diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConsoleCommandPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConsoleCommandPassTest.php
index 17cbf62d0b5b0..3681ca2047c1b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConsoleCommandPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConsoleCommandPassTest.php
@@ -16,7 +16,6 @@
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
-use Symfony\Component\HttpKernel\Bundle\Bundle;
 
 /**
  * @group legacy
@@ -123,7 +122,3 @@ public function testProcessPrivateServicesWithSameCommand()
 class MyCommand extends Command
 {
 }
-
-class ExtensionPresentBundle extends Bundle
-{
-}
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
index 90f31f0b31902..539f585b2658f 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/SecurityUserValueResolverTest.php
@@ -91,11 +91,3 @@ public function testIntegrationNoUser()
         $this->assertSame([null], $argumentResolver->getArguments(Request::create('/'), function (UserInterface $user = null) {}));
     }
 }
-
-abstract class DummyUser implements UserInterface
-{
-}
-
-abstract class DummySubUser extends DummyUser
-{
-}
diff --git a/src/Symfony/Component/Debug/Tests/MockExceptionHandler.php b/src/Symfony/Component/Debug/Tests/MockExceptionHandler.php
deleted file mode 100644
index 2d6ce564d23a4..0000000000000
--- a/src/Symfony/Component/Debug/Tests/MockExceptionHandler.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Debug\Tests;
-
-use Symfony\Component\Debug\ExceptionHandler;
-
-class MockExceptionHandler extends ExceptionHandler
-{
-    public $e;
-
-    public function handle(\Exception $e)
-    {
-        $this->e = $e;
-    }
-}
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/OtherDir/Component1/Dir3/Service3.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/OtherDir/Component1/Dir3/Service3.php
deleted file mode 100644
index ee6498c9d50c5..0000000000000
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/OtherDir/Component1/Dir3/Service3.php
+++ /dev/null
@@ -1,8 +0,0 @@
-<?php
-
-namespace Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\OtherDir\Component1\Dir3;
-
-class Service3
-{
-
-}
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadAbstractBar.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadAbstractBar.php
deleted file mode 100644
index 0b72234aae7a6..0000000000000
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadAbstractBar.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-namespace Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub;
-
-abstract class NoLoadAbstractBar
-{
-}
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadBarInterface.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadBarInterface.php
deleted file mode 100644
index dffb05352b3c0..0000000000000
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadBarInterface.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-namespace Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub;
-
-interface NoLoadBarInterface
-{
-}
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadBarTrait.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadBarTrait.php
deleted file mode 100644
index 5a961ee7684c3..0000000000000
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Prototype/Sub/NoLoadBarTrait.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-namespace Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Sub;
-
-trait NoLoadBarTrait
-{
-}
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
index 6f93957753a49..5cf151ef8401f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
@@ -116,20 +116,6 @@ public function __construct(CollisionInterface $collision)
     }
 }
 
-class CannotBeAutowiredForwardOrder
-{
-    public function __construct(CollisionA $a, CollisionInterface $b, CollisionB $c)
-    {
-    }
-}
-
-class CannotBeAutowiredReverseOrder
-{
-    public function __construct(CollisionA $a, CollisionB $c, CollisionInterface $b)
-    {
-    }
-}
-
 class Lille
 {
 }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
index fe6bc027ac926..40200ee31d0de 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
@@ -1001,14 +1001,3 @@ public function __toString()
 class DefaultResponse extends Response
 {
 }
-
-class ExtendedResponse extends Response
-{
-    public function setLastModified(\DateTime $date = null)
-    {
-    }
-
-    public function getDate()
-    {
-    }
-}
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionLoadedBundle/DependencyInjection/ExtensionLoadedExtension.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionLoadedBundle/DependencyInjection/ExtensionLoadedExtension.php
deleted file mode 100644
index b43bc665a843e..0000000000000
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionLoadedBundle/DependencyInjection/ExtensionLoadedExtension.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\HttpKernel\Tests\Fixtures\ExtensionLoadedBundle\DependencyInjection;
-
-use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\DependencyInjection\Extension\Extension;
-
-class ExtensionLoadedExtension extends Extension
-{
-    public function load(array $configs, ContainerBuilder $container)
-    {
-    }
-}
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionLoadedBundle/ExtensionLoadedBundle.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionLoadedBundle/ExtensionLoadedBundle.php
deleted file mode 100644
index 3af81cb07396d..0000000000000
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionLoadedBundle/ExtensionLoadedBundle.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\HttpKernel\Tests\Fixtures\ExtensionLoadedBundle;
-
-use Symfony\Component\HttpKernel\Bundle\Bundle;
-
-class ExtensionLoadedBundle extends Bundle
-{
-}
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionPresentBundle/Command/BarCommand.php b/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionPresentBundle/Command/BarCommand.php
deleted file mode 100644
index 977976b75f88b..0000000000000
--- a/src/Symfony/Component/HttpKernel/Tests/Fixtures/ExtensionPresentBundle/Command/BarCommand.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-
-namespace Symfony\Component\HttpKernel\Tests\Fixtures\ExtensionPresentBundle\Command;
-
-use Symfony\Component\Console\Command\Command;
-
-/**
- * This command has a required parameter on the constructor and will be ignored by the default Bundle implementation.
- *
- * @see Bundle::registerCommands()
- */
-class BarCommand extends Command
-{
-    public function __construct($example, $name = 'bar')
-    {
-    }
-}
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
index d92fad3f80978..d9c6b8e2ca423 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/GetSetMethodNormalizerTest.php
@@ -756,43 +756,6 @@ public function otherMethod()
     }
 }
 
