Fix error info (#23891)

* fix error info for rnn related api

* passed local test, test=develop

* double check the code

* double check the code, test=develop

* update 'shape' check in RNNCell, test=develop

* add long dtype to RNNCell

* fix long type in python3
Co-authored-by: NXingWu01 <wuxing@iie.ac.cn>

python/paddle/fluid/layers/nn.py

@@ -14223,6 +14223,9 @@ def gather_tree(ids, parents):
             final_sequences = fluid.layers.gather_tree(ids, parents)
     """
     helper = LayerHelper('gather_tree', **locals())
+    check_variable_and_dtype(ids, 'ids', ['int32', 'int64'], 'gather_tree')
+    check_variable_and_dtype(parents, 'parents', ['int32', 'int64'],
+                             'gather_tree')
     out = helper.create_variable_for_type_inference(dtype=ids.dtype)
 
     helper.append_op(

python/paddle/fluid/layers/rnn.py

@@ -29,6 +29,7 @@ from ..data_feeder import convert_dtype
 from ..layer_helper import LayerHelper
 from ..framework import in_dygraph_mode
 from ..param_attr import ParamAttr
+from ..data_feeder import check_variable_and_dtype, check_type, check_dtype
 
 __all__ = [
     'RNNCell',
@@ -89,7 +90,7 @@ class RNNCell(object):
     def get_initial_states(self,
                            batch_ref,
                            shape=None,
-                           dtype=None,
+                           dtype='float32',
                            init_value=0,
                            batch_dim_idx=0):
         """
@@ -106,9 +107,9 @@ class RNNCell(object):
                 property `state_shape` will be used. The default value is None.
             dtype: A (possibly nested structure of) data type[s]. The structure
                 must be same as that of `shape`, except when all tensors' in states
-                has the same data type, a single data type can be used. If None and
+                has the same data type, a single data type can be used. If
                 property `cell.state_shape` is not available, float32 will be used
-                as the data type. The default value is None.
+                as the data type. The default value is float32.
             init_value: A float value used to initialize states.
             batch_dim_idx: An integer indicating which dimension of the tensor in
                 inputs represents batch size.  The default value is 0.
@@ -117,6 +118,26 @@ class RNNCell(object):
             Variable: tensor variable[s] packed in the same structure provided \
                 by shape, representing the initialized states.
         """
+        if sys.version_info < (3, ):
+            integer_types = (
+                int,
+                long, )
+        else:
+            integer_types = (int, )
+        check_variable_and_dtype(batch_ref, 'batch_ref',
+                                 ['float32', 'float64'], 'RNNCell')
+        check_type(shape, 'shape', (list, tuple, type(None), integer_types),
+                   'RNNCell')
+        if isinstance(shape, (list, tuple)):
+            shapes = map_structure(lambda x: x, shape)
+            if isinstance(shape, list):
+                for i, _shape in enumerate(shapes):
+                    check_type(_shape, 'shapes[' + str(i) + ']', integer_types,
+                               'RNNCell')
+            else:
+                check_type(shapes, 'shapes', integer_types, 'RNNCell')
+        check_dtype(dtype, 'dtype', ['float32', 'float64'], 'RNNCell')
+
         # TODO: use inputs and batch_size
         batch_ref = flatten(batch_ref)[0]
 
@@ -250,6 +271,8 @@ class GRUCell(RNNCell):
             dtype(string, optional): The data type used in this cell. Default float32.
             name(string, optional) : The name scope used to identify parameters and biases.
         """
+        check_type(hidden_size, 'hidden_size', (int), 'GRUCell')
+        check_dtype(dtype, 'dtype', ['float32', 'float64'], 'GRUCell')
         self.hidden_size = hidden_size
         from .. import contrib  # TODO: resolve recurrent import
         self.gru_unit = contrib.layers.rnn_impl.BasicGRUUnit(
@@ -263,10 +286,10 @@ class GRUCell(RNNCell):
         Parameters:
             inputs(Variable): A tensor with shape `[batch_size, input_size]`,
                 corresponding to :math:`x_t` in the formula. The data type
-                should be float32.
+                should be float32 or float64.
             states(Variable): A tensor with shape `[batch_size, hidden_size]`.
                 corresponding to :math:`h_{t-1}` in the formula. The data type
-                should be float32.
+                should be float32 or float64.
 
