Add test cases for sending a command to a server

tests/Integration/Api/Client/ClientApiIntegrationTestCase.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Pterodactyl\Tests\Integration\Api\Client;
+
+use Pterodactyl\Models\Node;
+use Pterodactyl\Models\User;
+use Pterodactyl\Models\Server;
+use Pterodactyl\Models\Subuser;
+use Pterodactyl\Models\Location;
+use Pterodactyl\Tests\Integration\IntegrationTestCase;
+
+abstract class ClientApiIntegrationTestCase extends IntegrationTestCase
+{
+    /**
+     * Cleanup after running tests.
+     */
+    protected function tearDown(): void
+    {
+        Server::query()->forceDelete();
+        Node::query()->forceDelete();
+        Location::query()->forceDelete();
+        User::query()->forceDelete();
+
+        parent::tearDown();
+    }
+
+    /**
+     * Generates a user and a server for that user. If an array of permissions is passed it
+     * is assumed that the user is actually a subuser of the server.
+     *
+     * @param string[] $permissions
+     * @return array
+     */
+    protected function generateTestAccount(array $permissions = []): array
+    {
+        /** @var \Pterodactyl\Models\User $user */
+        $user = factory(User::class)->create();
+
+        if (empty($permissions)) {
+            return [$user, $this->createServerModel(['user_id' => $user->id])];
+        }
+
+        $server = $this->createServerModel();
+
+        Subuser::query()->create([
+            'user_id' => $user->id,
+            'server_id' => $server->id,
+            'permissions' => $permissions,
+        ]);
+
+        return [$user, $server];
+    }
+}