-class GetCamelizedDummy
-{
-    private $kevinDunglas;
-    private $fooBar;
-    private $bar_foo;
-
-    public function __construct($kevinDunglas = null)
-    {
-        $this->kevinDunglas = $kevinDunglas;
-    }
-
-    public function getKevinDunglas()
-    {
-        return $this->kevinDunglas;
-    }
-
-    public function setFooBar($fooBar)
-    {
-        $this->fooBar = $fooBar;
-    }
-
-    public function getFooBar()
-    {
-        return $this->fooBar;
-    }
-
-    public function setBar_foo($bar_foo)
-    {
-        $this->bar_foo = $bar_foo;
-    }
-
-    public function getBar_foo()
-    {
-        return $this->bar_foo;
-    }
-}
-
 class ObjectConstructorArgsWithPrivateMutatorDummy
 {
     private $foo;
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
index f8d1eb8db8d7f..cfa21b6758a06 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php
@@ -497,18 +497,6 @@ public function getBar()
     }
 }
 
-class PropertyCamelizedDummy
-{
-    private $kevinDunglas;
-    public $fooBar;
-    public $bar_foo;
-
-    public function __construct($kevinDunglas = null)
-    {
-        $this->kevinDunglas = $kevinDunglas;
-    }
-}
-
 class StaticPropertyDummy
 {
     private static $property = 'value';
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php b/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php
deleted file mode 100644
index 8b0d30f571421..0000000000000
--- a/src/Symfony/Component/Validator/Tests/Fixtures/ConstraintAValidator.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Validator\Tests\Fixtures;
-
-use Symfony\Component\Validator\Constraint;
-use Symfony\Component\Validator\ConstraintValidator;
-use Symfony\Component\Validator\Context\ExecutionContextInterface;
-
-class ConstraintAValidator extends ConstraintValidator
-{
-    public static $passedContext;
-
-    public function initialize(ExecutionContextInterface $context)
-    {
-        parent::initialize($context);
-
-        self::$passedContext = $context;
-    }
-
-    public function validate($value, Constraint $constraint)
-    {
-        if ('VALID' != $value) {
-            $this->context->addViolation('message', ['param' => 'value']);
-
-            return;
-        }
-    }
-}
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/FakeClassMetadata.php b/src/Symfony/Component/Validator/Tests/Fixtures/FakeClassMetadata.php
deleted file mode 100644
index 39f54777795cd..0000000000000
--- a/src/Symfony/Component/Validator/Tests/Fixtures/FakeClassMetadata.php
+++ /dev/null
@@ -1,26 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Validator\Tests\Fixtures;
-
-use Symfony\Component\Validator\Mapping\ClassMetadata;
-
-class FakeClassMetadata extends ClassMetadata
-{
-    public function addCustomPropertyMetadata($propertyName, $metadata)
-    {
-        if (!isset($this->members[$propertyName])) {
-            $this->members[$propertyName] = [];
-        }
-
-        $this->members[$propertyName][] = $metadata;
-    }
-}
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/InvalidConstraintValidator.php b/src/Symfony/Component/Validator/Tests/Fixtures/InvalidConstraintValidator.php
deleted file mode 100644
index bd9a5cf6c32dc..0000000000000
--- a/src/Symfony/Component/Validator/Tests/Fixtures/InvalidConstraintValidator.php
+++ /dev/null
@@ -1,16 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\Validator\Tests\Fixtures;
-
-class InvalidConstraintValidator
-{
-}