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 which set DEBUG_SAVEALL and assert no garbage was created.
16
17This flag seems to be sticky, so these tests have been isolated for now.
18"""
19
20from __future__ import absolute_import
21from __future__ import division
22from __future__ import print_function
23
24from tensorflow.python.eager import context
25from tensorflow.python.framework import dtypes
26from tensorflow.python.framework import test_util
27from tensorflow.python.ops import resource_variable_ops
28from tensorflow.python.ops import tensor_array_ops
29from tensorflow.python.platform import test
30
31
32class NoReferenceCycleTests(test_util.TensorFlowTestCase):
33
34  @test_util.assert_no_garbage_created
35  def testEagerResourceVariables(self):
36    with context.eager_mode():
37      resource_variable_ops.ResourceVariable(1.0, name="a")
38
39  @test_util.assert_no_garbage_created
40  def testTensorArrays(self):
41    with context.eager_mode():
42      ta = tensor_array_ops.TensorArray(
43          dtype=dtypes.float32,
44          tensor_array_name="foo",
45          size=3,
46          infer_shape=False)
47
48      w0 = ta.write(0, [[4.0, 5.0]])
49      w1 = w0.write(1, [[1.0]])
50      w2 = w1.write(2, -3.0)
51
52      r0 = w2.read(0)
53      r1 = w2.read(1)
54      r2 = w2.read(2)
55
56      d0, d1, d2 = self.evaluate([r0, r1, r2])
57      self.assertAllEqual([[4.0, 5.0]], d0)
58      self.assertAllEqual([[1.0]], d1)
59      self.assertAllEqual(-3.0, d2)
60
61
62if __name__ == "__main__":
63  test.main()
64