part one of adding tests, updating core

tests/Test/Concerns/MakesApiRequests.php

@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Tests\Test\Concerns;
+
+use Flarum\Api\ApiServiceProvider;
+use Flarum\Api\Client;
+use Flarum\User\Guest;
+use Flarum\User\User;
+use Psr\Http\Message\ResponseInterface;
+
+trait MakesApiRequests
+{
+    public function call(string $controller, User $actor = null, array $queryParams = [], array $body = []): ResponseInterface
+    {
+        $this->app->register(ApiServiceProvider::class);
+        $this->app->make('flarum.api.middleware');
+        /** @var Client $api */
+        $api = $this->app->make(Client::class);
+
+        return $api->send($controller, $actor ?? new Guest, $queryParams, $body);
+    }
+}