Flash Session Not Working In Middleware Laravel 5.2

I am newcomer in Laravel. I have a problem with session flash in Middleware. In Middleware:

public function handle($request, Closure $next)
       {
            if(auth()->check()){
                return $next($request);
            }else{
                Notification::error('Please login');
                return redirect()->route('admin.auth.login.get')->with('test',' session');
            }

        }

In View:

I get Nofitication but nothing happen. I check with flash session (session('test'))-> nothing happen.

Please help to explain me why it dont work? and what's solution?.

Thank you very much and sorry about my English.

Add your route in web middleware

Route::group(['middleware' => ['web']], function () {
    //
});

See this
basic-routing

Make sure that in kernel.php
web Middleware is

        'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,

    ],