diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
index 9c15be5642..e04310cc9a 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
@@ -135,8 +135,8 @@ class PhpMatcherDumperTest extends \PHPUnit_Framework_TestCase
         $collection3 = new RouteCollection();
         $collection3->add('overridden2', new Route('/new'));
         $collection3->add('hey', new Route('/hey/'));
-        $collection1->addCollection($collection2);
         $collection2->addCollection($collection3);
+        $collection1->addCollection($collection2);
         $collection->addCollection($collection1, '/multi');
 
         // "dynamic" prefix
@@ -216,8 +216,8 @@ class PhpMatcherDumperTest extends \PHPUnit_Framework_TestCase
         $collection3 = new RouteCollection();
         $collection3->add('c', new Route('/{var}'));
 
-        $collection1->addCollection($collection2, '/b');
         $collection2->addCollection($collection3, '/c');
+        $collection1->addCollection($collection2, '/b');
         $collection->addCollection($collection1, '/a');
 
         /* test case 2 */
diff --git a/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php b/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
index 16d193e34b..840a1d0dc6 100644
--- a/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
+++ b/src/Symfony/Component/Routing/Tests/RouteCollectionTest.php
@@ -70,8 +70,8 @@ class RouteCollectionTest extends \PHPUnit_Framework_TestCase
         $collection->add('foo', new Route('/foo'));
 
         $collection1 = new RouteCollection();
-        $collection->addCollection($collection1);
         $collection1->add('foo', new Route('/foo1'));
+        $collection->addCollection($collection1);
 
         $this->assertEquals('/foo1', $this->getFirstNamedRoute($collection, 'foo')->getPattern());
     }
@@ -82,8 +82,8 @@ class RouteCollectionTest extends \PHPUnit_Framework_TestCase
         $collection->add('foo', new Route('/foo'));
 
         $collection1 = new RouteCollection();
-        $collection->addCollection($collection1);
         $collection1->add('foo1', new Route('/foo1'));
+        $collection->addCollection($collection1);
 
         $this->assertCount(2, $collection);
     }
@@ -212,19 +212,12 @@ class RouteCollectionTest extends \PHPUnit_Framework_TestCase
         $collection3 = new RouteCollection();
         $collection3->add('foo', $new = new Route('/new'));
 
-        $collection1->addCollection($collection2);
         $collection2->addCollection($collection3);
-
-        $collection1->add('stay', new Route('/stay'));
-
-        $iterator = $collection1->getIterator();
+        $collection1->addCollection($collection2);
 
         $this->assertSame($new, $collection1->get('foo'), '->get() returns new route that overrode previous one');
-        // size of 2 because collection1 contains collection2 and /stay but not /old anymore
-        $this->assertCount(2, $iterator, '->addCollection() removes previous routes when adding new routes with the same name');
-        $this->assertInstanceOf('Symfony\Component\Routing\RouteCollection', $iterator->current(), '->getIterator returns both Routes and RouteCollections');
-        $iterator->next();
-        $this->assertInstanceOf('Symfony\Component\Routing\Route', $iterator->current(), '->getIterator returns both Routes and RouteCollections');
+        // size of 1 because collection1 contains /new but not /old anymore
+        $this->assertCount(1, $collection1->getIterator(), '->addCollection() removes previous routes when adding new routes with the same name');
     }
 
     public function testGet()
@@ -241,63 +234,6 @@ class RouteCollectionTest extends \PHPUnit_Framework_TestCase
         $this->assertNull($collection1->get(0), '->get() does not disclose internal child RouteCollection');
     }
 
-    /**
-     * @expectedException \InvalidArgumentException
-     */
-    public function testCannotSelfJoinCollection()
-    {
-        $collection = new RouteCollection();
-
-        $collection->addCollection($collection);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     */
-    public function testCannotAddExistingCollectionToTree()
-    {
-        $collection1 = new RouteCollection();
-        $collection2 = new RouteCollection();
-        $collection3 = new RouteCollection();
-
-        $collection1->addCollection($collection2);
-        $collection1->addCollection($collection3);
-        $collection2->addCollection($collection3);
-    }
-
-    public function testPatternDoesNotChangeWhenDefinitionOrderChanges()
-    {
-        $collection1 = new RouteCollection();
-        $collection1->add('a', new Route('/a...'));
-        $collection2 = new RouteCollection();
-        $collection2->add('b', new Route('/b...'));
-        $collection3 = new RouteCollection();
-        $collection3->add('c', new Route('/c...'));
-
-        $rootCollection_A = new RouteCollection();
-        $collection2->addCollection($collection3, '/c');
-        $collection1->addCollection($collection2, '/b');
-        $rootCollection_A->addCollection($collection1, '/a');
-
-        // above should mean the same as below
-
-        $collection1 = new RouteCollection();
-        $collection1->add('a', new Route('/a...'));
-        $collection2 = new RouteCollection();
-        $collection2->add('b', new Route('/b...'));
-        $collection3 = new RouteCollection();
-        $collection3->add('c', new Route('/c...'));
-
-        $rootCollection_B = new RouteCollection();
-        $collection1->addCollection($collection2, '/b');
-        $collection2->addCollection($collection3, '/c');
-        $rootCollection_B->addCollection($collection1, '/a');
-
-        // test it now
-
-        $this->assertEquals($rootCollection_A, $rootCollection_B);
-    }
-
     public function testSetHostnamePattern()
     {
         $collection = new RouteCollection();