class ImageFieldValidateTest

class ImageFieldValidateTest extends ImageFieldTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests the validation message is displayed only once for ajax uploads.
     */
    public function testAJAXValidationMessage() {
        $field_name = strtolower($this->randomMachineName());
        $this->createImageField($field_name, 'article', [
            'cardinality' => -1,
        ]);
        $this->drupalGet('node/add/article');
        
        /** @var \Drupal\file\FileInterface[] $text_files */
        $text_files = $this->drupalGetTestFiles('text');
        $text_file = reset($text_files);
        $field = $this->getSession()
            ->getPage()
            ->findField('files[' . $field_name . '_0][]');
        $field->attachFile($this->container
            ->get('file_system')
            ->realpath($text_file->uri));
        $this->assertSession()
            ->waitForElement('css', '.messages--error');
        // Verify that Ajax validation messages are displayed only once.
        $this->assertSession()
            ->elementsCount('xpath', '//div[contains(@class, "messages--error")]', 1);
    }
    
    /**
     * Tests that image field validation works with other form submit handlers.
     */
    public function testFriendlyAjaxValidation() {
        // Add a custom field to the Article content type that contains an AJAX
        // handler on a select field.
        $field_storage = FieldStorageConfig::create([
            'field_name' => 'field_dummy_select',
            'type' => 'image_module_test_dummy_ajax',
            'entity_type' => 'node',
            'cardinality' => 1,
        ]);
        $field_storage->save();
        $field = FieldConfig::create([
            'field_storage' => $field_storage,
            'entity_type' => 'node',
            'bundle' => 'article',
            'field_name' => 'field_dummy_select',
            'label' => 'Dummy select',
        ])->save();
        \Drupal::entityTypeManager()->getStorage('entity_form_display')
            ->load('node.article.default')
            ->setComponent('field_dummy_select', [
            'type' => 'image_module_test_dummy_ajax_widget',
            'weight' => 1,
        ])
            ->save();
        // Then, add an image field.
        $this->createImageField('field_dummy_image', 'article');
        // Open an article and trigger the AJAX handler.
        $this->drupalGet('node/add/article');
        $id = $this->getSession()
            ->getPage()
            ->find('css', '[name="form_build_id"]')
            ->getValue();
        $field = $this->getSession()
            ->getPage()
            ->findField('field_dummy_select[select_widget]');
        $field->setValue('bam');
        // Make sure that the operation did not end with an exception.
        $this->assertSession()
            ->waitForElement('css', "[name='form_build_id']:not([value='{$id}'])");
    }

}