Issue #1: ordered tree roots should be ordered

src/Concerns/BelongsToOrderedTree.php

@@ -9,6 +9,7 @@ trait BelongsToOrderedTree
     use BelongsToTree {
         children as _children;
         setChildrenFromDescendants as _setChildrenFromDescendants;
+        getTree as _getTree;
     }
     use Orderable;
 
@@ -32,4 +33,13 @@ protected function setChildrenFromDescendants($descendants)
     {
         $this->_setChildrenFromDescendants($descendants->sortBy($this->getOrderColumn()));
     }
+
+    /**
+     * @param int $depth
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public static function getTree($depth = null)
+    {
+        return $this->_getTree($depth)->sortBy($this->getOrderColumn());
+    }
 }

tests/OrderedTreeTest.php

@@ -111,4 +111,22 @@ public function test_ordered_descendants()
         $this->assertEquals($this->items[6]->id, $items[1]->children[1]->children[0]->id);
         $this->assertEquals($this->items[1]->id, $items[1]->children[1]->children[1]->id);
     }
+
+    public function test_tree_order()
+    {
+        // 3     0
+        // 2 7   5 4
+        //         6 1
+
+        $this->setParent([5, 4], 0);
+        $this->setParent([2, 7], 3);
+        $this->setParent([6, 1], 7);
+        $roots = Model::whereIsRoot()->get();
+        $roots[0]->swapWith($roots[1]);
+
+        $tree = Model::getTree();
+        $this->assertEquals($tree[0]->id, $thhis->items[3]->id);
+        $this->assertEquals($tree[0]->children[0]->id, $thhis->items[2]->id);
+        $this->assertEquals($tree[1]->children[1]->children[0]->id, $this->items[6]->id);
+    }
 }