         Returns:
             tuple: A tuple( :code:`(outputs, new_states)` ), where `outputs` and \
@@ -274,6 +297,11 @@ class GRUCell(RNNCell):
                 corresponding to :math:`h_t` in the formula. The data type of the \
                 tensor is same as that of `states`.        
         """
+
+        check_variable_and_dtype(inputs, 'inputs', ['float32', 'float64'],
+                                 'GRUCell')
+        check_variable_and_dtype(states, 'states', ['float32', 'float64'],
+                                 'GRUCell')
         new_hidden = self.gru_unit(inputs, states)
         return new_hidden, new_hidden
 
@@ -343,6 +371,9 @@ class LSTMCell(RNNCell):
             dtype(string, optional): The data type used in this cell. Default float32.
             name(string, optional) : The name scope used to identify parameters and biases.
         """
+
+        check_type(hidden_size, 'hidden_size', (int), 'LSTMCell')
+        check_dtype(dtype, 'dtype', ['float32', 'float64'], 'LSTMCell')
         self.hidden_size = hidden_size
         from .. import contrib  # TODO: resolve recurrent import
         self.lstm_unit = contrib.layers.rnn_impl.BasicLSTMUnit(
@@ -356,10 +387,10 @@ class LSTMCell(RNNCell):
         Parameters:
             inputs(Variable): A tensor with shape `[batch_size, input_size]`,
                 corresponding to :math:`x_t` in the formula. The data type
-                should be float32.
+                should be float32 or float64.
             states(Variable): A list of containing two tensors, each shaped
                 `[batch_size, hidden_size]`, corresponding to :math:`h_{t-1}, c_{t-1}`
-                in the formula. The data type should be float32.
+                in the formula. The data type should be float32 or float64.
 
         Returns:
             tuple: A tuple( :code:`(outputs, new_states)` ), where `outputs` is \
@@ -369,6 +400,15 @@ class LSTMCell(RNNCell):
                 to :math:`h_{t}, c_{t}` in the formula. The data type of these \
                 tensors all is same as that of `states`.
         """
+
+        check_variable_and_dtype(inputs, 'inputs', ['float32', 'float64'],
+                                 'LSTMCell')
+        check_type(states, 'states', list, 'LSTMCell')
+        if isinstance(states, list):
+            for i, state in enumerate(states):
+                check_variable_and_dtype(state, 'state[' + str(i) + ']',
+                                         ['float32', 'float64'], 'LSTMCell')
+
         pre_hidden, pre_cell = states
         new_hidden, new_cell = self.lstm_unit(inputs, pre_hidden, pre_cell)
         return new_hidden, [new_hidden, new_cell]
@@ -444,6 +484,20 @@ def rnn(cell,
             cell = fluid.layers.GRUCell(hidden_size=128)
             outputs = fluid.layers.rnn(cell=cell, inputs=inputs)
     """
+    check_type(inputs, 'inputs', (Variable, list, tuple), 'rnn')
+    if isinstance(inputs, (list, tuple)):
+        for i, input_x in enumerate(inputs):
+            check_variable_and_dtype(input_x, 'inputs[' + str(i) + ']',
+                                     ['float32', 'float64'], 'rnn')
+    check_type(initial_states, 'initial_states',
+               (Variable, list, tuple, type(None)), 'rnn')
+    if isinstance(initial_states, (list, tuple)):
+        states = map_structure(lambda x: x, initial_states)[0]
+        for i, state in enumerate(states):
+            check_variable_and_dtype(state, 'states[' + str(i) + ']',
+                                     ['float32', 'float64'], 'rnn')
+    check_type(sequence_length, 'sequence_length', (Variable, type(None)),
+               'rnn')
 
     def _maybe_copy(state, new_state, step_mask):
         # TODO: use where_op
@@ -775,7 +829,7 @@ class BeamSearchDecoder(Decoder):
 
