add tests fro tree

rail/tests/test_tree.py

@@ -0,0 +1,24 @@
+import unittest
+
+from rail import Tree
+
+class TestTree(unittest.TestCase):
+    def setUp(self):
+        self.tree = Tree(name='test tree')
+        self.tree.addChild('test child')
+
+    def test_tree(self):
+        self.assertEqual(self.tree.name, 'test tree')
+        self.assertEqual(self.tree.parent, None)
+        self.assertEqual(self.tree['test child'].name, 'test child')
+        self.assertEqual(self.tree['test child'].parent, self.tree)
+
+    def test_path(self):
+        self.assertEqual(self.tree['test child'].path(), '/test tree/test child')
+
+    def test_to_dict_list(self):
+        self.assertEqual(self.tree.to_dict_list(), {'name': 'test tree', 'children': [{'name': 'test child', 'children': []}]})
+
+if __name__ == '__main__':
+    unittest.main()
+