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