diff --git a/Tests/Schema/FragmentsTest.php b/Tests/Schema/FragmentsTest.php
new file mode 100644
index 00000000..f389627e
--- /dev/null
+++ b/Tests/Schema/FragmentsTest.php
@@ -0,0 +1,212 @@
+<?php
+
+namespace Youshido\Tests\Schema;
+
+use Youshido\GraphQL\Config\Object\InterfaceTypeConfig;
+use Youshido\GraphQL\Config\Object\ObjectTypeConfig;
+use Youshido\GraphQL\Execution\Processor;
+use Youshido\GraphQL\Schema\Schema;
+use Youshido\GraphQL\Type\InterfaceType\AbstractInterfaceType;
+use Youshido\GraphQL\Type\InterfaceType\InterfaceType;
+use Youshido\GraphQL\Type\ListType\ListType;
+use Youshido\GraphQL\Type\NonNullType;
+use Youshido\GraphQL\Type\Object\AbstractObjectType;
+use Youshido\GraphQL\Type\Object\ObjectType;
+use Youshido\GraphQL\Type\Scalar\IdType;
+use Youshido\GraphQL\Type\Scalar\IntType;
+use Youshido\GraphQL\Type\Scalar\StringType;
+
+
+class UserType extends AbstractObjectType
+{
+    public function build($config)
+    {
+        $config->addFields([
+            'id'           => new IdType(),
+            'fullName'     => new StringType(),
+            'reservations' => new ListType(new ReservationInterface())
+        ]);
+    }
+}
+
+class CourtReservation extends AbstractObjectType
+{
+
+    public function build($config)
+    {
+        $config->addFields([
+            'id'      => new IdType(),
+            'players' => new ListType(new ObjectType([
+                'name'   => 'Player',
+                'fields' => [
+                    'id'   => new IdType(),
+                    'user' => new UserType()
+                ]
+            ]))
+        ]);
+    }
+
+    public function getInterfaces()
+    {
+        return [new ReservationInterface()];
+    }
+
+}
+
+class ClassReservation extends AbstractObjectType
+{
+    public function build($config)
+    {
+        $config->addFields([
+            'id'   => new IdType(),
+            'user' => new UserType()
+        ]);
+    }
+
+    public function getInterfaces()
+    {
+        return [new ReservationInterface()];
+    }
+}
+
+class ReservationInterface extends AbstractInterfaceType
+{
+    public function resolveType($object)
+    {
+        return strpos($object['id'], 'cl') === false ? new CourtReservation() : new ClassReservation();
+    }
+
+    public function build($config)
+    {
+        $config->addFields([
+            'id' => new IdType()
+        ]);
+    }
+
+}
+
+class FragmentsTest extends \PHPUnit_Framework_TestCase
+{
+
+    /**
+     * @dataProvider queries
+     *
+     * @param $query
+     * @param $expected
+     * @param $variables
+     */
+    public function testVariables($query, $expected, $variables)
+    {
+        $schema = new Schema([
+            'query' => new ObjectType([
+                'name'   => 'RootQuery',
+                'fields' => [
+                    'user' => [
+                        'type'    => new UserType(),
+                        'resolve' => function ($args) {
+                            return [
+                                'id'           => 'user-id-1',
+                                'fullName'     => 'Alex',
+                                'reservations' => [
+                                    [
+                                        'id'   => 'cl-1',
+                                        'user' => [
+                                            'id'       => 'user-id-2',
+                                            'fullName' => 'User class1'
+                                        ],
+                                    ],
+                                    [
+                                        'id'      => 'court-1',
+                                        'players' => [
+                                            [
+                                                'id'       => 'player-id-1',
+                                                'user' => [
+                                                    'id' => 'user-id-3',
+                                                    'fullName' => 'User court1'
+                                                ]
+                                            ]
+                                        ]
+                                    ],
+                                ]
+                            ];
+                        },
+                    ],
+                ]
+            ])
+        ]);
+
+        $processor = new Processor($schema);
+        $processor->processPayload($query, $variables);
+        $result = $processor->getResponseData();
+
+        $this->assertEquals($expected, $result);
+    }
+
+    public function queries()
+    {
+        return [
+            [
+                'query {
+                    user {
+                        ...fUser
+                        reservations {
+                            ...fReservation
+                        }
+                    }
+                }
+                fragment fReservation on Reservation {
+                    id
+                    ... on CourtReservation {
+                        players {
+                            id
+                            user {
+                                ...fUser
+                            }
+                        }
+                    }
+                    ... on ClassReservation {
+                        user {
+                            ...fUser
+                        }
+                    }
+                }
+                fragment fUser on User {
+                    id
+                    fullName
+                }',
+                [
+                    'data' => [
+                        'user' => [
+                            'id'           => 'user-id-1',
+                            'fullName'     => 'Alex',
+                            'reservations' => [
+                                [
+                                    'id'   => 'cl-1',
+                                    'user' => [
+                                        'id'       => 'user-id-2',
+                                        'fullName' => 'User class1'
+                                    ]
+                                ],
+                                [
+                                    'id'      => 'court-1',
+                                    'players' => [
+                                        [
+                                            'id'       => 'player-id-1',
+                                            'user' => [
+                                                'id' => 'user-id-3',
+                                                'fullName' => 'User court1'
+                                            ]
+                                        ]
+                                    ]
+                                ],
+                            ]
+                        ]
+                    ],
+                ],
+                [
+                ]
+            ],
+        ];
+    }
+
+}
\ No newline at end of file