         Parameters:
             probs(Variable): A tensor with shape `[batch_size, ...]`, representing
-                the log probabilities. Its data type should be float32.
+                the log probabilities. Its data type should be float32 or float64.
             finished(Variable): A tensor with shape `[batch_size, beam_size]`,
                 representing the finished status for all beams. Its data type
                 should be bool.
@@ -797,7 +851,7 @@ class BeamSearchDecoder(Decoder):
 
         Parameters:
             probs(Variable): A tensor with shape `[batch_size, beam_size, vocab_size]`,
-                representing the log probabilities. Its data type should be float32.
+                representing the log probabilities. Its data type should be float32 or float64.
             finished(Variable): A tensor with shape `[batch_size, beam_size]`,
                 representing the finished status for all beams. Its data type
                 should be bool.
@@ -2170,7 +2224,12 @@ def lstm(input,
     """
 
     helper = LayerHelper('cudnn_lstm', **locals())
-
+    check_variable_and_dtype(input, 'input', ['float32', 'float64'], 'lstm')
+    check_variable_and_dtype(init_h, 'init_h', ['float32', 'float64'], 'lstm')
+    check_variable_and_dtype(init_c, 'init_c', ['float32', 'float64'], 'lstm')
+    check_type(max_len, 'max_len', (int), 'lstm')
+    check_type(hidden_size, 'hidden_size', (int), 'lstm')
+    check_type(num_layers, 'num_layers', (int), 'lstm')
     dtype = input.dtype
     input_shape = list(input.shape)
     input_size = input_shape[-1]
@@ -2695,6 +2754,10 @@ def gru_unit(input,
                 input=x, hidden=pre_hidden, size=hidden_dim * 3)
 
     """
+    check_variable_and_dtype(input, 'input', ['float32', 'float64'], 'gru_unit')
+    check_variable_and_dtype(hidden, 'hidden', ['float32', 'float64'],
+                             'gru_unit')
+    check_type(size, 'size', (int), 'gru_unit')
     activation_dict = dict(
         identity=0,
         sigmoid=1,
@@ -2784,7 +2847,7 @@ def beam_search(pre_ids,
         pre_scores(Variable): A LodTensor variable has the same shape and lod
             with ``pre_ids`` , representing the accumulated scores corresponding
             to the selected ids of previous step. It is the output of
-            beam_search at previous step. The data type should be float32.
+            beam_search at previous step. The data type should be float32 or float64.
         ids(Variable|None): A LodTensor variable containing the candidates ids.
             It has the same lod with ``pre_ids`` and its shape should be
             `[batch_size * beam_size, K]`, where `K` supposed to be greater than
@@ -2794,7 +2857,7 @@ def beam_search(pre_ids,
             ids.
         scores(Variable): A LodTensor variable containing the accumulated
             scores corresponding to ``ids`` . Both its shape and lod are same as
-            those of ``ids`` . The data type should be float32.
+            those of ``ids`` . The data type should be float32 or float64.
         beam_size(int): The beam width used in beam search.
         end_id(int): The id of end token.
         level(int): **It can be ignored and mustn't change currently.**
@@ -3050,7 +3113,11 @@ def lstm_unit(x_t,
                 cell_t_prev=pre_cell)
     """
     helper = LayerHelper('lstm_unit', **locals())
-
+    check_variable_and_dtype(x_t, 'x_t', ['float32', 'float64'], 'lstm_unit')
+    check_variable_and_dtype(hidden_t_prev, 'hidden_t_prev',
+                             ['float32', 'float64'], 'lstm_unit')
+    check_variable_and_dtype(cell_t_prev, 'cell_t_prev',
+                             ['float32', 'float64'], 'lstm_unit')
     if len(x_t.shape) != 2:
         raise ValueError("Rank of x_t must be 2.")
 

