diff --git a/Lib/test/test_site.py b/Lib/test/test_site.py
--- a/Lib/test/test_site.py
+++ b/Lib/test/test_site.py
@@ -11,18 +11,15 @@ import builtins
 import os
 import sys
 import re
+import site
 import encodings
 import subprocess
 import sysconfig
 from copy import copy
 
-# Need to make sure to not import 'site' if someone specified ``-S`` at the
-# command-line.  Detect this by just making sure 'site' has not been imported
-# already.
-if "site" in sys.modules:
-    import site
-else:
-    raise unittest.SkipTest("importation of site.py suppressed")
+site.getusersitepackages()
+skip_unless_user_site = unittest.skipUnless(
+    site.ENABLE_USER_SITE, 'user site-packages disabled by -s or -S')
 
 if not os.path.isdir(site.USER_SITE):
     # need to add user site directory for tests
@@ -159,7 +156,10 @@ class HelperFunctionsTests(unittest.Test
 
     def test_s_option(self):
         usersite = site.USER_SITE
-        self.assertIn(usersite, sys.path)
+        if site.ENABLE_USER_SITE:
+            self.assertIn(usersite, sys.path)
+        else:
+            self.assertNotIn(usersite, sys.path)
 
         env = os.environ.copy()
         rc = subprocess.call([sys.executable, '-c',
@@ -363,16 +363,19 @@ class ImportSideEffectTests(unittest.Tes
         # XXX: implement
         pass
 
+    @skip_unless_user_site
     def test_setting_quit(self):
         # 'quit' and 'exit' should be injected into builtins
         self.assertTrue(hasattr(builtins, "quit"))
         self.assertTrue(hasattr(builtins, "exit"))
 
+    @skip_unless_user_site
     def test_setting_copyright(self):
         # 'copyright' and 'credits' should be in builtins
         self.assertTrue(hasattr(builtins, "copyright"))
         self.assertTrue(hasattr(builtins, "credits"))
 
+    @skip_unless_user_site
     def test_setting_help(self):
         # 'help' should be set in builtins
         self.assertTrue(hasattr(builtins, "help"))