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# Copyright 2015 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.
# ==============================================================================
"""Testing.
See the @{$python/test} guide.
@@main
@@TestCase
@@test_src_dir_path
@@assert_equal_graph_def
@@get_temp_dir
@@is_built_with_cuda
@@is_gpu_available
@@gpu_device_name
@@compute_gradient
@@compute_gradient_error
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
# pylint: disable=g-bad-import-order
from tensorflow.python.client import device_lib as _device_lib
from tensorflow.python.framework import test_util as _test_util
from tensorflow.python.platform import googletest as _googletest
from tensorflow.python.util.all_util import remove_undocumented
# pylint: disable=unused-import
from tensorflow.python.framework.test_util import assert_equal_graph_def
from tensorflow.python.framework.test_util import TensorFlowTestCase as TestCase
from tensorflow.python.ops.gradient_checker import compute_gradient_error
from tensorflow.python.ops.gradient_checker import compute_gradient
# pylint: enable=unused-import,g-bad-import-order
import sys
if sys.version_info.major == 2:
import mock # pylint: disable=g-import-not-at-top,unused-import
else:
from unittest import mock # pylint: disable=g-import-not-at-top
# Import Benchmark class
Benchmark = _googletest.Benchmark # pylint: disable=invalid-name
def main(argv=None):
"""Runs all unit tests."""
return _googletest.main(argv)
def get_temp_dir():
"""Returns a temporary directory for use during tests.
There is no need to delete the directory after the test.
Returns:
The temporary directory.
"""
return _googletest.GetTempDir()
def test_src_dir_path(relative_path):
"""Creates an absolute test srcdir path given a relative path.
Args:
relative_path: a path relative to tensorflow root.
e.g. "core/platform".
Returns:
An absolute path to the linked in runfiles.
"""
return _googletest.test_src_dir_path(relative_path)
def is_built_with_cuda():
"""Returns whether TensorFlow was built with CUDA (GPU) support."""
return _test_util.IsGoogleCudaEnabled()
def is_gpu_available(cuda_only=False):
"""Returns whether TensorFlow can access a GPU.
Args:
cuda_only: limit the search to CUDA gpus.
Returns:
True iff a gpu device of the requested kind is available.
"""
if cuda_only:
return any((x.device_type == 'GPU')
for x in _device_lib.list_local_devices())
else:
return any((x.device_type == 'GPU' or x.device_type == 'SYCL')
for x in _device_lib.list_local_devices())
def gpu_device_name():
"""Returns the name of a GPU device if available or the empty string."""
for x in _device_lib.list_local_devices():
if x.device_type == 'GPU' or x.device_type == 'SYCL':
return x.name
return ''
_allowed_symbols = [
# We piggy-back googletest documentation.
'Benchmark',
'mock',
]
remove_undocumented(__name__, _allowed_symbols)
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