diff -r 701069f9888c Lib/test/test_heapq.py
--- a/Lib/test/test_heapq.py	Sat Apr 23 01:24:11 2011 +0200
+++ b/Lib/test/test_heapq.py	Sat Apr 23 04:58:45 2011 +0300
@@ -2,12 +2,18 @@
 
 import random
 import unittest
+from unittest import skipUnless
 from test import support
 import sys
 
 # We do a bit of trickery here to be able to test both the C implementation
 # and the Python implementation of the module.
-import heapq as c_heapq
+try:
+    import _heapq
+except ImportError:
+    c_heapq = None
+else:
+    import heapq as c_heapq
 py_heapq = support.import_fresh_module('heapq', blocked=['_heapq'])
 
 class TestHeap(unittest.TestCase):
@@ -185,7 +191,7 @@
         self.assertFalse(sys.modules['heapq'] is self.module)
         self.assertTrue(hasattr(self.module.heapify, '__code__'))
 
-
+@skipUnless(c_heapq, 'test requires the _heapq module')
 class TestHeapC(TestHeap):
     module = c_heapq
 
@@ -307,6 +313,7 @@
     'Test multiple tiers of iterators'
     return chain(map(lambda x:x, R(Ig(G(seqn)))))
 
+@skipUnless(c_heapq, 'test requires the _heapq module')
 class TestErrorHandling(unittest.TestCase):
     # only for C implementation
     module = c_heapq