Function isExecutable

src/tests/fetcher_cache_tests.cpp:391–396

TODO(bernd-mesos): Use Path, not string, create Path::executable().

// TODO(bernd-mesos): Use Path, not string, create Path::executable().
static bool isExecutable(const string& path)
{
  Try<bool> access = os::access(path, X_OK);
  EXPECT_SOME(access);
  return access.isSome() && access.get();
}


// Create a future that indicates that the task observed by the given