diff --git a/src/Meritoo/Common/Utilities/TestCase.php b/src/Meritoo/Common/Test/Base/BaseTestCase.php
similarity index 96%
rename from src/Meritoo/Common/Utilities/TestCase.php
rename to src/Meritoo/Common/Test/Base/BaseTestCase.php
index a4e4530..de7e4b0 100644
--- a/src/Meritoo/Common/Utilities/TestCase.php
+++ b/src/Meritoo/Common/Test/Base/BaseTestCase.php
@@ -6,7 +6,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Meritoo\Common\Utilities;
+namespace Meritoo\Common\Test\Base;
 
 use DateTime;
 use Generator;
@@ -17,12 +17,12 @@ use ReflectionClass;
 use ReflectionMethod;
 
 /**
- * Test case with common methods and data providers
+ * Base test case with common methods and data providers
  *
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class TestCase extends PHPUnit_Framework_TestCase
+abstract class BaseTestCase extends PHPUnit_Framework_TestCase
 {
     /**
      * Provides an empty value
@@ -109,7 +109,7 @@ class TestCase extends PHPUnit_Framework_TestCase
             $directoryPath = '/' . $directoryPath;
         }
 
-        return sprintf('%s/../../../../data/tests/%s%s', __DIR__, $fileName, $directoryPath);
+        return sprintf('%s/../../../../../data/tests/%s%s', __DIR__, $fileName, $directoryPath);
     }
 
     /**
diff --git a/tests/Meritoo/Common/Test/Collection/CollectionTest.php b/tests/Meritoo/Common/Test/Collection/CollectionTest.php
index 178f920..bfeb579 100644
--- a/tests/Meritoo/Common/Test/Collection/CollectionTest.php
+++ b/tests/Meritoo/Common/Test/Collection/CollectionTest.php
@@ -10,8 +10,8 @@ namespace Meritoo\Common\Test\Collection;
 
 use ArrayIterator;
 use Meritoo\Common\Collection\Collection;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Type\OopVisibilityType;
-use Meritoo\Common\Utilities\TestCase;
 
 /**
  * Tests of the collection of elements
@@ -19,7 +19,7 @@ use Meritoo\Common\Utilities\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class CollectionTest extends TestCase
+class CollectionTest extends BaseTestCase
 {
     /**
      * An empty collection
diff --git a/tests/Meritoo/Common/Test/Utilities/ComposerTest.php b/tests/Meritoo/Common/Test/Utilities/ComposerTest.php
index fcca6af..c52900d 100644
--- a/tests/Meritoo/Common/Test/Utilities/ComposerTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/ComposerTest.php
@@ -8,8 +8,9 @@
 
 namespace Meritoo\Common\Test\Utilities;
 
+use Generator;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\Composer;
-use Meritoo\Common\Utilities\TestCase;
 
 /**
  * Tests of the useful Composer-related methods
@@ -17,7 +18,7 @@ use Meritoo\Common\Utilities\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class ComposerTest extends TestCase
+class ComposerTest extends BaseTestCase
 {
     /**
      * Path of existing composer.json used as source of data for tests
@@ -60,7 +61,7 @@ class ComposerTest extends TestCase
     /**
      * Provides names and values of existing nodes
      *
-     * @return \Generator
+     * @return Generator
      */
     public function getExistingNode()
     {
diff --git a/tests/Meritoo/Common/Test/Utilities/DatePeriodTest.php b/tests/Meritoo/Common/Test/Utilities/DatePeriodTest.php
index 2407ad5..ccc8d60 100644
--- a/tests/Meritoo/Common/Test/Utilities/DatePeriodTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/DatePeriodTest.php
@@ -10,9 +10,9 @@ namespace Meritoo\Common\Test\Utilities;
 
 use DateTime;
 use Generator;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Type\OopVisibilityType;
 use Meritoo\Common\Utilities\DatePeriod;
-use Meritoo\Common\Utilities\TestCase;
 
 /**
  * Tests of date's period
@@ -20,7 +20,7 @@ use Meritoo\Common\Utilities\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class DatePeriodTest extends TestCase
+class DatePeriodTest extends BaseTestCase
 {
     public function testConstructorVisibilityAndArguments()
     {
diff --git a/tests/Meritoo/Common/Test/Utilities/DateTest.php b/tests/Meritoo/Common/Test/Utilities/DateTest.php
index 432fcfc..c287a56 100644
--- a/tests/Meritoo/Common/Test/Utilities/DateTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/DateTest.php
@@ -12,8 +12,8 @@ use DateInterval;
 use DateTime;
 use Generator;
 use Meritoo\Common\Exception\Date\UnknownDatePartTypeException;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\Date;
-use Meritoo\Common\Utilities\TestCase;
 
 /**
  * Tests of the Date methods (only static functions)
@@ -21,7 +21,7 @@ use Meritoo\Common\Utilities\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class DateTest extends TestCase
+class DateTest extends BaseTestCase
 {
     /**
      * @param mixed $value Empty value, e.g. ""
diff --git a/tests/Meritoo/Common/Test/Utilities/GeneratorUtilityTest.php b/tests/Meritoo/Common/Test/Utilities/GeneratorUtilityTest.php
index 401c71e..284d80d 100644
--- a/tests/Meritoo/Common/Test/Utilities/GeneratorUtilityTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/GeneratorUtilityTest.php
@@ -8,8 +8,8 @@
 
 namespace Meritoo\Common\Test\Utilities;
 
