diff --git a/src/Symfony/Component/Console/Tests/Command/CommandTest.php b/src/Symfony/Component/Console/Tests/Command/CommandTest.php
index c2c9b895ee..a5af27ca34 100644
--- a/src/Symfony/Component/Console/Tests/Command/CommandTest.php
+++ b/src/Symfony/Component/Console/Tests/Command/CommandTest.php
@@ -307,13 +307,12 @@ class CommandTest extends \PHPUnit_Framework_TestCase
         );
     }
 
-    /** @dataProvider getSetCodeBindToClosureTests */
+    /**
+     * @dataProvider getSetCodeBindToClosureTests
+     * @requires PHP 5.4
+     */
     public function testSetCodeBindToClosure($previouslyBound, $expected)
     {
-        if (PHP_VERSION_ID < 50400) {
-            $this->markTestSkipped('Test skipped, for PHP 5.4+ only.');
-        }
-
         $code = createClosure();
         if ($previouslyBound) {
             $code = $code->bindTo($this);
diff --git a/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php b/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
index 311ce9d3ef..ddbafe49dc 100644
--- a/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
+++ b/src/Symfony/Component/Form/Tests/Util/StringUtilTest.php
@@ -24,13 +24,10 @@ class StringUtilTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @dataProvider spaceProvider
+     * @requires extension mbstring
      */
     public function testTrimUtf8Separators($hex)
     {
-        if (!function_exists('mb_convert_encoding')) {
-            $this->markTestSkipped('The "mb_convert_encoding" function is not available');
-        }
-
         // Convert hexadecimal representation into binary
         // H: hex string, high nibble first (UCS-2BE)
         // *: repeat until end of string
diff --git a/src/Symfony/Component/HttpKernel/Tests/Profiler/MongoDbProfilerStorageTest.php b/src/Symfony/Component/HttpKernel/Tests/Profiler/MongoDbProfilerStorageTest.php
index 43c79d9cc6..3527f9b41b 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Profiler/MongoDbProfilerStorageTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Profiler/MongoDbProfilerStorageTest.php
@@ -41,6 +41,7 @@ class MongoDbProfilerStorageTestDataCollector extends DataCollector
 
 /**
  * @group legacy
+ * @requires extension mongo
  */
 class MongoDbProfilerStorageTest extends AbstractProfilerStorageTest
 {
@@ -131,10 +132,6 @@ class MongoDbProfilerStorageTest extends AbstractProfilerStorageTest
 
     protected function setUp()
     {
-        if (!extension_loaded('mongo')) {
-            $this->markTestSkipped('MongoDbProfilerStorageTest requires the mongo PHP extension and a MongoDB server on localhost');
-        }
-
         $this->storage = new MongoDbProfilerStorage('mongodb://localhost/symfony_tests/profiler_data', '', '', 86400);
         $m = new \ReflectionMethod($this->storage, 'getMongo');
         $m->setAccessible(true);
diff --git a/src/Symfony/Component/HttpKernel/Tests/Profiler/SqliteProfilerStorageTest.php b/src/Symfony/Component/HttpKernel/Tests/Profiler/SqliteProfilerStorageTest.php
index 8f91ac1ac5..dbdebef6aa 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Profiler/SqliteProfilerStorageTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Profiler/SqliteProfilerStorageTest.php
@@ -15,6 +15,7 @@ use Symfony\Component\HttpKernel\Profiler\SqliteProfilerStorage;
 
 /**
  * @group legacy
+ * @requires extensin pdo_sqlite
  */
 class SqliteProfilerStorageTest extends AbstractProfilerStorageTest
 {
@@ -23,10 +24,6 @@ class SqliteProfilerStorageTest extends AbstractProfilerStorageTest
 
     protected function setUp()
     {
-        if (!class_exists('SQLite3') && (!class_exists('PDO') || !in_array('sqlite', \PDO::getAvailableDrivers()))) {
-            $this->markTestSkipped('This test requires SQLite support in your environment');
-        }
-
         $this->dbFile = tempnam(sys_get_temp_dir(), 'sf2_sqlite_storage');
         if (file_exists($this->dbFile)) {
             @unlink($this->dbFile);
diff --git a/src/Symfony/Component/Ldap/Tests/LdapClientTest.php b/src/Symfony/Component/Ldap/Tests/LdapClientTest.php
index 5b67ea8540..22a548c272 100644
--- a/src/Symfony/Component/Ldap/Tests/LdapClientTest.php
+++ b/src/Symfony/Component/Ldap/Tests/LdapClientTest.php
@@ -13,15 +13,11 @@ namespace Symfony\Component\Security\Core\Tests\Authentication\Provider;
 
 use Symfony\Component\Ldap\LdapClient;
 
+/**
+ * @requires extension ldap
+ */
 class LdapClientTest extends \PHPUnit_Framework_TestCase
 {
-    protected function setUp()
-    {
-        if (!extension_loaded('ldap')) {
-            $this->markTestSkipped('The ldap extension is not available');
-        }
-    }
-
     /**
      * @dataProvider provideLdapEscapeValues
      */
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractors/ReflectionExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractors/ReflectionExtractorTest.php
index ba00d1c792..0740997eed 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractors/ReflectionExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractors/ReflectionExtractorTest.php
@@ -75,13 +75,10 @@ class ReflectionExtractorTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @dataProvider php7TypesProvider
+     * @requires PHP 7.0
      */
     public function testExtractPhp7Type($property, array $type = null)
     {
-        if (!method_exists('\ReflectionMethod', 'getReturnType')) {
-            $this->markTestSkipped('Available only with PHP 7 and superior.');
-        }
-
         $this->assertEquals($type, $this->extractor->getTypes('Symfony\Component\PropertyInfo\Tests\Fixtures\Php7Dummy', $property, array()));
     }
 
diff --git a/src/Symfony/Component/Translation/Tests/Dumper/IcuResFileDumperTest.php b/src/Symfony/Component/Translation/Tests/Dumper/IcuResFileDumperTest.php
index 7122ddd135..7a20c6943d 100644
--- a/src/Symfony/Component/Translation/Tests/Dumper/IcuResFileDumperTest.php
+++ b/src/Symfony/Component/Translation/Tests/Dumper/IcuResFileDumperTest.php
@@ -16,6 +16,9 @@ use Symfony\Component\Translation\Dumper\IcuResFileDumper;
 
 class IcuResFileDumperTest extends \PHPUnit_Framework_TestCase
 {
+    /**
+     * @requires extension mbstring
+     */
     public function testFormatCatalogue()
     {
         if (!function_exists('mb_convert_encoding')) {