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#!/usr/bin/env python
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"""Unit test utilities for Google C++ Mocking Framework."""
 
__author__ = 'wan@google.com (Zhanyong Wan)'
 
import os
import sys
 
 
# Determines path to gtest_test_utils and imports it.
SCRIPT_DIR = os.path.dirname(__file__) or '.'
 
# isdir resolves symbolic links.
gtest_tests_util_dir = os.path.join(SCRIPT_DIR, '../gtest/test')
if os.path.isdir(gtest_tests_util_dir):
  GTEST_TESTS_UTIL_DIR = gtest_tests_util_dir
else:
  GTEST_TESTS_UTIL_DIR = os.path.join(SCRIPT_DIR, '../../gtest/test')
 
sys.path.append(GTEST_TESTS_UTIL_DIR)
import gtest_test_utils  # pylint: disable-msg=C6204
 
 
def GetSourceDir():
  """Returns the absolute path of the directory where the .py files are."""
 
  return gtest_test_utils.GetSourceDir()
 
 
def GetTestExecutablePath(executable_name):
  """Returns the absolute path of the test binary given its name.
 
  The function will print a message and abort the program if the resulting file
  doesn't exist.
 
  Args:
    executable_name: name of the test binary that the test script runs.
 
  Returns:
    The absolute path of the test binary.
  """
 
  return gtest_test_utils.GetTestExecutablePath(executable_name)
 
 
def GetExitStatus(exit_code):
  """Returns the argument to exit(), or -1 if exit() wasn't called.
 
  Args:
    exit_code: the result value of os.system(command).
  """
 
  if os.name == 'nt':
    # On Windows, os.WEXITSTATUS() doesn't work and os.system() returns
    # the argument to exit() directly.
    return exit_code
  else:
    # On Unix, os.WEXITSTATUS() must be used to extract the exit status
    # from the result of os.system().
    if os.WIFEXITED(exit_code):
      return os.WEXITSTATUS(exit_code)
    else:
      return -1
 
 
# Suppresses the "Invalid const name" lint complaint
# pylint: disable-msg=C6409
 
# Exposes utilities from gtest_test_utils.
Subprocess = gtest_test_utils.Subprocess
TestCase = gtest_test_utils.TestCase
environ = gtest_test_utils.environ
SetEnvVar = gtest_test_utils.SetEnvVar
PREMATURE_EXIT_FILE_ENV_VAR = gtest_test_utils.PREMATURE_EXIT_FILE_ENV_VAR
 
# pylint: enable-msg=C6409
 
 
def Main():
  """Runs the unit test."""
 
  gtest_test_utils.Main()