# Copyright 2017 The TensorFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ==============================================================================
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"""Tests for tensorflow.ops.stack_ops."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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import numpy as np
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from tensorflow.compiler.tests import xla_test
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from tensorflow.python.framework import dtypes
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from tensorflow.python.framework import ops
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from tensorflow.python.ops import array_ops
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from tensorflow.python.ops import gen_data_flow_ops
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from tensorflow.python.platform import test
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class StackOpTest(xla_test.XLATestCase):
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def testStackPushPop(self):
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with self.cached_session(), self.test_scope():
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size = array_ops.placeholder(dtypes.int32)
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v = array_ops.placeholder(dtypes.float32)
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h = gen_data_flow_ops.stack_v2(size, dtypes.float32, stack_name="foo")
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c = gen_data_flow_ops.stack_push_v2(h, v)
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with ops.control_dependencies([c]):
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c1 = gen_data_flow_ops.stack_pop_v2(h, dtypes.float32)
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self.assertAllClose([[4.0, 5.0]], c1.eval({size: 5, v: [[4.0, 5.0]]}))
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def testStackPushPopSwap(self):
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with self.cached_session(), self.test_scope():
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a = np.arange(2000)
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x = array_ops.placeholder(dtypes.float32)
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h = gen_data_flow_ops.stack_v2(5, dtypes.float32, stack_name="foo")
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c = gen_data_flow_ops.stack_push_v2(h, x, swap_memory=True)
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with ops.control_dependencies([c]):
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c1 = gen_data_flow_ops.stack_pop_v2(h, dtypes.float32)
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self.assertAllClose(a, c1.eval({x: a}))
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def testMultiStack(self):
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with self.cached_session(), self.test_scope():
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v = array_ops.placeholder(dtypes.float32)
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h1 = gen_data_flow_ops.stack_v2(5, dtypes.float32, stack_name="foo")
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c1 = gen_data_flow_ops.stack_push_v2(h1, v)
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with ops.control_dependencies([c1]):
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c1 = gen_data_flow_ops.stack_pop_v2(h1, dtypes.float32)
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h2 = gen_data_flow_ops.stack_v2(5, dtypes.float32, stack_name="bar")
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c2 = gen_data_flow_ops.stack_push_v2(h2, 5.0)
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with ops.control_dependencies([c2]):
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c2 = gen_data_flow_ops.stack_pop_v2(h2, dtypes.float32)
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r = c1 + c2
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self.assertAllClose(9.0, r.eval({v: 4.0}))
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def testSameNameStacks(self):
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"""Different stacks with the same name do not interfere."""
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with self.cached_session() as sess, self.test_scope():
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v1 = array_ops.placeholder(dtypes.float32)
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v2 = array_ops.placeholder(dtypes.float32)
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h1 = gen_data_flow_ops.stack_v2(5, dtypes.float32, stack_name="foo")
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h2 = gen_data_flow_ops.stack_v2(5, dtypes.float32, stack_name="foo")
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c1 = gen_data_flow_ops.stack_push_v2(h1, v1)
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with ops.control_dependencies([c1]):
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c2 = gen_data_flow_ops.stack_push_v2(h2, v2)
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with ops.control_dependencies([c2]):
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pop1 = gen_data_flow_ops.stack_pop_v2(h1, dtypes.float32)
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pop2 = gen_data_flow_ops.stack_pop_v2(h2, dtypes.float32)
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out1, out2 = sess.run([pop1, pop2], {v1: 4.0, v2: 5.0})
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self.assertAllClose(out1, 4.0)
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self.assertAllClose(out2, 5.0)
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def testCloseStack(self):
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with self.cached_session() as sess, self.test_scope():
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size = array_ops.placeholder(dtypes.int32)
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h = gen_data_flow_ops.stack_v2(size, dtypes.float32, stack_name="foo")
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c1 = gen_data_flow_ops.stack_close_v2(h)
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sess.run(c1, {size: 5})
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def testPushCloseStack(self):
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with self.cached_session() as sess, self.test_scope():
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v = array_ops.placeholder(dtypes.float32)
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h = gen_data_flow_ops.stack_v2(5, dtypes.float32, stack_name="foo")
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c = gen_data_flow_ops.stack_push_v2(h, v)
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with ops.control_dependencies([c]):
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c1 = gen_data_flow_ops.stack_close_v2(h)
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sess.run(c1, {v: [[4.0, 5.0]]})
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if __name__ == "__main__":
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test.main()
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