First version of functional tests working

config/cli-config.php

@@ -4,9 +4,31 @@ declare(strict_types=1);
 use Doctrine\ORM\EntityManager;
 use Doctrine\ORM\Tools\Console\ConsoleRunner;
 use Interop\Container\ContainerInterface;
+use Zend\ServiceManager\ServiceManager;
 
-/** @var ContainerInterface $container */
+$isTest = false;
+foreach ($_SERVER['argv'] as $i => $arg) {
+    if ($arg === '--test') {
+        unset($_SERVER['argv'][$i]);
+        $isTest = true;
+        break;
+    }
+}
+
+/** @var ContainerInterface|ServiceManager $container */
 $container = include __DIR__ . '/container.php';
+
+// If in testing env, override DB connection to use an in-memory sqlite database
+if ($isTest) {
+    $container->setAllowOverride(true);
+    $config = $container->get('config');
+    $config['entity_manager']['connection'] = [
+        'driver' => 'pdo_sqlite',
+        'memory' => true,
+    ];
+    $container->setService('config', $config);
+}
+
 /** @var EntityManager $em */
 $em = $container->get(EntityManager::class);