From d68442dc933854dab7c942f9f343764235baf822 Mon Sep 17 00:00:00 2001
From: Georg Brandl <georg@python.org>
Date: Sun, 20 Jul 2008 23:21:49 +0000
Subject: [PATCH] Merged revisions 65163 via svnmerge from
 svn+ssh://pythondev@svn.python.org/python/trunk

........
  r65163 | georg.brandl | 2008-07-21 01:18:55 +0200 (Mon, 21 Jul 2008) | 4 lines

  Save the whole of sys.modules instead of using an import tracker.
  This, when merged to py3k, will fix the spurious buildbot failure
  in test_urllib2 ("<urlopen error unknown url type: do>").
........
---
 Lib/test/test_importhooks.py | 25 ++++---------------------
 1 file changed, 4 insertions(+), 21 deletions(-)

diff --git a/Lib/test/test_importhooks.py b/Lib/test/test_importhooks.py
index acf45fb0f7..f267f79f24 100644
--- a/Lib/test/test_importhooks.py
+++ b/Lib/test/test_importhooks.py
@@ -33,15 +33,6 @@ test2_futrel_co = compile(futimp + relimp + test_src, "<???>", "exec")
 test_path = "!!!_test_!!!"
 
 
-class ImportTracker:
-    """Importer that only tracks attempted imports."""
-    def __init__(self):
-        self.imports = []
-    def find_module(self, fullname, path=None):
-        self.imports.append(fullname)
-        return None
-
-
 class TestImporter:
 
     modules = {
@@ -152,17 +143,15 @@ class ImportHooksBaseTestCase(unittest.TestCase):
         self.meta_path = sys.meta_path[:]
         self.path_hooks = sys.path_hooks[:]
         sys.path_importer_cache.clear()
-        self.tracker = ImportTracker()
-        sys.meta_path.insert(0, self.tracker)
+        self.modules_before = sys.modules.copy()
 
     def tearDown(self):
         sys.path[:] = self.path
         sys.meta_path[:] = self.meta_path
         sys.path_hooks[:] = self.path_hooks
         sys.path_importer_cache.clear()
-        for fullname in self.tracker.imports:
-            if fullname in sys.modules:
-                del sys.modules[fullname]
+        sys.modules.clear()
+        sys.modules.update(self.modules_before)
 
 
 class ImportHooksTestCase(ImportHooksBaseTestCase):
@@ -256,13 +245,7 @@ class ImportHooksTestCase(ImportHooksBaseTestCase):
         for mname in mnames:
             m = __import__(mname, globals(), locals(), ["__dummy__"])
             m.__loader__  # to make sure we actually handled the import
-##        # Delete urllib from modules because urlparse was imported above.
-##        # Without this hack, test_socket_ssl fails if run in this order:
-##        # regrtest.py test_codecmaps_tw test_importhooks test_socket_ssl
-##        try:
-##            del sys.modules['urllib']
-##        except KeyError:
-##            pass
+
 
 def test_main():
     support.run_unittest(ImportHooksTestCase)
-- 
2.40.0