text: # Copyright 2019 Google Inc. 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 os
  import site
  import sys
  
  # This file checks the visible python state against expected values when run
  # inside a hermetic par file.
  
  failed = False
  def assert_equal(what, a, b):
      global failed
      if a != b:
          print("Expected %s('%s') == '%s'" % (what, a, b))
          failed = True
  
  assert_equal("__name__", __name__, "__main__")
  assert_equal("os.path.basename(__file__)", os.path.basename(__file__), "par_test.py")
  
  archive = os.path.dirname(__file__)
  
  assert_equal("__package__", __package__, "")
  assert_equal("sys.argv[0]", sys.argv[0], archive)
  assert_equal("sys.executable", sys.executable, None)
  assert_equal("sys.exec_prefix", sys.exec_prefix, archive)
  assert_equal("sys.prefix", sys.prefix, archive)
  assert_equal("__loader__.archive", __loader__.archive, archive)
  assert_equal("site.ENABLE_USER_SITE", site.ENABLE_USER_SITE, None)
  
  assert_equal("len(sys.path)", len(sys.path), 3)
  assert_equal("sys.path[0]", sys.path[0], archive)
  assert_equal("sys.path[1]", sys.path[1], os.path.join(archive, "internal"))
  assert_equal("sys.path[2]", sys.path[2], os.path.join(archive, "internal", "stdlib"))
  
  if os.getenv('ARGTEST', False):
      assert_equal("len(sys.argv)", len(sys.argv), 3)
      assert_equal("sys.argv[1]", sys.argv[1], "--arg1")
      assert_equal("sys.argv[2]", sys.argv[2], "arg2")
  else:
      assert_equal("len(sys.argv)", len(sys.argv), 1)
  
  if failed:
      sys.exit(1)
  
  import testpkg.par_test
  