diff --git a/composer.json b/composer.json
index 1b5724c..b519819 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "meritoo/common-library",
     "description": "Useful classes, methods, extensions etc.",
     "license": "MIT",
-    "version": "0.0.10",
+    "version": "0.0.11",
     "authors": [
         {
             "name": "Meritoo.pl",
diff --git a/src/Meritoo/Common/Test/Base/BaseTestCase.php b/src/Meritoo/Common/Test/Base/BaseTestCase.php
index 793e182..7a5c1d5 100644
--- a/src/Meritoo/Common/Test/Base/BaseTestCase.php
+++ b/src/Meritoo/Common/Test/Base/BaseTestCase.php
@@ -180,7 +180,7 @@ abstract class BaseTestCase extends TestCase
     /**
      * Verifies visibility and arguments of class constructor
      *
-     * @param string $classNamespace         Namespace of class that contains method to verify
+     * @param string $classNamespace         Namespace of class that contains constructor to verify
      * @param string $visibilityType         Expected visibility of verified method. One of OopVisibilityType class
      *                                       constants.
      * @param int    $argumentsCount         (optional) Expected count/amount of arguments of the verified method
@@ -202,4 +202,20 @@ abstract class BaseTestCase extends TestCase
 
         return $this->verifyMethodVisibilityAndArguments($classNamespace, $method, $visibilityType, $argumentsCount, $requiredArgumentsCount);
     }
+
+    /**
+     * Asserts that class with given namespace has no constructor
+     *
+     * @param string $classNamespace Namespace of class that contains constructor to verify
+     */
+    protected static function assertHasNoConstructor($classNamespace)
+    {
+        /*
+         * Let's grab the constructor
+         */
+        $reflection = new ReflectionClass($classNamespace);
+        $constructor = $reflection->getConstructor();
+
+        static::assertNull($constructor);
+    }
 }
diff --git a/tests/Meritoo/Common/Test/Utilities/ArraysTest.php b/tests/Meritoo/Common/Test/Utilities/ArraysTest.php
index db135db..b7df01d 100644
--- a/tests/Meritoo/Common/Test/Utilities/ArraysTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/ArraysTest.php
@@ -8,8 +8,8 @@
 
 namespace Meritoo\Common\Test\Utilities;
 
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\Arrays;
-use PHPUnit\Framework\TestCase;
 
 /**
  * Tests of the useful arrays methods
@@ -17,7 +17,7 @@ use PHPUnit\Framework\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class ArraysTest extends TestCase
+class ArraysTest extends BaseTestCase
 {
     private $simpleArray;
     private $simpleArrayWithKeys;
@@ -25,6 +25,11 @@ class ArraysTest extends TestCase
     private $complexArray;
     private $superComplexArray;
 
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Arrays::class);
+    }
+
     public function testValues2string()
     {
         /*
diff --git a/tests/Meritoo/Common/Test/Utilities/BundleTest.php b/tests/Meritoo/Common/Test/Utilities/BundleTest.php
index 39d002c..a5eb060 100644
--- a/tests/Meritoo/Common/Test/Utilities/BundleTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/BundleTest.php
@@ -8,8 +8,8 @@
 
 namespace Meritoo\Common\Test\Utilities;
 
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\Bundle;
-use PHPUnit\Framework\TestCase;
 
 /**
  * Tests of the useful methods for bundle
@@ -17,8 +17,13 @@ use PHPUnit\Framework\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class BundleTest extends TestCase
+class BundleTest extends BaseTestCase
 {
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Bundle::class);
+    }
+
     public function testGetBundleViewPathEmptyPathAndBundle()
     {
         self::assertNull(Bundle::getBundleViewPath('', ''));
diff --git a/tests/Meritoo/Common/Test/Utilities/ComposerTest.php b/tests/Meritoo/Common/Test/Utilities/ComposerTest.php
index c52900d..eee6eed 100644
--- a/tests/Meritoo/Common/Test/Utilities/ComposerTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/ComposerTest.php
@@ -27,6 +27,11 @@ class ComposerTest extends BaseTestCase
      */
     private $composerJsonPath;
 
