Allow using '__' in factory.SelfAttribute.

Signed-off-by: Raphaël Barrois <raphael.barrois@polytechnique.org>

1 files changed, 40 insertions, 1 deletions

diff --git a/tests/test_declarations.py b/tests/test_declarations.py
index dcee38b..0fcdf10 100644
--- a/tests/test_declarations.py
+++ b/tests/test_declarations.py
@@ -22,12 +22,51 @@
 
 import unittest
 
-from factory.declarations import OrderedDeclaration, Sequence
+from factory.declarations import dig, OrderedDeclaration, Sequence
 
 class OrderedDeclarationTestCase(unittest.TestCase):
     def test_errors(self):
         decl = OrderedDeclaration()
         self.assertRaises(NotImplementedError, decl.evaluate, None, {})
 
+
+class DigTestCase(unittest.TestCase):
+    class MyObj(object):
+        def __init__(self, n):
+            self.n = n
+
+    def test_parentattr(self):
+        obj = self.MyObj(1)
+        obj.a__b__c = self.MyObj(2)
+        obj.a = self.MyObj(3)
+        obj.a.b = self.MyObj(4)
+        obj.a.b.c = self.MyObj(5)
+
+        self.assertEqual(2, dig(obj, 'a__b__c').n)
+
+    def test_private(self):
+        obj = self.MyObj(1)
+        self.assertEqual(obj.__class__, dig(obj, '__class__'))
+
+    def test_chaining(self):
+        obj = self.MyObj(1)
+        obj.a = self.MyObj(2)
+        obj.a__c = self.MyObj(3)
+        obj.a.b = self.MyObj(4)
+        obj.a.b.c = self.MyObj(5)
+
+        self.assertEqual(2, dig(obj, 'a').n)
+        self.assertRaises(AttributeError, dig, obj, 'b')
+        self.assertEqual(2, dig(obj, 'a__n'))
+        self.assertEqual(3, dig(obj, 'a__c').n)
+        self.assertRaises(AttributeError, dig, obj, 'a__c__n')
+        self.assertRaises(AttributeError, dig, obj, 'a__d')
+        self.assertEqual(4, dig(obj, 'a__b').n)
+        self.assertEqual(4, dig(obj, 'a__b__n'))
+        self.assertEqual(5, dig(obj, 'a__b__c').n)
+        self.assertEqual(5, dig(obj, 'a__b__c__n'))
+
+
+
 if __name__ == '__main__':
     unittest.main()