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      1 # Copyright 2017 The TensorFlow Authors. All Rights Reserved.
      2 #
      3 # Licensed under the Apache License, Version 2.0 (the "License");
      4 # you may not use this file except in compliance with the License.
      5 # You may obtain a copy of the License at
      6 #
      7 #     http://www.apache.org/licenses/LICENSE-2.0
      8 #
      9 # Unless required by applicable law or agreed to in writing, software
     10 # distributed under the License is distributed on an "AS IS" BASIS,
     11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 # See the License for the specific language governing permissions and
     13 # limitations under the License.
     14 # ==============================================================================
     15 """Tests for PyFlow list."""
     16 
     17 from __future__ import absolute_import
     18 from __future__ import division
     19 from __future__ import print_function
     20 
     21 from tensorflow.contrib.py2tf.utils import tensor_list as tl
     22 from tensorflow.python.client.session import Session
     23 from tensorflow.python.eager import context
     24 from tensorflow.python.framework import ops
     25 from tensorflow.python.framework.constant_op import constant
     26 from tensorflow.python.platform import test
     27 
     28 
     29 class TensorListTest(test.TestCase):
     30 
     31   def test_list_append_python(self):
     32     with context.eager_mode():
     33       a = constant(3.0)
     34       l = tl.TensorList(a.shape, a.dtype)
     35       l.append(a)
     36       self.assertEqual(l.count().numpy(), 1)
     37       l.append(a)
     38       self.assertEqual(l.count().numpy(), 2)
     39       _ = l.pop()
     40       self.assertEqual(l.count().numpy(), 1)
     41       a2 = l.pop()
     42       self.assertEqual(l.count().numpy(), 0)
     43       self.assertEqual(a.numpy(), a2.numpy())
     44 
     45   def test_list_index_python(self):
     46     with context.eager_mode():
     47       a = constant(3.0)
     48       b = constant(2.0)
     49       l = tl.TensorList(a.shape, a.dtype)
     50       l.append(a)
     51       self.assertEqual(l[0].numpy(), a.numpy())
     52       l[0] = ops.convert_to_tensor(b)
     53       self.assertEqual(l[0].numpy(), b.numpy())
     54 
     55   def test_list_append_tf(self):
     56     a = constant(3.0)
     57     l = tl.TensorList(a.shape, a.dtype)
     58     l.append(a)
     59     c1 = l.count()
     60     l.append(a)
     61     c2 = l.count()
     62     _ = l.pop()
     63     c3 = l.count()
     64     a2 = l.pop()
     65     c4 = l.count()
     66     with Session() as sess:
     67       c1, c2, c3, c4, a, a2 = sess.run([c1, c2, c3, c4, a, a2])
     68       self.assertEqual(c1, 1)
     69       self.assertEqual(c2, 2)
     70       self.assertEqual(c3, 1)
     71       self.assertEqual(c4, 0)
     72       self.assertEqual(a, a2)
     73 
     74   def test_list_index_tf(self):
     75     a = constant(3.0)
     76     b = constant(2.0)
     77     l = tl.TensorList(a.shape, a.dtype)
     78     l.append(a)
     79     l0 = l[0]
     80     l[0] = b
     81     l1 = l[0]
     82     with self.test_session() as sess:
     83       l0, l1, a, b = sess.run([l0, l1, a, b])
     84       self.assertEqual(l0, a)
     85       self.assertEqual(l1, b)
     86 
     87 
     88 if __name__ == '__main__':
     89   test.main()
     90