Merge pull request RustPython#4745 from ilp-sys/test_array_update

Update test_array.py from Cpython v3.11.2

Author: youknowone

Lib/test/test_array.py

@@ -5,6 +5,7 @@
 import collections.abc
 import unittest
 from test import support
+from test.support import import_helper
 from test.support import os_helper
 from test.support import _2G
 import weakref
@@ -1151,9 +1152,9 @@ def test_initialize_with_unicode(self):
 
     @support.cpython_only
     def test_obsolete_write_lock(self):
-        from _testcapi import getbuffer_with_null_view
+        _testcapi = import_helper.import_module('_testcapi')
         a = array.array('B', b"")
-        self.assertRaises(BufferError, getbuffer_with_null_view, a)
+        self.assertRaises(BufferError, _testcapi.getbuffer_with_null_view, a)
 
     # TODO: RUSTPYTHON
     @unittest.expectedFailure