Added test for special case of get_scalar_constant_value

theano/gpuarray/opt.py

@@ -30,7 +30,7 @@ from theano.tensor.nnet.abstract_conv import (AbstractConv2d,
 from theano.tests.breakpoint import PdbBreakpoint
 
 from .type import (GpuArrayType, GpuArrayConstant, get_context,
-                   ContextNotDefined, GpuArraySharedVariable, GpuArrayVariable)
+                   ContextNotDefined)
 from .basic_ops import (as_gpuarray_variable, infer_context_name,
                         host_from_gpu, GpuToGpu,
                         HostFromGpu, GpuFromHost,

theano/tensor/tests/test_basic.py

@@ -7003,6 +7003,9 @@ class T_get_scalar_constant_value(unittest.TestCase):
         assert get_scalar_constant_value(s) == 3
         s = opt.Shape_i(1)(c)
         assert get_scalar_constant_value(s) == 4
+        d = theano.tensor.constant(numpy.random.rand(1, 1))
+        f = theano.tensor.basic.ScalarFromTensor()(opt.Shape_i(0)(d))
+        assert get_scalar_constant_value(f) == 1
 
     def test_elemwise(self):
         # We test only for a few elemwise, the list of all supported