Is it possible to test broadcast notifications?

try {
    if (Carbon::parse($this->data['starts_at'])->gte(Carbon::parse($this->data['ends_at']))) {
        throw new \Exception('Date Error');
    }
} catch (\Exception $e) {
    auth()->user()->notify(
        Notification::make()
            ->danger()
            ->title('Date Error')
            ->body('Ends at date should be greater than the starts at date.')
            ->persistent()
            ->toBroadcast()
    );

    $this->halt();
}

Livewire::actingAs($this->user)
    ->test(CreateTenancy::class)
    ->fillForm([
        'starts_at' => now()->addDays(5)->toDateString(),
        'ends_at' => now()->toDateString(),
    ])
    ->call('create')
    ->assertNotified(
        Notification::make()
            ->danger()
            ->title('Date Error')
            ->body('Ends at date should be greater than the starts at date.')
            ->persistent()
    );

A notification was not sent
Failed asserting that null is not null.