test_import.py 文件源码

def test_UNC_path(self):
        with open(os.path.join(self.path, 'test_unc_path.py'), 'w') as f:
            f.write("testdata = 'test_unc_path'")
        importlib.invalidate_caches()
        # Create the UNC path, like \\myhost\c$\foo\bar.
        path = os.path.abspath(self.path)
        import socket
        hn = socket.gethostname()
        drive = path[0]
        unc = "\\\\%s\\%s$"%(hn, drive)
        unc += path[2:]
        try:
            os.listdir(unc)
        except OSError as e:
            if e.errno in (errno.EPERM, errno.EACCES):
                # See issue #15338
                self.skipTest("cannot access administrative share %r" % (unc,))
            raise
        sys.path.insert(0, unc)
        try:
            mod = __import__("test_unc_path")
        except ImportError as e:
            self.fail("could not import 'test_unc_path' from %r: %r"
                      % (unc, e))
        self.assertEqual(mod.testdata, 'test_unc_path')
        self.assertTrue(mod.__file__.startswith(unc), mod.__file__)
        unload("test_unc_path")