From fb61c9a765d0605a27f720d7a24d43aa580e109b Mon Sep 17 00:00:00 2001
From: Ross Lawley <ross.lawley@gmail.com>
Date: Thu, 19 May 2011 09:55:34 +0100
Subject: [PATCH] Regression test for mysterious uniqueness constraint when
 inserting into mongoengine

Closes #143  Thanks to tfausak for the test case.
---
 tests/document.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/tests/document.py b/tests/document.py
index dee0b712..f6d8ea49 100644
--- a/tests/document.py
+++ b/tests/document.py
@@ -798,6 +798,25 @@ class DocumentTest(unittest.TestCase):
         self.Person.drop_collection()
         BlogPost.drop_collection()
 
+    def subclasses_and_unique_keys_works(self):
+
+        class A(Document):
+            pass
+
+        class B(A):
+            foo = BooleanField(unique=True)
+
+        A.drop_collection()
+        B.drop_collection()
+
+        A().save()
+        A().save()
+        B(foo=True).save()
+
+        self.assertEquals(A.objects.count(), 2)
+        self.assertEquals(B.objects.count(), 1)
+        A.drop_collection()
+        B.drop_collection()
 
     def tearDown(self):
         self.Person.drop_collection()