python/paddle/fluid/tests/unittests/test_gather_tree_op.py

@@ -18,6 +18,7 @@ import unittest
 import numpy as np
 from op_test import OpTest
 import paddle.fluid as fluid
+from paddle.fluid.framework import program_guard, Program
 
 
 class TestGatherTreeOp(OpTest):
@@ -61,5 +62,56 @@ class TestGatherTreeOpAPI(unittest.TestCase):
         final_sequences = fluid.layers.gather_tree(ids, parents)
 
 
+class TestGatherTreeOpError(unittest.TestCase):
+    def test_errors(self):
+        with program_guard(Program(), Program()):
+            ids = fluid.layers.data(
+                name='ids',
+                shape=[5, 2, 2],
+                dtype='int64',
+                append_batch_size=False)
+            parents = fluid.layers.data(
+                name='parents',
+                shape=[5, 2, 2],
+                dtype='int64',
+                append_batch_size=False)
+
+            def test_Variable_ids():
+                # the input type must be Variable
+                np_ids = np.random.random((5, 2, 2), dtype='int64')
+                fluid.layers.gather_tree(np_ids, parents)
+
+            self.assertRaises(TypeError, test_Variable_ids)
+
+            def test_Variable_parents():
+                # the input type must be Variable
+                np_parents = np.random.random((5, 2, 2), dtype='int64')
+                fluid.layers.gather_tree(ids, np_parents)
+
+            self.assertRaises(TypeError, test_Variable_parents)
+
+            def test_type_ids():
+                # dtype must be int32 or int64
+                bad_ids = fluid.layers.data(
+                    name='bad_ids',
+                    shape=[5, 2, 2],
+                    dtype='float32',
+                    append_batch_size=False)
+                fluid.layers.gather_tree(bad_ids, parents)
+
+            self.assertRaises(TypeError, test_type_ids)
+
+            def test_type_parents():
+                # dtype must be int32 or int64
+                bad_parents = fluid.layers.data(
+                    name='bad_parents',
+                    shape=[5, 2, 2],
+                    dtype='float32',
+                    append_batch_size=False)
+                fluid.layers.gather_tree(ids, bad_parents)
+
+            self.assertRaises(TypeError, test_type_parents)
+
+
 if __name__ == "__main__":
     unittest.main()

python/paddle/fluid/tests/unittests/test_gru_unit_op.py

@@ -19,6 +19,9 @@ import unittest
 import numpy as np
 import paddle.fluid as fluid
 from op_test import OpTest
+from paddle import fluid
+from paddle.fluid.layers import gru_unit
+from paddle.fluid.framework import program_guard, Program
 
 
 class TestGRUUnitAPIError(unittest.TestCase):
@@ -59,6 +62,49 @@ def relu(x):
     return np.maximum(x, 0)
 
 
+class TestGRUUnitOpError(unittest.TestCase):
+    def test_errors(self):
+        with program_guard(Program(), Program()):
+            batch_size = 5
+            hidden_dim = 40
+            input = fluid.data(
+                name='input', shape=[None, hidden_dim * 3], dtype='float32')
+            pre_hidden = fluid.data(
+                name='pre_hidden', shape=[None, hidden_dim], dtype='float32')
+            np_input = np.random.uniform(
+                -0.1, 0.1, (batch_size, hidden_dim * 3)).astype('float64')
+            np_pre_hidden = np.random.uniform(
+                -0.1, 0.1, (batch_size, hidden_dim)).astype('float64')
+
+            def test_input_Variable():
+                gru_unit(np_input, pre_hidden, hidden_dim * 3)
+
+            self.assertRaises(TypeError, test_input_Variable)
+
+            def test_pre_hidden_Variable():
+                gru_unit(input, np_pre_hidden, hidden_dim * 3)
+
+            self.assertRaises(TypeError, test_pre_hidden_Variable)
+
+            def test_input_type():
+                error_input = fluid.data(
+                    name='error_input',
+                    shape=[None, hidden_dim * 3],
+                    dtype='int32')
+                gru_unit(error_input, pre_hidden, hidden_dim * 3)
+
+            self.assertRaises(TypeError, test_input_type)
+
+            def test_pre_hidden_type():
+                error_pre_hidden = fluid.data(
+                    name='error_pre_hidden',
+                    shape=[None, hidden_dim],
+                    dtype='int32')
+                gru_unit(input, error_pre_hidden, hidden_dim * 3)
+
+            self.assertRaises(TypeError, test_pre_hidden_type)
+
+
 class TestGRUUnitOp(OpTest):
     batch_size = 5
     frame_size = 40

python/paddle/fluid/tests/unittests/test_lstm_op.py

@@ -17,6 +17,9 @@ from __future__ import print_function
 import unittest
 import numpy as np
 from op_test import OpTest
+from paddle import fluid
+from paddle.fluid.layers import lstm, fill_constant
+from paddle.fluid.framework import program_guard, Program
 
