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# Copyright 2023 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.
import unittest
from absl import flags
import tensorflow as tf, tf_keras
from official.utils.flags import core as flags_core # pylint: disable=g-bad-import-order
def define_flags():
flags_core.define_base(
clean=True,
num_gpu=False,
stop_threshold=True,
hooks=True,
train_epochs=True,
epochs_between_evals=True)
flags_core.define_performance(
num_parallel_calls=True,
inter_op=True,
intra_op=True,
loss_scale=True,
synthetic_data=True,
dtype=True)
flags_core.define_image()
flags_core.define_benchmark()
class BaseTester(unittest.TestCase):
@classmethod
def setUpClass(cls):
super(BaseTester, cls).setUpClass()
define_flags()
def test_default_setting(self):
"""Test to ensure fields exist and defaults can be set."""
defaults = dict(
data_dir="dfgasf",
model_dir="dfsdkjgbs",
train_epochs=534,
epochs_between_evals=15,
batch_size=256,
hooks=["LoggingTensorHook"],
num_parallel_calls=18,
inter_op_parallelism_threads=5,
intra_op_parallelism_threads=10,
data_format="channels_first")
flags_core.set_defaults(**defaults)
flags_core.parse_flags()
for key, value in defaults.items():
assert flags.FLAGS.get_flag_value(name=key, default=None) == value
def test_benchmark_setting(self):
defaults = dict(
hooks=["LoggingMetricHook"],
benchmark_log_dir="/tmp/12345",
gcp_project="project_abc",
)
flags_core.set_defaults(**defaults)
flags_core.parse_flags()
for key, value in defaults.items():
assert flags.FLAGS.get_flag_value(name=key, default=None) == value
def test_booleans(self):
"""Test to ensure boolean flags trigger as expected."""
flags_core.parse_flags([__file__, "--use_synthetic_data"])
assert flags.FLAGS.use_synthetic_data
def test_parse_dtype_info(self):
flags_core.parse_flags([__file__, "--dtype", "fp16"])
self.assertEqual(flags_core.get_tf_dtype(flags.FLAGS), tf.float16)
self.assertEqual(
flags_core.get_loss_scale(flags.FLAGS, default_for_fp16=2), 2)
flags_core.parse_flags([__file__, "--dtype", "fp16", "--loss_scale", "5"])
self.assertEqual(
flags_core.get_loss_scale(flags.FLAGS, default_for_fp16=2), 5)
flags_core.parse_flags(
[__file__, "--dtype", "fp16", "--loss_scale", "dynamic"])
self.assertEqual(
flags_core.get_loss_scale(flags.FLAGS, default_for_fp16=2), "dynamic")
flags_core.parse_flags([__file__, "--dtype", "fp32"])
self.assertEqual(flags_core.get_tf_dtype(flags.FLAGS), tf.float32)
self.assertEqual(
flags_core.get_loss_scale(flags.FLAGS, default_for_fp16=2), 1)
flags_core.parse_flags([__file__, "--dtype", "fp32", "--loss_scale", "5"])
self.assertEqual(
flags_core.get_loss_scale(flags.FLAGS, default_for_fp16=2), 5)
with self.assertRaises(SystemExit):
flags_core.parse_flags([__file__, "--dtype", "int8"])
with self.assertRaises(SystemExit):
flags_core.parse_flags(
[__file__, "--dtype", "fp16", "--loss_scale", "abc"])
def test_get_nondefault_flags_as_str(self):
defaults = dict(
clean=True,
data_dir="abc",
hooks=["LoggingTensorHook"],
stop_threshold=1.5,
use_synthetic_data=False)
flags_core.set_defaults(**defaults)
flags_core.parse_flags()
expected_flags = ""
self.assertEqual(flags_core.get_nondefault_flags_as_str(), expected_flags)
flags.FLAGS.clean = False
expected_flags += "--noclean"
self.assertEqual(flags_core.get_nondefault_flags_as_str(), expected_flags)
flags.FLAGS.data_dir = "xyz"
expected_flags += " --data_dir=xyz"
self.assertEqual(flags_core.get_nondefault_flags_as_str(), expected_flags)
flags.FLAGS.hooks = ["aaa", "bbb", "ccc"]
expected_flags += " --hooks=aaa,bbb,ccc"
self.assertEqual(flags_core.get_nondefault_flags_as_str(), expected_flags)
flags.FLAGS.stop_threshold = 3.
expected_flags += " --stop_threshold=3.0"
self.assertEqual(flags_core.get_nondefault_flags_as_str(), expected_flags)
flags.FLAGS.use_synthetic_data = True
expected_flags += " --use_synthetic_data"
self.assertEqual(flags_core.get_nondefault_flags_as_str(), expected_flags)
# Assert that explicit setting a flag to its default value does not cause it
# to appear in the string
flags.FLAGS.use_synthetic_data = False
expected_flags = expected_flags[:-len(" --use_synthetic_data")]
self.assertEqual(flags_core.get_nondefault_flags_as_str(), expected_flags)
if __name__ == "__main__":
unittest.main()
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