diff --git a/registrasion/tests/test_cart.py b/registrasion/tests/test_cart.py
index a4f6a5eb..7b804f64 100644
--- a/registrasion/tests/test_cart.py
+++ b/registrasion/tests/test_cart.py
@@ -362,24 +362,29 @@ class BasicCartTests(RegistrationCartTestCase):
     def test_available_products_respects_product_limits(self):
         self.__available_products_test(self.PROD_4, 6)
 
-    def test_cart_controller_batching(self):
+    def test_cart_controller_for_user_is_memoised(self):
         # - that for_user is memoised
         with BatchController.batch(self.USER_1):
             cart = TestingCartController.for_user(self.USER_1)
             cart_2 = TestingCartController.for_user(self.USER_1)
         self.assertIs(cart, cart_2)
 
-        # - that the revision only increments on modifications
+    def test_cart_revision_does_not_increment_if_not_modified(self):
+        cart = TestingCartController.for_user(self.USER_1)
         rev_0 = cart.cart.revision
+
         with BatchController.batch(self.USER_1):
             # Memoise the cart
             same_cart = TestingCartController.for_user(self.USER_1)
             # Do nothing on exit
+        
         rev_1 = self.reget(cart.cart).revision
         self.assertEqual(rev_0, rev_1)
 
-        # - that the revision only increments on the outside of a batch
+    def test_cart_revision_only_increments_at_end_of_batches(self):
+        cart = TestingCartController.for_user(self.USER_1)
         rev_0 = cart.cart.revision
+
         with BatchController.batch(self.USER_1):
             # Memoise the cart
             same_cart = TestingCartController.for_user(self.USER_1)
@@ -387,17 +392,18 @@ class BasicCartTests(RegistrationCartTestCase):
             rev_1 = self.reget(same_cart.cart).revision
 
         rev_2 = self.reget(cart.cart).revision
-        cart.set_quantity(self.PROD_1, 0)
 
         self.assertEqual(rev_0, rev_1)
         self.assertNotEqual(rev_0, rev_2)
 
-        # - that discounts are only calculated on modifications o/s batch
+    def test_cart_discounts_only_calculated_at_end_of_batches(self):
         def count_discounts(cart):
             return cart.cart.discountitem_set.count()
 
-        count_0 = count_discounts(cart.cart)
+        cart = TestingCartController.for_user(self.USER_1)
         self.make_discount_ceiling("FLOOZLE")
+        count_0 = count_discounts(cart.cart)
+
         with BatchController.batch(self.USER_1):
             # Memoise the cart
             same_cart = TestingCartController.for_user(self.USER_1)