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# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Tests for record_input_op."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
from tensorflow.python.lib.io import tf_record
from tensorflow.python.ops import data_flow_ops
from tensorflow.python.platform import test
class RecordInputOpTest(test.TestCase):
def generateTestData(self, prefix, n, m):
for i in range(n):
f = os.path.join(self.get_temp_dir(), prefix + "." + str(i))
w = tf_record.TFRecordWriter(f)
for j in range(m):
w.write("{0:0{width}}".format(i * m + j, width=10).encode("utf-8"))
w.close()
def testRecordInputSimple(self):
with self.test_session() as sess:
self.generateTestData("basic", 1, 1)
yield_op = data_flow_ops.RecordInput(
file_pattern=os.path.join(self.get_temp_dir(), "basic.*"),
parallelism=1,
buffer_size=1,
batch_size=1,
name="record_input").get_yield_op()
self.assertEqual(sess.run(yield_op), b"0000000000")
def testRecordInputEpochs(self):
files = 100
records_per_file = 100
with self.test_session() as sess:
self.generateTestData("basic", files, records_per_file)
records = data_flow_ops.RecordInput(
file_pattern=os.path.join(self.get_temp_dir(), "basic.*"),
parallelism=2,
buffer_size=2000,
batch_size=1,
shift_ratio=0.33,
seed=10,
name="record_input")
yield_op = records.get_yield_op()
# cycle over 3 epochs and make sure we never duplicate
for _ in range(3):
epoch_set = set()
for _ in range(files * records_per_file):
r = sess.run(yield_op)
self.assertTrue(r[0] not in epoch_set)
epoch_set.add(r[0])
def testDoesNotDeadlock(self):
# Iterate multiple times to cause deadlock if there is a chance it can occur
for _ in range(30):
with self.test_session() as sess:
self.generateTestData("basic", 1, 1)
records = data_flow_ops.RecordInput(
file_pattern=os.path.join(self.get_temp_dir(), "basic.*"),
parallelism=1,
buffer_size=100,
batch_size=1,
name="record_input")
yield_op = records.get_yield_op()
for _ in range(50):
sess.run(yield_op)
if __name__ == "__main__":
test.main()
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