Removed quantity from female cycle doens't make sense until animals are weaned

animal.py

@@ -1004,6 +1004,8 @@ class FemaleCycle(ModelSQL, ModelView):
         return self.weaning_event and self.weaning_event.quantity or 0
 
     def get_removed(self, name):
+        if not self.weaning_event:
+            return None
         return self.live + self.fostered - self.weaned
 
     def get_lactating_days(self, name):

tests/scenario_weaning_event_test.rst

@@ -300,6 +300,7 @@ validate them and check females state and female's live values::
     True
     >>> females[0].current_cycle.live
     6
+    >>> females[0].current_cycle.removed
     >>> females[-1].current_cycle.live == (6 + len(females) - 1)
     True
 
@@ -336,6 +337,8 @@ the weaning event doesn't have female, weaned nor lost moves::
     u'unmated'
     >>> female1.current_cycle.weaned
     6
+    >>> female1.current_cycle.removed
+    0
     >>> female1.current_cycle.weaning_event.female_move
     >>> female1.current_cycle.weaning_event.weaned_move
     >>> female1.current_cycle.weaning_event.lost_move
@@ -382,6 +385,8 @@ the weaning event has female and lost moves but not weaned group move::
     u'unmated'
     >>> female2.current_cycle.weaned
     6
+    >>> female2.current_cycle.removed
+    1
     >>> female2.current_cycle.weaning_event.female_move.state
     u'done'
     >>> female2.current_cycle.weaning_event.weaned_move

tests/test_farm.py

@@ -25,23 +25,17 @@ SCENARIOS = [
 
 
 class FarmTestCase(unittest.TestCase):
-    '''
-    Test Farm module.
-    '''
+    'Test Farm module'
 
     def setUp(self):
         trytond.tests.test_tryton.install_module('farm')
 
     def test0005views(self):
-        '''
-        Test views.
-        '''
+        'Test views'
         test_view('farm')
 
     def test0006depends(self):
-        '''
-        Test depends.
-        '''
+        'Test depends'
         test_depends()