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);
+    }
+}

module/Common/test/Middleware/LocaleMiddlewareTest.php

@@ -0,0 +1,71 @@
+<?php
+namespace ShlinkioTest\Shlink\Common\Middleware;
+
+use PHPUnit_Framework_TestCase as TestCase;
+use Shlinkio\Shlink\Common\Middleware\LocaleMiddleware;
+use Zend\Diactoros\Response;
+use Zend\Diactoros\ServerRequestFactory;
+use Zend\I18n\Translator\Translator;
+
+class LocaleMiddlewareTest extends TestCase
+{
+    /**
+     * @var LocaleMiddleware
+     */
+    protected $middleware;
+    /**
+     * @var Translator
+     */
+    protected $translator;
+
+    public function setUp()
+    {
+        $this->translator = Translator::factory(['locale' => 'ru']);
+        $this->middleware = new LocaleMiddleware($this->translator);
+    }
+
+    /**
+     * @test
+     */
+    public function whenNoHeaderIsPresentLocaleIsNotChanged()
+    {
+        $this->assertEquals('ru', $this->translator->getLocale());
+        $this->middleware->__invoke(ServerRequestFactory::fromGlobals(), new Response(), function ($req, $resp) {
+            return $resp;
+        });
+        $this->assertEquals('ru', $this->translator->getLocale());
+    }
+
+    /**
+     * @test
+     */
+    public function whenTheHeaderIsPresentLocaleIsChanged()
+    {
+        $this->assertEquals('ru', $this->translator->getLocale());
+        $request = ServerRequestFactory::fromGlobals()->withHeader('Accept-Language', 'es');
+        $this->middleware->__invoke($request, new Response(), function ($req, $resp) {
+            return $resp;
+        });
+        $this->assertEquals('es', $this->translator->getLocale());
+    }
+
+    /**
+     * @test
+     */
+    public function localeGetsNormalized()
+    {
+        $this->assertEquals('ru', $this->translator->getLocale());
+
+        $request = ServerRequestFactory::fromGlobals()->withHeader('Accept-Language', 'es_ES');
+        $this->middleware->__invoke($request, new Response(), function ($req, $resp) {
+            return $resp;
+        });
+        $this->assertEquals('es', $this->translator->getLocale());
+
+        $request = ServerRequestFactory::fromGlobals()->withHeader('Accept-Language', 'en-US');
+        $this->middleware->__invoke($request, new Response(), function ($req, $resp) {
+            return $resp;
+        });
+        $this->assertEquals('en', $this->translator->getLocale());
+    }
+}