$this->assertRaw('<title>Edit Article english_title | Drupal</title>');
$edit = [
'langcode[0][value]' => 'en',
- 'field_image_field[0][alt]' => 'alternative_text'
+ 'field_image_field[0][alt]' => 'alternative_text',
];
$this->drupalPostForm(NULL, $edit, t('Save (this translation)'));