Added more tests to Common module

module/Common/test/Factory/TranslatorFactoryTest.php

@@ -0,0 +1,31 @@
+<?php
+namespace ShlinkioTest\Shlink\Common\Factory;
+
+use PHPUnit_Framework_TestCase as TestCase;
+use Shlinkio\Shlink\Common\Factory\TranslatorFactory;
+use Zend\I18n\Translator\Translator;
+use Zend\ServiceManager\ServiceManager;
+
+class TranslatorFactoryTest extends TestCase
+{
+    /**
+     * @var TranslatorFactory
+     */
+    protected $factory;
+
+    public function setUp()
+    {
+        $this->factory = new TranslatorFactory();
+    }
+
+    /**
+     * @test
+     */
+    public function serviceIsCreated()
+    {
+        $instance = $this->factory->__invoke(new ServiceManager(['services' => [
+            'config' => [],
+        ]]), '');
+        $this->assertInstanceOf(Translator::class, $instance);
+    }
+}