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Composer::class);
+    }
+
     /**
      * @param string $composerJsonPath Empty value, e.g. ""
      * @dataProvider provideEmptyValue
diff --git a/tests/Meritoo/Common/Test/Utilities/DateTest.php b/tests/Meritoo/Common/Test/Utilities/DateTest.php
index c9d4845..b175974 100644
--- a/tests/Meritoo/Common/Test/Utilities/DateTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/DateTest.php
@@ -23,6 +23,11 @@ use Meritoo\Common\Utilities\Date;
  */
 class DateTest extends BaseTestCase
 {
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Date::class);
+    }
+
     /**
      * @param mixed $value Empty value, e.g. ""
      * @dataProvider provideEmptyValue
diff --git a/tests/Meritoo/Common/Test/Utilities/GeneratorUtilityTest.php b/tests/Meritoo/Common/Test/Utilities/GeneratorUtilityTest.php
index 284d80d..25ff700 100644
--- a/tests/Meritoo/Common/Test/Utilities/GeneratorUtilityTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/GeneratorUtilityTest.php
@@ -19,6 +19,11 @@ use Meritoo\Common\Utilities\GeneratorUtility;
  */
 class GeneratorUtilityTest extends BaseTestCase
 {
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(GeneratorUtility::class);
+    }
+
     public function testGetGeneratorElements()
     {
         /*
diff --git a/tests/Meritoo/Common/Test/Utilities/LocaleTest.php b/tests/Meritoo/Common/Test/Utilities/LocaleTest.php
index 790a313..b28f18d 100644
--- a/tests/Meritoo/Common/Test/Utilities/LocaleTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/LocaleTest.php
@@ -20,6 +20,11 @@ use Meritoo\Common\Utilities\Locale;
  */
 class LocaleTest extends BaseTestCase
 {
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Locale::class);
+    }
+
     /**
      * @param mixed $languageCode Empty value, e.g. ""
      * @dataProvider provideEmptyValue
diff --git a/tests/Meritoo/Common/Test/Utilities/MimeTypesTest.php b/tests/Meritoo/Common/Test/Utilities/MimeTypesTest.php
index b252b28..164ace8 100644
--- a/tests/Meritoo/Common/Test/Utilities/MimeTypesTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/MimeTypesTest.php
@@ -20,6 +20,11 @@ use Meritoo\Common\Utilities\MimeTypes;
  */
 class MimeTypesTest extends BaseTestCase
 {
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(MimeTypes::class);
+    }
+
     /**
      * @param mixed $mimeType Empty value, e.g. ""
      * @dataProvider provideEmptyValue
diff --git a/tests/Meritoo/Common/Test/Utilities/MiscellaneousTest.php b/tests/Meritoo/Common/Test/Utilities/MiscellaneousTest.php
index b4f9267..1ace0da 100644
--- a/tests/Meritoo/Common/Test/Utilities/MiscellaneousTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/MiscellaneousTest.php
@@ -28,6 +28,11 @@ class MiscellaneousTest extends BaseTestCase
     private $stringCommaSeparated;
     private $stringDotSeparated;
 
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Miscellaneous::class);
+    }
+
     public function testGetDirectoryContent()
     {
         $directoryPath = __DIR__ . '/../';
diff --git a/tests/Meritoo/Common/Test/Utilities/ReflectionTest.php b/tests/Meritoo/Common/Test/Utilities/ReflectionTest.php
index 94f97ac..6983126 100644
--- a/tests/Meritoo/Common/Test/Utilities/ReflectionTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/ReflectionTest.php
@@ -29,6 +29,11 @@ use Meritoo\Common\Utilities\Reflection;
  */
 class ReflectionTest extends BaseTestCase
 {
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Reflection::class);
+    }
+
     /**
      * @param mixed $invalidClass Empty value, e.g. ""
      * @dataProvider provideEmptyValue
diff --git a/tests/Meritoo/Common/Test/Utilities/RegexTest.php b/tests/Meritoo/Common/Test/Utilities/RegexTest.php
index 8852616..78e7936 100644
--- a/tests/Meritoo/Common/Test/Utilities/RegexTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/RegexTest.php
@@ -8,7 +8,7 @@
 
 namespace Meritoo\Common\Utilities;
 
-use PHPUnit\Framework\TestCase;
+use Meritoo\Common\Test\Base\BaseTestCase;
 
 /**
  * Tests of the useful regular expressions methods
@@ -16,11 +16,16 @@ use PHPUnit\Framework\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class RegexTest extends TestCase
+class RegexTest extends BaseTestCase
 {
     private $simpleText;
     private $camelCaseText;
 
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Regex::class);
+    }
+
     public function testGetCamelCaseParts()
     {
         $parts = [];
diff --git a/tests/Meritoo/Common/Test/Utilities/UriTest.php b/tests/Meritoo/Common/Test/Utilities/UriTest.php
index 179a430..88e1c99 100644
--- a/tests/Meritoo/Common/Test/Utilities/UriTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/UriTest.php
@@ -19,6 +19,11 @@ use Meritoo\Common\Utilities\Uri;
  */
 class UriTest extends BaseTestCase
 {
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Uri::class);
+    }
+
     public function testAddProtocolToUrl()
     {
         $http = 'http';
diff --git a/tests/Meritoo/Common/Test/Utilities/XmlTest.php b/tests/Meritoo/Common/Test/Utilities/XmlTest.php
index 168a81e..7b2c316 100644
--- a/tests/Meritoo/Common/Test/Utilities/XmlTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/XmlTest.php
@@ -8,8 +8,8 @@
 
 namespace Meritoo\Common\Test\Utilities;
 
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\Xml;
-use PHPUnit\Framework\TestCase;
 use SimpleXMLElement;
 
 /**
@@ -18,11 +18,16 @@ use SimpleXMLElement;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class XmlTest extends TestCase
+class XmlTest extends BaseTestCase
 {
     private $simpleXml;
     private $advancedXml;
 
+    public function verifyConstructor()
+    {
+        static::assertHasNoConstructor(Xml::class);
+    }
+
     public function testMergeNodes()
     {
         /*