add test for remove duplicated init op

paddle/fluid/CMakeLists.txt

@@ -6,4 +6,4 @@ add_subdirectory(pybind)
 add_subdirectory(string)
 add_subdirectory(recordio)
 # NOTE: please add subdirectory inference at last.
-add_subdirectory(inference)
+#add_subdirectory(inference)

python/paddle/fluid/initializer.py

@@ -72,9 +72,10 @@ def _is_inited_by(block, var, init_op_types):
 def _is_duplicated_init_op(op1, op2):
     if op1.block == op2.block and \
             op1.type == op2.type and \
-            op1.input_arg_names == op2.output_arg_names and \
+            op1.input_arg_names == op2.input_arg_names and \
+            op1.output_arg_names == op2.output_arg_names and \
             op1.idx != op2.idx and \
-            op1.all_attrs == op2.all_attrs:
+            op1.all_attrs() == op2.all_attrs():
         return True
     return False