disable test value during the optimization AND the creation of thunks.

theano/compile/function_module.py

@@ -1475,7 +1475,6 @@ class FunctionMaker(object):
                     optimizer_profile = self.optimize_graph_with_cache(
                         optimizer, inputs, outputs)
                 else:
-                    with theano.configparser.change_flags(compute_test_value="off"):
                     optimizer_profile = optimizer(fgraph)
 
                 end_optimizer = time.time()
@@ -1800,6 +1799,7 @@ def orig_function(inputs, outputs, mode=None, accept_inplace=False,
     fn = None
     try:
         Maker = getattr(mode, 'function_maker', FunctionMaker)
+        with theano.configparser.change_flags(compute_test_value="off"):
             fn = Maker(inputs,
                        outputs,
                        mode,