PHP Unit Test with deferred Page Props

[felix-droese]

Hi, in a Laravel + Vue Setup,

I would like to test the proper initialization of a deferred prop:

In my controller, I return this prop to the page:

'timesheet' => Inertia::defer(fn () => $timesheetService->timesheet($employee)),

And my test looks like this:

$response = $this->get(route('site::analysis.timesheet', [
    'employee_id' => $employee->id,
    'start_date' => $startDate->toIso8601String(),
    'end_date' => $endDate->toIso8601String(),
]))->assertInertia(fn (AssertableInertia $page) => $page
        ->has('timesheet')
);

$tTimesheet = $response->original['page']['props']['timesheet'];

I get the output:

Property [timesheet] does not exist.

Is it possible to test deferred props? If yes, how?