diff --git a/tests/test_transforms.py b/tests/test_transforms.py
index 225f1b9d..ec731667 100644
--- a/tests/test_transforms.py
+++ b/tests/test_transforms.py
@@ -104,12 +104,13 @@ class TestEventWindow(TestCase):
             window.update(message)
 
             # Assert that we've added the correct number of events.
-            assert len(window.added) == num
+            self.assertTrue(len(window.added), num)
 
             # Assert that we removed only events that fall outside (or
             # on the boundary of) the delta.
             for dropped in window.removed:
-                assert message.dt - dropped.dt >= timedelta(minutes=5)
+                self.assertTrue(
+                    message.dt - dropped.dt >= timedelta(minutes=5))
 
     def test_market_aware_window_normal_week(self):
         window = NoopEventWindow(
@@ -129,9 +130,9 @@ class TestEventWindow(TestCase):
         # to drop events until the weekend ends. The last window is
         # briefly longer because it doesn't complete a full day.  The
         # window then shrinks once the day completes
-        assert lengths == [1, 2, 3, 3, 3, 4, 5, 5, 5, 3, 4, 3]
-        assert window.added == events
-        assert window.removed == events[:-3]
+        self.assertEquals(lengths, [1, 2, 3, 3, 3, 4, 5, 5, 5, 3, 4, 3])
+        self.assertEquals(window.added, events)
+        self.assertEquals(window.removed, events[:-3])
 
     def test_market_aware_window_holiday(self):
         window = NoopEventWindow(
@@ -148,9 +149,9 @@ class TestEventWindow(TestCase):
             # Record the length of the window after each event.
             lengths.append(len(window.ticks))
 
-        assert lengths == [1, 2, 3, 3, 2]
-        assert window.added == events
-        assert window.removed == events[:-2]
+        self.assertEquals(lengths, [1, 2, 3, 3, 2])
+        self.assertEquals(window.added, events)
+        self.assertEquals(window.removed, events[:-2])
 
     def tearDown(self):
         setup_logger(self)
@@ -195,7 +196,7 @@ class TestFinanceTransforms(TestCase):
         ]
 
         # Output should match the expected.
-        assert tnfm_vals == expected
+        self.assertEquals(tnfm_vals, expected)
 
     def test_returns(self):
         # Daily returns.
@@ -208,7 +209,7 @@ class TestFinanceTransforms(TestCase):
         # previous close.
         expected = [0.0, 0.0, 0.1, 0.0]
 
-        assert tnfm_vals == expected
+        self.assertEquals(tnfm_vals, expected)
 
         # Two-day returns.  An extra kink here is that the
         # factory will automatically skip a weekend for the
@@ -236,7 +237,7 @@ class TestFinanceTransforms(TestCase):
             (13.0 - 13.0) / 13.0
         ]
 
-        assert tnfm_vals == expected
+        self.assertEquals(tnfm_vals, expected)
 
     def test_moving_average(self):
 
@@ -271,8 +272,8 @@ class TestFinanceTransforms(TestCase):
             ((100.0 + 300.0) / 2.0)
         ]
 
-        assert tnfm_prices == expected_prices
-        assert tnfm_volumes == expected_volumes
+        self.assertEquals(tnfm_prices, expected_prices)
+        self.assertEquals(tnfm_volumes, expected_volumes)
 
     def test_moving_stddev(self):
         trade_history = factory.create_trade_history(
@@ -305,9 +306,9 @@ class TestFinanceTransforms(TestCase):
         for v1, v2 in zip(vals, expected):
 
             if v1 is None:
-                assert v2 is None
+                self.assertIsNone(v2)
                 continue
-            assert round(v1, 5) == round(v2, 5)
+            self.assertEquals(round(v1, 5), round(v2, 5))
 
 
 ############################################################