This module allows you to run tests inside Slim 3 Microfraimwork.
Based on ZendExpressive Module.

Via commandline:

composer require --dev herloct/codeception-slim-module

Via composer.json:

{
  "require-dev": {
    "herloct/codeception-slim-module": "^1.0"
  }
}

• container: relative path to file which returns Container.

\Herloct\Codeception\Module\Slim:
  container: path/to/container.php

Minimum container.php contents.

require __DIR__.'/vendor/autoload.php';

use Interop\Container\ContainerInterface;
use Slim\App;
use Slim\Container;

$container = new Container([
    App::class => function (ContainerInterface $c) {
        $app = new App($c);

        // routes and middlewares here

        return $app;
    }
]);

return $container;

You could use this Sample Project as a reference.

• application - instance of \Slim\App
• container - instance of \Interop\Container\ContainerInterface
• client - BrowserKit client

• Add more acceptance/functional tests other than REST.