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\GeneratorUtility;
-use Meritoo\Common\Utilities\TestCase;
 
 /**
  * Tests of the useful methods for the Generator class
@@ -17,7 +17,7 @@ use Meritoo\Common\Utilities\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class GeneratorUtilityTest extends TestCase
+class GeneratorUtilityTest extends BaseTestCase
 {
     public function testGetGeneratorElements()
     {
diff --git a/tests/Meritoo/Common/Test/Utilities/LocaleTest.php b/tests/Meritoo/Common/Test/Utilities/LocaleTest.php
index 7137dda..790a313 100644
--- a/tests/Meritoo/Common/Test/Utilities/LocaleTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/LocaleTest.php
@@ -9,8 +9,8 @@
 namespace Meritoo\Common\Test\Utilities;
 
 use Generator;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\Locale;
-use Meritoo\Common\Utilities\TestCase;
 
 /**
  * Tests of the useful locale methods
@@ -18,7 +18,7 @@ use Meritoo\Common\Utilities\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class LocaleTest extends TestCase
+class LocaleTest extends BaseTestCase
 {
     /**
      * @param mixed $languageCode Empty value, e.g. ""
diff --git a/tests/Meritoo/Common/Test/Utilities/MimeTypesTest.php b/tests/Meritoo/Common/Test/Utilities/MimeTypesTest.php
index 55724ce..b252b28 100644
--- a/tests/Meritoo/Common/Test/Utilities/MimeTypesTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/MimeTypesTest.php
@@ -9,8 +9,8 @@
 namespace Meritoo\Common\Test\Utilities;
 
 use Generator;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\MimeTypes;
-use Meritoo\Common\Utilities\TestCase;
 
 /**
  * Tests of the useful methods for mime types of files
@@ -18,7 +18,7 @@ use Meritoo\Common\Utilities\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class MimeTypesTest extends TestCase
+class MimeTypesTest extends BaseTestCase
 {
     /**
      * @param mixed $mimeType Empty value, e.g. ""
diff --git a/tests/Meritoo/Common/Test/Utilities/MiscellaneousTest.php b/tests/Meritoo/Common/Test/Utilities/MiscellaneousTest.php
index b72e1ff..3297a29 100644
--- a/tests/Meritoo/Common/Test/Utilities/MiscellaneousTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/MiscellaneousTest.php
@@ -11,9 +11,9 @@ namespace Meritoo\Common\Test\Utilities;
 use Generator;
 use Meritoo\Common\Exception\Regex\IncorrectColorHexLengthException;
 use Meritoo\Common\Exception\Regex\InvalidColorHexValueException;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\Locale;
 use Meritoo\Common\Utilities\Miscellaneous;
-use Meritoo\Common\Utilities\TestCase;
 use stdClass;
 
 /**
@@ -22,7 +22,7 @@ use stdClass;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class MiscellaneousTest extends TestCase
+class MiscellaneousTest extends BaseTestCase
 {
     private $stringSmall;
     private $stringCommaSeparated;
diff --git a/tests/Meritoo/Common/Test/Utilities/ReflectionTest.php b/tests/Meritoo/Common/Test/Utilities/ReflectionTest.php
index 7d858a0..94f97ac 100644
--- a/tests/Meritoo/Common/Test/Utilities/ReflectionTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/ReflectionTest.php
@@ -13,13 +13,13 @@ use Generator;
 use Meritoo\Common\Exception\Reflection\CannotResolveClassNameException;
 use Meritoo\Common\Exception\Reflection\MissingChildClassesException;
 use Meritoo\Common\Exception\Reflection\TooManyChildClassesException;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Test\Utilities\Reflection\A;
 use Meritoo\Common\Test\Utilities\Reflection\B;
 use Meritoo\Common\Test\Utilities\Reflection\C;
 use Meritoo\Common\Test\Utilities\Reflection\D;
 use Meritoo\Common\Test\Utilities\Reflection\E;
 use Meritoo\Common\Utilities\Reflection;
-use Meritoo\Common\Utilities\TestCase;
 
 /**
  * Tests of the useful reflection methods
@@ -27,7 +27,7 @@ use Meritoo\Common\Utilities\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class ReflectionTest extends TestCase
+class ReflectionTest extends BaseTestCase
 {
     /**
      * @param mixed $invalidClass Empty value, e.g. ""
diff --git a/tests/Meritoo/Common/Test/Utilities/UriTest.php b/tests/Meritoo/Common/Test/Utilities/UriTest.php
index 611d4fb..179a430 100644
--- a/tests/Meritoo/Common/Test/Utilities/UriTest.php
+++ b/tests/Meritoo/Common/Test/Utilities/UriTest.php
@@ -8,7 +8,7 @@
 
 namespace Meritoo\Common\Test\Utilities;
 
-use Meritoo\Common\Utilities\TestCase;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Utilities\Uri;
 
 /**
@@ -17,7 +17,7 @@ use Meritoo\Common\Utilities\Uri;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class UriTest extends TestCase
+class UriTest extends BaseTestCase
 {
     public function testAddProtocolToUrl()
     {