Add Doctrine Connection factory

[MAILPOET-2014]

tests/integration/Doctrine/ConnectionFactoryTest.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace MailPoet\Test\Config;
+
+use MailPoet\Config\Env;
+use MailPoet\Doctrine\ConnectionFactory;
+use MailPoetVendor\Doctrine\DBAL\Driver\PDOMySql;
+use MailPoetVendor\Doctrine\DBAL\Platforms\MySqlPlatform;
+use PDO;
+
+class ConnectionFactoryTest extends \MailPoetTest {
+  function testItSetsUpConnection() {
+    $connection_factory = new ConnectionFactory();
+    $connection = $connection_factory->createConnection();
+
+    expect($connection->getWrappedConnection())->isInstanceOf(PDO::class);
+    expect($connection->getDriver())->isInstanceOf(PDOMySql\Driver::class);
+    expect($connection->getDatabasePlatform())->isInstanceOf(MySqlPlatform::class);
+    expect($connection->getHost())->equals(Env::$db_host);
+    expect($connection->getPort())->equals(Env::$db_port);
+    expect($connection->getParams()['socket'])->equals(Env::$db_socket);
+    expect($connection->getUsername())->equals(Env::$db_username);
+    expect($connection->getPassword())->equals(Env::$db_password);
+    expect($connection->getParams()['charset'])->equals(Env::$db_charset);
+    expect($connection->getDatabase())->equals(Env::$db_name);
+  }
+}