More error information.

theano/tensor/tests/test_elemwise.py

@@ -419,7 +419,7 @@ class test_CAReduce(unittest_tools.InferShapeTester):
                     try:
                         f_xv = f(xv)
                         self.assertTrue((f_xv.shape == zv.shape), (f_xv, zv))
-                        self.assertTrue(numpy.allclose(f_xv, zv), (f_xv, zv))
+                        self.assertTrue(numpy.allclose(f_xv, zv), (f_xv, zv, xsh, tosum))
                     except NotImplementedError:
                         # GpuCAReduce don't implement all cases when size is 0
                         assert xv.size == 0