Yii2 and Codeception: why is Stub not working for Request component?

Question

Yii

Hello.
I am writing a functional test in Codeception, I want to replace the getUserIP () method of the Request component, for this I create a Stub and register it in the application:

$requestStub = Stub::make(\yii\web\Request::class, ['getUserIP' => function () { return '192.168.0.10'; }]);
\Yii::$app->set('request', $requestStub);

I run the test and get the error:

[yii\base\ErrorException] Undefined index: SCRIPT_FILENAME

I start looking in more detail, the error appears in yii2\web\Request.php:

public function getScriptFile()
{
    return isset($this->_scriptFile) ? $this->_scriptFile : $_SERVER['SCRIPT_FILENAME'];
} 

I write an error_log inside this method and log the contents of the $_SERVER variable, run a functional test and see in the log that there is a SCRIPT_FILENAME index.
How can such an error occur if there is an index?
Has anyone come across this?

Answer 1

Do other functional tests work? this looks like a bug with a functional test misconfiguration