[L5.1][Unit Test] basic authentication `be` from tests when using `onceBasic` as middleware doesn't work

I did some research and tests and if I change it to

return $this->auth->basic('username') ?: $next($request);

Instead of

return $this->auth->onceBasic('username') ?: $next($request);

My test works, why is basic working and onceBasic don't? :S

In Laravel 5.2 this issue still exists.

I worked around this by using $this->auth->basic() and NOT using the web middleware group for all api related routes in routes.php. This way no cookies or session vars get set!

The following middleware works for me (based on Illuminate\Auth\Middleware\AuthenticateWithBasicAuth)

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Contracts\Auth\Factory as AuthFactory;

class AuthenticateOnceWithBasicAuth
{
    /**
     * The guard factory instance.
     *
     * @var \Illuminate\Contracts\Auth\Factory
     */
    protected $auth;

    /**
     * Create a new middleware instance.
     *
     * @param  \Illuminate\Contracts\Auth\Factory  $auth
     * @return void
     */
    public function __construct(AuthFactory $auth)
    {
        $this->auth = $auth;
    }

    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @param  string|null  $guard
     * @return mixed
     */
    public function handle($request, Closure $next, $guard = null)
    {
        $guard = $this->auth->guard($guard);

        if ($guard->check()) {
            return $next($request);
        }

        return $guard->onceBasic() ?: $next($request);
    }
}