Add tests for Getting Started index page

.editorconfig

@@ -0,0 +1,13 @@
+[*]
+charset = utf-8
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+
+[/vendor/**]
+charset = unset
+end_of_line = unset
+insert_final_newline = unset
+trim_trailing_whitespace = unset
+indent_style = unset
+indent_size = unset

app/bootstrap.php

@@ -0,0 +1,32 @@
+<?php
+
+use Psr\Log\LoggerInterface;
+use DI\Container;
+use DI\Bridge\Slim\Bridge;
+use Monolog\Handler\StreamHandler;
+use Monolog\Level;
+use Monolog\Logger;
+use Slim\Views\Twig;
+
+// Create DI container
+$container = new Container();
+// Add Twig to Container
+$container->set(Twig::class, function() {
+  return Twig::create(__DIR__.'/../views');
+});
+// Add Monolog to Container
+$container->set(LoggerInterface::class, function () {
+  $logger = new Logger('default');
+  $logger->pushHandler(new StreamHandler('php://stderr'), Level::Debug);
+  return $logger;
+});
+
+// Create main Slim app
+$app = Bridge::create($container);
+$app->addErrorMiddleware(true, false, false);
+
+// add routes
+$routes = require(__DIR__.'/routes.php');
+$routes($app);
+
+return $app;

app/routes.php

@@ -0,0 +1,15 @@
+<?php
+
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+use Psr\Log\LoggerInterface;
+use Slim\App;
+use Slim\Views\Twig;
+
+return function(App $app) {
+  // Our web handlers
+  $app->get('/', function(Request $request, Response $response, LoggerInterface $logger, Twig $twig) {
+    $logger->debug('logging output.');
+    return $twig->render($response, 'index.twig');
+  });
+};

composer.json

@@ -8,5 +8,16 @@
     "monolog/monolog": "^3.0",
     "twig/twig": "^3.0",
     "slim/twig-view": "^3.0"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^13.0"
+  },
+  "scripts": {
+    "test": "phpunit"
+  },
+  "autoload-dev": {
+      "psr-4": {
+          "Tests\\": "tests/"
+      }
   }
 }