bpo-40275: Use new test.support helper submodules in tests

Lib/test/libregrtest/save_env.py

@@ -77,7 +77,7 @@ def get_urllib_requests__url_tempfiles(self):
         return list(urllib.request._url_tempfiles)
     def restore_urllib_requests__url_tempfiles(self, tempfiles):
         for filename in tempfiles:
-            support.unlink(filename)
+            os_helper.unlink(filename)
 
     def get_urllib_requests__opener(self):
         return urllib.request._opener
@@ -245,9 +245,9 @@ def restore_files(self, saved_value):
         fn = os_helper.TESTFN
         if fn not in saved_value and (fn + '/') not in saved_value:
             if os.path.isfile(fn):
-                support.unlink(fn)
+                os_helper.unlink(fn)
             elif os.path.isdir(fn):
-                support.rmtree(fn)
+                os_helper.rmtree(fn)
 
     _lc = [getattr(locale, lc) for lc in dir(locale)
            if lc.startswith('LC_')]

Lib/test/test__osx_support.py

@@ -9,6 +9,7 @@
 import unittest
 
 import test.support
+from test.support import os_helper
 
 import _osx_support
 
@@ -39,9 +40,9 @@ def test__find_executable(self):
         if self.env['PATH']:
             self.env['PATH'] = self.env['PATH'] + ':'
         self.env['PATH'] = self.env['PATH'] + os.path.abspath(self.temp_path_dir)
-        test.support.unlink(self.prog_name)
+        os_helper.unlink(self.prog_name)
         self.assertIsNone(_osx_support._find_executable(self.prog_name))
-        self.addCleanup(test.support.unlink, self.prog_name)
+        self.addCleanup(os_helper.unlink, self.prog_name)
         with open(self.prog_name, 'w') as f:
             f.write("#!/bin/sh\n/bin/echo OK\n")
         os.chmod(self.prog_name, stat.S_IRWXU)
@@ -52,8 +53,8 @@ def test__read_output(self):
         if self.env['PATH']:
             self.env['PATH'] = self.env['PATH'] + ':'
         self.env['PATH'] = self.env['PATH'] + os.path.abspath(self.temp_path_dir)
-        test.support.unlink(self.prog_name)
-        self.addCleanup(test.support.unlink, self.prog_name)
+        os_helper.unlink(self.prog_name)
+        self.addCleanup(os_helper.unlink, self.prog_name)
         with open(self.prog_name, 'w') as f:
             f.write("#!/bin/sh\n/bin/echo ExpectedOutput\n")
         os.chmod(self.prog_name, stat.S_IRWXU)
@@ -143,8 +144,8 @@ def test__find_appropriate_compiler(self):
         suffix = (':' + self.env['PATH']) if self.env['PATH'] else ''
         self.env['PATH'] = os.path.abspath(self.temp_path_dir) + suffix
         for c_name, c_output in compilers:
-            test.support.unlink(c_name)
-            self.addCleanup(test.support.unlink, c_name)
+            os_helper.unlink(c_name)
+            self.addCleanup(os_helper.unlink, c_name)
             with open(c_name, 'w') as f:
                 f.write("#!/bin/sh\n/bin/echo " + c_output)
             os.chmod(c_name, stat.S_IRWXU)
@@ -221,8 +222,8 @@ def test__remove_unsupported_archs(self):
         suffix = (':' + self.env['PATH']) if self.env['PATH'] else ''
         self.env['PATH'] = os.path.abspath(self.temp_path_dir) + suffix
         c_name = 'clang'
-        test.support.unlink(c_name)
-        self.addCleanup(test.support.unlink, c_name)
+        os_helper.unlink(c_name)
+        self.addCleanup(os_helper.unlink, c_name)
         # exit status 255 means no PPC support in this compiler chain
         with open(c_name, 'w') as f:
             f.write("#!/bin/sh\nexit 255")

Lib/test/test_dbm_ndbm.py

@@ -1,4 +1,3 @@
-from test import support
 from test.support import import_helper
 from test.support import os_helper
 import_helper.import_module("dbm.ndbm") #skip if not supported
@@ -16,7 +15,7 @@ def setUp(self):
 
     def tearDown(self):
         for suffix in ['', '.pag', '.dir', '.db']:
-            support.unlink(self.filename + suffix)
+            os_helper.unlink(self.filename + suffix)
 
     def test_keys(self):
         self.d = dbm.ndbm.open(self.filename, 'c')
@@ -108,7 +107,7 @@ def test_write_readonly_file(self):
     def test_nonascii_filename(self):
         filename = os_helper.TESTFN_NONASCII
         for suffix in ['', '.pag', '.dir', '.db']:
-            self.addCleanup(support.unlink, filename + suffix)
+            self.addCleanup(os_helper.unlink, filename + suffix)
         with dbm.ndbm.open(filename, 'c') as db:
             db[b'key'] = b'value'
         self.assertTrue(any(os.path.exists(filename + suffix)

Lib/test/test_zipfile64.py

@@ -17,6 +17,7 @@
 
 from tempfile import TemporaryFile
 
+from test.support import os_helper
 from test.support import TESTFN, requires_zlib
 
 TESTFN2 = TESTFN + "2"
@@ -138,8 +139,8 @@ def testMoreThan64kFilesAppend(self):
                 self.assertEqual(content, "%d" % (i**3 % 57))
 
     def tearDown(self):
-        support.unlink(TESTFN)
-        support.unlink(TESTFN2)
+        os_helper.unlink(TESTFN)
+        os_helper.unlink(TESTFN2)
 
 if __name__ == "__main__":
     unittest.main()