public function testReadonlyField() { $field = new DropdownField('FeelingOk', 'Are you feeling ok?', array(0 => 'No', 1 => 'Yes')); $field->setEmptyString('(Select one)'); $field->setValue(1); $readonlyField = $field->performReadonlyTransformation(); preg_match('/Yes/', $field->Field(), $matches); $this->assertEquals($matches[0], 'Yes'); }