Made test properties to be private instead of protected

module/Common/test/ConfigProviderTest.php

@@ -9,7 +9,7 @@ use Shlinkio\Shlink\Common\ConfigProvider;
 class ConfigProviderTest extends TestCase
 {
     /** @var ConfigProvider */
-    protected $configProvider;
+    private $configProvider;
 
     public function setUp()
     {

module/Common/test/Factory/CacheFactoryTest.php

@@ -20,7 +20,7 @@ use function sys_get_temp_dir;
 class CacheFactoryTest extends TestCase
 {
     /** @var CacheFactory */
-    protected $factory;
+    private $factory;
 
     public function setUp()
     {

module/Common/test/Factory/EmptyResponseImplicitOptionsMiddlewareFactoryTest.php

@@ -13,7 +13,7 @@ use Zend\ServiceManager\ServiceManager;
 class EmptyResponseImplicitOptionsMiddlewareFactoryTest extends TestCase
 {
     /** @var EmptyResponseImplicitOptionsMiddlewareFactory */
-    protected $factory;
+    private $factory;
 
     public function setUp()
     {

module/Common/test/Factory/EntityManagerFactoryTest.php

@@ -11,7 +11,7 @@ use Zend\ServiceManager\ServiceManager;
 class EntityManagerFactoryTest extends TestCase
 {
     /** @var EntityManagerFactory */
-    protected $factory;
+    private $factory;
 
     public function setUp()
     {

module/Common/test/Factory/LoggerFactoryTest.php

@@ -12,7 +12,7 @@ use Zend\ServiceManager\ServiceManager;
 class LoggerFactoryTest extends TestCase
 {
     /** @var LoggerFactory */
-    protected $factory;
+    private $factory;
 
     public function setUp()
     {

module/Common/test/Factory/TranslatorFactoryTest.php

@@ -11,7 +11,7 @@ use Zend\ServiceManager\ServiceManager;
 class TranslatorFactoryTest extends TestCase
 {
     /** @var TranslatorFactory */
-    protected $factory;
+    private $factory;
 
     public function setUp()
     {

module/Common/test/Image/ImageBuilderFactoryTest.php

@@ -11,7 +11,7 @@ use Zend\ServiceManager\ServiceManager;
 class ImageBuilderFactoryTest extends TestCase
 {
     /** @var ImageBuilderFactory */
-    protected $factory;
+    private $factory;
 
     public function setUp()
     {

module/Common/test/Image/ImageFactoryTest.php

@@ -12,7 +12,7 @@ use Zend\ServiceManager\ServiceManager;
 class ImageFactoryTest extends TestCase
 {
     /** @var ImageFactory */
-    protected $factory;
+    private $factory;
 
     public function setUp()
     {

module/Common/test/IpGeolocation/IpApiLocationResolverTest.php

@@ -14,9 +14,9 @@ use function json_encode;
 class IpApiLocationResolverTest extends TestCase
 {
     /** @var IpApiLocationResolver */
-    protected $ipResolver;
+    private $ipResolver;
     /** @var ObjectProphecy */
-    protected $client;
+    private $client;
 
     public function setUp()
     {

module/Common/test/Middleware/LocaleMiddlewareTest.php

@@ -12,9 +12,9 @@ use Zend\I18n\Translator\Translator;
 class LocaleMiddlewareTest extends TestCase
 {
     /** @var LocaleMiddleware */
-    protected $middleware;
+    private $middleware;
     /** @var Translator */
-    protected $translator;
+    private $translator;
 
     public function setUp()
     {

module/Common/test/Paginator/PaginableRepositoryAdapterTest.php

@@ -11,9 +11,9 @@ use Shlinkio\Shlink\Common\Repository\PaginableRepositoryInterface;
 class PaginableRepositoryAdapterTest extends TestCase
 {
     /** @var PaginableRepositoryAdapter */
-    protected $adapter;
+    private $adapter;
     /** @var ObjectProphecy */
-    protected $repo;
+    private $repo;
 
     public function setUp()
     {

module/Common/test/Service/PreviewGeneratorTest.php

@@ -17,11 +17,11 @@ use function urlencode;
 class PreviewGeneratorTest extends TestCase
 {
     /** @var PreviewGenerator */
-    protected $generator;
+    private $generator;
     /** @var ObjectProphecy */
-    protected $image;
+    private $image;
     /** @var ObjectProphecy */
-    protected $filesystem;
+    private $filesystem;
 
     public function setUp()
     {

module/Common/test/Template/Extension/TranslatorExtensionTest.php

@@ -12,7 +12,7 @@ use Zend\I18n\Translator\Translator;
 class TranslatorExtensionTest extends TestCase
 {
     /** @var TranslatorExtension */
-    protected $extension;
+    private $extension;
 
     public function setUp()
     {