Make sure the gpu part is only tested when we are actually running on a GPU.

theano/sandbox/cuda/tests/test_var.py

@@ -2,7 +2,7 @@ import numpy
 from nose.plugins.skip import SkipTest
 
 from theano.sandbox.cuda.var import float32_shared_constructor as f32sc
-from theano.sandbox.cuda import CudaNdarrayType, cuda_available
+from theano.sandbox.cuda import CudaNdarrayType, cuda_available, cuda_enabled
 
 import theano
 
@@ -17,6 +17,7 @@ def test_shared_pickle():
     v = numpy.array([1.0, 2.0], dtype='float32')
 
     # This test will always be on the GPU
+    if cuda_enabled:
         assert isinstance(g, theano.tensor.basic.TensorVariable)
         assert isinstance(g.owner, theano.gof.graph.Apply)
         assert isinstance(g.owner.op, theano.sandbox.cuda.HostFromGpu)