tests/test_env.py

# Copyright 2014 The LUCI Authors. All rights reserved.
# Use of this source code is governed under the Apache License, Version 2.0
# that can be found in the LICENSE file.

import logging
import os
import sys
import unittest

# Directory client/tests/
TESTS_DIR = os.path.dirname(os.path.abspath(__file__))

# Directory client/
CLIENT_DIR = os.path.dirname(TESTS_DIR)
sys.path.insert(0, CLIENT_DIR)

# Fix import path.
sys.path.insert(0, os.path.join(CLIENT_DIR, "third_party", "pyasn1"))
sys.path.insert(0, os.path.join(CLIENT_DIR, "third_party", "rsa"))
sys.path.insert(0, os.path.join(CLIENT_DIR, "third_party"))

# third_party/
from depot_tools import fix_encoding

from utils import fs


_UMASK = None


class SymLink(str):
  """Used as a marker to create a symlink instead of a file."""


def umask():
  """Returns current process umask without modifying it."""
  global _UMASK
  if _UMASK is None:
    _UMASK = os.umask(0o777)
    os.umask(_UMASK)
  return _UMASK


def make_tree(out, contents):
  for relpath, content in sorted(contents.items()):
    filepath = os.path.join(out, relpath.replace("/", os.path.sep))
    dirpath = os.path.dirname(filepath)
    if not fs.isdir(dirpath):
      fs.makedirs(dirpath, 0o700)
    if isinstance(content, SymLink):
      fs.symlink(content, filepath)
    else:
      mode = 0o700 if relpath.endswith(".py") else 0o600
      flags = os.O_WRONLY | os.O_CREAT
      if sys.platform == "win32":
        # pylint: disable=no-member
        flags |= os.O_BINARY
      with os.fdopen(os.open(filepath, flags, mode), "wb") as f:
        f.write(content)


def setup():
  fix_encoding.fix_encoding()
  # Use an unusual umask.
  os.umask(0o070)
  fs.chdir(TESTS_DIR)


def main():
  """Improvement over unittest.main()."""
  logging.basicConfig(
    level=logging.DEBUG if "-v" in sys.argv else logging.ERROR,
    format="%(levelname)5s %(filename)15s(%(lineno)3d): %(message)s",
  )
  if "-v" in sys.argv:
    unittest.TestCase.maxDiff = None
  setup()
  unittest.main()