Updated CreateDatabaseCommand to create the empty database if it does not exist

module/Common/test/Doctrine/ConnectionFactoryTest.php

@@ -0,0 +1,44 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Common\Doctrine;
+
+use Doctrine\DBAL\Connection;
+use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\EntityManagerInterface;
+use PHPUnit\Framework\TestCase;
+use Prophecy\Prophecy\ObjectProphecy;
+use Psr\Container\ContainerInterface;
+use Shlinkio\Shlink\Common\Doctrine\ConnectionFactory;
+
+class ConnectionFactoryTest extends TestCase
+{
+    /** @var ConnectionFactory */
+    private $factory;
+    /** @var ObjectProphecy */
+    private $container;
+    /** @var ObjectProphecy */
+    private $em;
+
+    public function setUp(): void
+    {
+        $this->container = $this->prophesize(ContainerInterface::class);
+        $this->em = $this->prophesize(EntityManagerInterface::class);
+        $this->container->get(EntityManager::class)->willReturn($this->em->reveal());
+
+        $this->factory = new ConnectionFactory();
+    }
+
+    /** @test */
+    public function properServiceFallbackOccursWhenInvoked(): void
+    {
+        $connection = $this->prophesize(Connection::class)->reveal();
+        $getConnection = $this->em->getConnection()->willReturn($connection);
+
+        $result = ($this->factory)($this->container->reveal());
+
+        $this->assertSame($connection, $result);
+        $getConnection->shouldHaveBeenCalledOnce();
+        $this->container->get(EntityManager::class)->shouldHaveBeenCalledOnce();
+    }
+}