 SIGMOID_THRESHOLD_MIN = -40.0
 SIGMOID_THRESHOLD_MAX = 13.0
@@ -126,6 +129,87 @@ def lstm(
     return hidden, cell
 
 
+class LstmUnitTestError(unittest.TestCase):
+    def test_errors(self):
+        with program_guard(Program(), Program()):
+            batch_size = 20
+            seq_len = 100
+            dropout_prob = 0.2
+            hidden_size = 150
+            num_layers = 1
+            input = fluid.data(
+                name='input',
+                shape=[batch_size, seq_len, hidden_size],
+                dtype='float32')
+            pre_hidden = fill_constant([num_layers, batch_size, hidden_size],
+                                       'float32', 0.0)
+            pre_cell = fill_constant([num_layers, batch_size, hidden_size],
+                                     'float32', 0.0)
+
+            np_input = np.random.uniform(
+                -0.1, 0.1, (batch_size, seq_len, hidden_size)).astype('float64')
+            np_pre_hidden = np.random.uniform(
+                -0.1, 0.1,
+                (num_layers, batch_size, hidden_size)).astype('float64')
+            np_pre_cell = np.random.uniform(
+                -0.1, 0.1,
+                (num_layers, batch_size, hidden_size)).astype('float64')
+
+            def test_input_Variable():
+                lstm(np_input, pre_hidden, pre_cell, \
+                    seq_len, hidden_size, num_layers, \
+                    dropout_prob=dropout_prob)
+
+            self.assertRaises(TypeError, test_input_Variable)
+
+            def test_pre_hidden_Variable():
+                lstm(np_input, np_pre_hidden, pre_cell, \
+                    seq_len, hidden_size, num_layers, \
+                    dropout_prob=dropout_prob)
+
+            self.assertRaises(TypeError, test_pre_hidden_Variable)
+
+            def test_pre_cell_Variable():
+                lstm(np_input, pre_hidden, np_pre_cell, \
+                    seq_len, hidden_size, num_layers, \
+                    dropout_prob=dropout_prob)
+
+            self.assertRaises(TypeError, test_pre_cell_Variable)
+
+            def test_input_type():
+                error_input = fluid.data(
+                    name='error_input',
+                    shape=[None, hidden_size * 3],
+                    dtype='int32')
+                lstm(error_input, pre_hidden, pre_cell, \
+                    seq_len, hidden_size, num_layers, \
+                    dropout_prob=dropout_prob)
+
+            self.assertRaises(TypeError, test_input_type)
+
+            def test_pre_hidden_type():
+                error_pre_hidden = fluid.data(
+                    name='error_pre_hidden',
+                    shape=[None, hidden_size],
+                    dtype='int32')
+                lstm(input, error_pre_hidden, pre_cell, \
+                    seq_len, hidden_size, num_layers, \
+                    dropout_prob=dropout_prob)
+
+            self.assertRaises(TypeError, test_pre_hidden_type)
+
+            def test_pre_cell_type():
+                error_pre_cell = fluid.data(
+                    name='error_pre_cell',
+                    shape=[None, hidden_size],
+                    dtype='int32')
+                lstm(input, pre_hidden, error_pre_cell, \
+                    seq_len, hidden_size, num_layers, \
+                    dropout_prob=dropout_prob)
+
+            self.assertRaises(TypeError, test_pre_cell_type)
+
+
 class TestLstmOp(OpTest):
     def set_lod(self):
         self.lod = [[2, 3, 2]]

python/paddle/fluid/tests/unittests/test_lstm_unit_op.py

@@ -17,6 +17,9 @@ from __future__ import print_function
 import unittest
 import numpy as np
 from op_test import OpTest
+from paddle import fluid
+from paddle.fluid.layers import lstm_unit
+from paddle.fluid.framework import program_guard, Program
 
 
 def sigmoid_np(x):
@@ -27,11 +30,77 @@ def tanh_np(x):
     return 2 * sigmoid_np(2. * x) - 1.
 
