html_entity_decode($rendered_field)));
        }
    }
    
    /**
     * Tests multi-value field rendering.
     */
    public function doTestMultipleFieldRender() {
        $view = Views::getView('test_view_fieldapi');
        $field_name = $this->fieldStorages[3]
            ->getName();
        // Test delta limit.
        $this->prepareView($view);
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
        $view->preview();
        for ($i = 0; $i < 3; $i++) {
            $rendered_field = $view->style_plugin
                ->getField($i, $field_name);
            $items = [];
            $pure_items = $this->nodes[$i]->{$field_name}
                ->getValue();
            $pure_items = array_splice($pure_items, 0, 3);
            foreach ($pure_items as $j => $item) {
                $items[] = $pure_items[$j]['value'];
            }
            // Check that the amount of items is limited.
            $this->assertEquals(implode(', ', $items), $rendered_field);
        }
        // Test that an empty field is rendered without error.
        $view->style_plugin
            ->getField(4, $this->fieldStorages[4]
            ->getName());
        $view->destroy();
        // Test delta limit + offset
        $this->prepareView($view);
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_offset'] = 1;
        $view->preview();
        for ($i = 0; $i < 3; $i++) {
            $rendered_field = $view->style_plugin
                ->getField($i, $field_name);
            $items = [];
            $pure_items = $this->nodes[$i]->{$field_name}
                ->getValue();
            $pure_items = array_splice($pure_items, 1, 3);
            foreach ($pure_items as $j => $item) {
                $items[] = $pure_items[$j]['value'];
            }
            // Check that the amount of items is limited and the offset is correct.
            $this->assertEquals(implode(', ', $items), $rendered_field);
        }
        $view->destroy();
        // Test delta limit + reverse.
        $this->prepareView($view);
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_offset'] = 0;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_reversed'] = TRUE;
        $view->preview();
        for ($i = 0; $i < 3; $i++) {
            $rendered_field = $view->style_plugin
                ->getField($i, $field_name);
            $items = [];
            $pure_items = $this->nodes[$i]->{$field_name}
                ->getValue();
            array_splice($pure_items, 0, -3);
            $pure_items = array_reverse($pure_items);
            foreach ($pure_items as $j => $item) {
                $items[] = $pure_items[$j]['value'];
            }
            // Check that the amount of items is limited and they are reversed.
            $this->assertEquals(implode(', ', $items), $rendered_field);
        }
        $view->destroy();
        // Test delta first last.
        $this->prepareView($view);
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_limit'] = 0;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_first_last'] = TRUE;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_reversed'] = FALSE;
        $view->preview();
        for ($i = 0; $i < 3; $i++) {
            $rendered_field = $view->style_plugin
                ->getField($i, $field_name);
            $items = [];
            $pure_items = $this->nodes[$i]->{$field_name}
                ->getValue();
            $items[] = $pure_items[0]['value'];
            $items[] = $pure_items[4]['value'];
            // Check that items are limited to first and last.
            $this->assertEquals(implode(', ', $items), $rendered_field);
        }
        $view->destroy();
        // Test delta limit + custom separator.
        $this->prepareView($view);
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_first_last'] = FALSE;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['separator'] = ':';
        $view->preview();
        for ($i = 0; $i < 3; $i++) {
            $rendered_field = $view->style_plugin
                ->getField($i, $field_name);
            $items = [];
            $pure_items = $this->nodes[$i]->{$field_name}
                ->getValue();
            $pure_items = array_splice($pure_items, 0, 3);
            foreach ($pure_items as $j => $item) {
                $items[] = $pure_items[$j]['value'];
            }
            // Check that the amount of items is limited and the custom separator is
            // correct.
            $this->assertEquals(implode(':', $items), $rendered_field);
        }
        $view->destroy();
        // Test separator with HTML, ensure it is escaped.
        $this->prepareView($view);
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
        $view->displayHandlers
            ->get('default')->options['fields'][$field_name]['separator'] = '<h2>test</h2>';
        $view->preview();
        for ($i = 0; $i < 3; $i++) {
            $rendered_field = $view->style_plugin
                ->getField($i, $field_name);
            $items = [];
            $pure_items = $this->nodes[$i]->{$field_name}
                ->getValue();
            $pure_items = array_splice($pure_items, 0, 3);
            foreach ($pure_items as $j => $item) {
                $items[] = $pure_items[$j]['value'];
            }
            // Check that the custom separator is correctly escaped.
            $this->assertEquals(implode('<h2>test</h2>', $items), $rendered_field);
        }
    }
    
    /**
     * Sets up the testing view with random field data.
     *
     * @param \Drupal\views\ViewExecutable $view
     *   The view to add field data to.
     */
    protected function prepareView(ViewExecutable $view) {
        $view->storage
            ->invalidateCaches();
        $view->initDisplay();
        foreach ($this->fieldStorages as $field_storage) {
            $field_name = $field_storage->getName();
            $view->display_handler->options['fields'][$field_name]['id'] = $field_name;
            $view->display_handler->options['fields'][$field_name]['table'] = 'node__' . $field_name;
            $view->display_handler->options['fields'][$field_name]['field'] = $field_name;
        }
    }
    
    /**
     * Creates the testing fields.
     */
    protected function createFields() {
        $fields_data = [
            [
                'field_name' => 'field_name_0',
                'type' => 'string',
            ],
            [
                'field_name' => 'field_name_1',
                'type' => 'string',
            ],
            [
                'field_name' => 'field_name_2',
                'type' => 'string',
            ],
            // Field with cardinality > 1.
[
                'field_name' => 'field_name_3',
                'type' => 'string',
                'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
            ],
            // Field that will have no value.
[
                'field_name' => 'field_name_4',
                'type' => 'string',
                'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
            ],
            // Text field.
[
                'field_name' => 'field_name_5',
                'type' => 'text',
            ],
            // Text field with access control.
            // @see field_test_entity_field_access()
[
                'field_name' => 'field_no_view_access',
                'type' => 'text',
            ],
        ];
        foreach ($fields_data as $field_data) {
            $field_data += [
                'entity_type' => 'node',
            ];
            $field_storage = FieldStorageConfig::create($field_data);
            $field_storage->save();
            $this->fieldStorages[] = $field_storage;
            FieldConfig::create([
                'field_storage' => $field_storage,
                'bundle' => 'page',
            ])->save();
        }
    }

}