Fix ordering of tests

tests/test_utils.py

@@ -44,17 +44,14 @@ def test_freeze_unfreeze():
     assert isinstance(model.layer1[0].bn1, BatchNorm2d)
     assert model.layer2[0].conv1.weight.requires_grad == True
 
-    # Freeze BN
+    # Freeze/unfreeze BN
     # From root
     freeze(model, ['layer1.0.bn1'])
     assert isinstance(model.layer1[0].bn1, FrozenBatchNorm2d)
-    # From direct parent
-    freeze(model.layer1[0], ['bn1'])
-    assert isinstance(model.layer1[0].bn1, FrozenBatchNorm2d)
-
-    # Unfreeze BN
     unfreeze(model, ['layer1.0.bn1'])
     assert isinstance(model.layer1[0].bn1, BatchNorm2d)
     # From direct parent
+    freeze(model.layer1[0], ['bn1'])
+    assert isinstance(model.layer1[0].bn1, FrozenBatchNorm2d)    
     unfreeze(model.layer1[0], ['bn1'])
     assert isinstance(model.layer1[0].bn1, BatchNorm2d)