 
+class LstmUnitTestError(unittest.TestCase):
+    def test_errors(self):
+        with program_guard(Program(), Program()):
+            batch_size, dict_dim, emb_dim, hidden_dim = 32, 128, 64, 512
+            data = fluid.data(
+                name='step_data', shape=[batch_size], dtype='int64')
+            inputs = fluid.embedding(input=data, size=[dict_dim, emb_dim])
+            pre_hidden = fluid.data(
+                name='pre_hidden',
+                shape=[batch_size, hidden_dim],
+                dtype='float32')
+            pre_cell = fluid.data(
+                name='pre_cell',
+                shape=[batch_size, hidden_dim],
+                dtype='float32')
+
+            np_input = np.random.uniform(
+                -0.1, 0.1, (batch_size, emb_dim)).astype('float64')
+            np_pre_hidden = np.random.uniform(
+                -0.1, 0.1, (batch_size, hidden_dim)).astype('float64')
+            np_pre_cell = np.random.uniform(
+                -0.1, 0.1, (batch_size, hidden_dim)).astype('float64')
+
+            def test_input_Variable():
+                lstm_unit(np_input, pre_hidden, pre_cell)
+
+            self.assertRaises(TypeError, test_input_Variable)
+
+            def test_pre_hidden_Variable():
+                lstm_unit(inputs, np_pre_hidden, pre_cell)
+
+            self.assertRaises(TypeError, test_pre_hidden_Variable)
+
+            def test_pre_cell_Variable():
+                lstm_unit(inputs, pre_hidden, np_pre_cell)
+
+            self.assertRaises(TypeError, test_pre_cell_Variable)
+
+            def test_input_type():
+                error_input = fluid.data(
+                    name='error_input',
+                    shape=[batch_size, emb_dim],
+                    dtype='int32')
+                lstm_unit(error_input, pre_hidden, pre_cell)
+
+            self.assertRaises(TypeError, test_input_type)
+
+            def test_pre_hidden_type():
+                error_pre_hidden = fluid.data(
+                    name='error_pre_hidden',
+                    shape=[batch_size, hidden_dim],
+                    dtype='int32')
+                lstm_unit(inputs, error_pre_hidden, pre_cell)
+
+            self.assertRaises(TypeError, test_pre_hidden_type)
+
+            def test_pre_cell_type():
+                error_pre_cell = fluid.data(
+                    name='error_pre_cell',
+                    shape=[batch_size, hidden_dim],
+                    dtype='int32')
+                lstm_unit(inputs, pre_hidden, error_pre_cell)
+
+            self.assertRaises(TypeError, test_pre_cell_type)
+
+
 class LstmUnitTest(OpTest):
     def setUp(self):
         self.op_type = "lstm_unit"
-        x_np = np.random.normal(size=(5, 16)).astype("float64")
-        c_np = np.random.normal(size=(5, 4)).astype("float64")
+        x_np = np.random.normal(size=(15, 160)).astype("float64")
+        c_np = np.random.normal(size=(15, 40)).astype("float64")
         i_np, f_np, o_np, j_np = np.split(x_np, 4, axis=1)
         forget_bias_np = 0.
         self.attrs = {'forget_bias': 0.}

python/paddle/fluid/tests/unittests/test_rnn_cell_api.py

@@ -20,6 +20,7 @@ import numpy
 import paddle.fluid as fluid
 import paddle.fluid.layers as layers
 import paddle.fluid.core as core
+from paddle.fluid.framework import program_guard, Program
 
 from paddle.fluid.executor import Executor
 from paddle.fluid import framework
@@ -33,6 +34,73 @@ import paddle.fluid.layers.utils as utils
 import numpy as np
 
