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# Copyright 2017 The Abseil Authors.
#
# 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.
"""Internal helper for running tests on Windows Bazel."""
import os
from absl import flags
FLAGS = flags.FLAGS
def get_executable_path(py_binary_name):
"""Returns the executable path of a py_binary.
This returns the executable path of a py_binary that is in another Bazel
target's data dependencies.
On Linux/macOS, the path and __file__ has the same root directory.
On Windows, bazel builds an .exe file and we need to use the MANIFEST file
the location the actual binary.
Args:
py_binary_name: string, the name of a py_binary that is in another Bazel
target's data dependencies.
Raises:
RuntimeError: Raised when it cannot locate the executable path.
"""
if os.name == 'nt':
py_binary_name += '.exe'
manifest_file = os.path.join(FLAGS.test_srcdir, 'MANIFEST')
workspace_name = os.environ['TEST_WORKSPACE']
manifest_entry = '{}/{}'.format(workspace_name, py_binary_name)
with open(manifest_file, 'r') as manifest_fd:
for line in manifest_fd:
tokens = line.strip().split(' ')
if len(tokens) != 2:
continue
if manifest_entry == tokens[0]:
return tokens[1]
raise RuntimeError(
'Cannot locate executable path for {}, MANIFEST file: {}.'.format(
py_binary_name, manifest_file))
else:
# NOTE: __file__ may be .py or .pyc, depending on how the module was
# loaded and executed.
path = __file__
# Use the package name to find the root directory: every dot is
# a directory, plus one for ourselves.
for _ in range(__name__.count('.') + 1):
path = os.path.dirname(path)
root_directory = path
return os.path.join(root_directory, py_binary_name)
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