class SelectionTest

class SelectionTest extends BrowserTestBase {
    use EntityReferenceFieldCreationTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'views',
        'entity_reference_test',
        'entity_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * An array of node titles, keyed by content type and node ID.
     *
     * @var \Drupal\node\NodeInterface[]
     */
    protected $nodes = [];
    
    /**
     * The handler settings for the entity reference field.
     *
     * @var array
     */
    protected $handlerSettings;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Create content types and nodes.
        $type1 = $this->drupalCreateContentType()
            ->id();
        $type2 = $this->drupalCreateContentType()
            ->id();
        // Add some characters that should be escaped but not double escaped.
        $node1 = $this->drupalCreateNode([
            'type' => $type1,
            'title' => 'Test first node &<>',
        ]);
        $node2 = $this->drupalCreateNode([
            'type' => $type1,
            'title' => 'Test second node &&&',
        ]);
        $node3 = $this->drupalCreateNode([
            'type' => $type2,
            'title' => 'Test third node <span />',
        ]);
        foreach ([
            $node1,
            $node2,
            $node3,
        ] as $node) {
            $this->nodes[$node->id()] = $node;
        }
        // Ensure the bundle to which the field is attached actually exists, or we
        // will get config validation errors.
        entity_test_create_bundle('test_bundle');
        // Create an entity reference field.
        $handler_settings = [
            'view' => [
                'view_name' => 'test_entity_reference',
                'display_name' => 'entity_reference_1',
            ],
        ];
        $this->handlerSettings = $handler_settings;
        $this->createEntityReferenceField('entity_test', 'test_bundle', 'test_field', $this->randomString(), 'node', 'views', $handler_settings);
    }
    
    /**
     * Tests that the Views selection handles the views output properly.
     */
    public function testAutocompleteOutput() : void {
        // Reset any internal static caching.
        \Drupal::service('entity_type.manager')->getStorage('node')
            ->resetCache();
        $view = Views::getView('test_entity_reference');
        $view->setDisplay();
        // Enable the display of the 'type' field so we can test that the output
        // does not contain only the entity label.
        $fields = $view->displayHandlers
            ->get('entity_reference_1')
            ->getOption('fields');
        $fields['type']['exclude'] = FALSE;
        $view->displayHandlers
            ->get('entity_reference_1')
            ->setOption('fields', $fields);
        $view->save();
        // Prepare the selection settings key needed by the entity reference
        // autocomplete route.
        $target_type = 'node';
        $selection_handler = 'views';
        $selection_settings = $this->handlerSettings;
        $selection_settings_key = Crypt::hmacBase64(serialize($selection_settings) . $target_type . $selection_handler, Settings::getHashSalt());
        \Drupal::keyValue('entity_autocomplete')->set($selection_settings_key, $selection_settings);
        $result = Json::decode($this->drupalGet('entity_reference_autocomplete/' . $target_type . '/' . $selection_handler . '/' . $selection_settings_key, [
            'query' => [
                'q' => 't',
            ],
        ]));
        $expected = [
            0 => [
                'value' => $this->nodes[1]
                    ->bundle() . ': ' . $this->nodes[1]
                    ->label() . ' (' . $this->nodes[1]
                    ->id() . ')',
                'label' => '<span class="views-field views-field-type"><span class="field-content">' . $this->nodes[1]
                    ->bundle() . '</span></span>: <span class="views-field views-field-title"><span class="field-content">' . Html::escape($this->nodes[1]
                    ->label()) . '</span></span>',
            ],
            1 => [
                'value' => $this->nodes[2]
                    ->bundle() . ': ' . $this->nodes[2]
                    ->label() . ' (' . $this->nodes[2]
                    ->id() . ')',
                'label' => '<span class="views-field views-field-type"><span class="field-content">' . $this->nodes[2]
                    ->bundle() . '</span></span>: <span class="views-field views-field-title"><span class="field-content">' . Html::escape($this->nodes[2]
                    ->label()) . '</span></span>',
            ],
            2 => [
                'value' => $this->nodes[3]
                    ->bundle() . ': ' . $this->nodes[3]
                    ->label() . ' (' . $this->nodes[3]
                    ->id() . ')',
                'label' => '<span class="views-field views-field-type"><span class="field-content">' . $this->nodes[3]
                    ->bundle() . '</span></span>: <span class="views-field views-field-title"><span class="field-content">' . Html::escape($this->nodes[3]
                    ->label()) . '</span></span>',
            ],
        ];
        $this->assertEquals($expected, $result, 'The autocomplete result of the Views entity reference selection handler contains the proper output.');
    }

}