 
+class TestLSTMCellError(unittest.TestCase):
+    def test_errors(self):
+        with program_guard(Program(), Program()):
+            batch_size, input_size, hidden_size = 4, 16, 16
+            inputs = fluid.data(
+                name='inputs', shape=[None, input_size], dtype='float32')
+            pre_hidden = fluid.data(
+                name='pre_hidden', shape=[None, hidden_size], dtype='float32')
+            pre_cell = fluid.data(
+                name='pre_cell', shape=[None, hidden_size], dtype='float32')
+            cell = LSTMCell(hidden_size)
+
+            def test_input_Variable():
+                np_input = np.random.random(
+                    (batch_size, input_size)).astype("float32")
+                cell(np_input, [pre_hidden, pre_cell])
+
+            self.assertRaises(TypeError, test_input_Variable)
+
+            def test_pre_hidden_Variable():
+                np_pre_hidden = np.random.random(
+                    (batch_size, hidden_size)).astype("float32")
+                cell(inputs, [np_pre_hidden, pre_cell])
+
+            self.assertRaises(TypeError, test_pre_hidden_Variable)
+
+            def test_pre_cell_Variable():
+                np_pre_cell = np.random.random(
+                    (batch_size, input_size)).astype("float32")
+                cell(inputs, [pre_hidden, np_pre_cell])
+
+            self.assertRaises(TypeError, test_pre_cell_Variable)
+
+            def test_input_type():
+                error_inputs = fluid.data(
+                    name='error_inputs',
+                    shape=[None, input_size],
+                    dtype='int32')
+                cell(error_inputs, [pre_hidden, pre_cell])
+
+            self.assertRaises(TypeError, test_input_type)
+
+            def test_pre_hidden_type():
+                error_pre_hidden = fluid.data(
+                    name='error_pre_hidden',
+                    shape=[None, hidden_size],
+                    dtype='int32')
+                cell(inputs, [error_pre_hidden, pre_cell])
+
+            self.assertRaises(TypeError, test_pre_hidden_type)
+
+            def test_pre_cell_type():
+                error_pre_cell = fluid.data(
+                    name='error_pre_cell',
+                    shape=[None, hidden_size],
+                    dtype='int32')
+                cell(inputs, [pre_hidden, error_pre_cell])
+
+            self.assertRaises(TypeError, test_pre_cell_type)
+
+            def test_dtype():
+                # the input type must be Variable
+                LSTMCell(hidden_size, dtype="int32")
+
+            self.assertRaises(TypeError, test_dtype)
+
+
 class TestLSTMCell(unittest.TestCase):
     def setUp(self):
         self.batch_size = 4
@@ -93,6 +161,58 @@ class TestLSTMCell(unittest.TestCase):
         self.assertTrue(np.allclose(out[0], out[1], rtol=1e-4, atol=0))
 
 
+class TestGRUCellError(unittest.TestCase):
+    def test_errors(self):
+        with program_guard(Program(), Program()):
+            batch_size, input_size, hidden_size = 4, 16, 16
+            inputs = fluid.data(
+                name='inputs', shape=[None, input_size], dtype='float32')
+            pre_hidden = layers.data(
+                name='pre_hidden',
+                shape=[None, hidden_size],
+                append_batch_size=False,
+                dtype='float32')
+            cell = GRUCell(hidden_size)
+
+            def test_input_Variable():
+                np_input = np.random.random(
+                    (batch_size, input_size)).astype("float32")
+                cell(np_input, pre_hidden)
+
+            self.assertRaises(TypeError, test_input_Variable)
+
+            def test_pre_hidden_Variable():
+                np_pre_hidden = np.random.random(
+                    (batch_size, hidden_size)).astype("float32")
+                cell(inputs, np_pre_hidden)
+
+            self.assertRaises(TypeError, test_pre_hidden_Variable)
+
+            def test_input_type():
+                error_inputs = fluid.data(
+                    name='error_inputs',
+                    shape=[None, input_size],
+                    dtype='int32')
+                cell(error_inputs, pre_hidden)
+
+            self.assertRaises(TypeError, test_input_type)
+
+            def test_pre_hidden_type():
+                error_pre_hidden = fluid.data(
+                    name='error_pre_hidden',
+                    shape=[None, hidden_size],
+                    dtype='int32')
+                cell(inputs, error_pre_hidden)
+
+            self.assertRaises(TypeError, test_pre_hidden_type)
+
+            def test_dtype():
+                # the input type must be Variable
+                GRUCell(hidden_size, dtype="int32")
+
+            self.assertRaises(TypeError, test_dtype)
+
+
 class TestGRUCell(unittest.TestCase):
     def setUp(self):
         self.batch_size = 4
@@ -151,6 +271,92 @@ class TestGRUCell(unittest.TestCase):
         self.assertTrue(np.allclose(out[0], out[1], rtol=1e-4, atol=0))
 
 
+class TestRnnError(unittest.TestCase):
+    def test_errors(self):
+        with program_guard(Program(), Program()):
+            batch_size = 4
+            input_size = 16
+            hidden_size = 16
+            seq_len = 4
+            inputs = fluid.data(
+                name='inputs', shape=[None, input_size], dtype='float32')
+            pre_hidden = layers.data(
+                name='pre_hidden',
+                shape=[None, hidden_size],
+                append_batch_size=False,
+                dtype='float32')
+            inputs_basic_lstm = fluid.data(
+                name='inputs_basic_lstm',
+                shape=[None, None, input_size],
+                dtype='float32')
+            sequence_length = fluid.data(
+                name="sequence_length", shape=[None], dtype='int64')
+
+            inputs_dynamic_rnn = layers.transpose(
+                inputs_basic_lstm, perm=[1, 0, 2])
+            cell = LSTMCell(hidden_size, name="LSTMCell_for_rnn")
+            np_inputs_dynamic_rnn = np.random.random(
+                (seq_len, batch_size, input_size)).astype("float32")
+
+            def test_input_Variable():
+                dynamic_rnn(
+                    cell=cell,
+                    inputs=np_inputs_dynamic_rnn,
+                    sequence_length=sequence_length,
+                    is_reverse=False)
+
+            self.assertRaises(TypeError, test_input_Variable)
+
+            def test_input_list():
+                dynamic_rnn(
+                    cell=cell,
+                    inputs=[np_inputs_dynamic_rnn],
+                    sequence_length=sequence_length,
+                    is_reverse=False)
+
+            self.assertRaises(TypeError, test_input_list)
+
+            def test_initial_states_type():
+                cell = GRUCell(hidden_size, name="GRUCell_for_rnn")
+                error_initial_states = np.random.random(
+                    (batch_size, hidden_size)).astype("float32")
+                dynamic_rnn(
+                    cell=cell,
+                    inputs=inputs_dynamic_rnn,
+                    initial_states=error_initial_states,
+                    sequence_length=sequence_length,
+                    is_reverse=False)
+
+            self.assertRaises(TypeError, test_initial_states_type)
+
+            def test_initial_states_list():
+                error_initial_states = [
+                    np.random.random(
+                        (batch_size, hidden_size)).astype("float32"),
+                    np.random.random(
+                        (batch_size, hidden_size)).astype("float32")
+                ]
+                dynamic_rnn(
+                    cell=cell,
+                    inputs=inputs_dynamic_rnn,
+                    initial_states=error_initial_states,
+                    sequence_length=sequence_length,
+                    is_reverse=False)
+
+            self.assertRaises(TypeError, test_initial_states_type)
+
+            def test_sequence_length_type():
+                np_sequence_length = np.random.random(
+                    (batch_size)).astype("float32")
+                dynamic_rnn(
+                    cell=cell,
+                    inputs=inputs_dynamic_rnn,
+                    sequence_length=np_sequence_length,
+                    is_reverse=False)
+
+            self.assertRaises(TypeError, test_sequence_length_type)
+
+
 class TestRnn(unittest.TestCase):
     def setUp(self):
         self.batch_size = 4