diff -r 472494ced67f Doc/library/doctest.rst
--- a/Doc/library/doctest.rst	Sat Apr 06 20:53:12 2013 -0700
+++ b/Doc/library/doctest.rst	Sun Apr 07 16:01:08 2013 +0300
@@ -1018,7 +1018,7 @@
    from a text file using :func:`DocFileSuite`.
 
 
-.. function:: DocTestSuite(module=None, globs=None, extraglobs=None, test_finder=None, setUp=None, tearDown=None, checker=None)
+.. function:: DocTestSuite(module=None, globs=None, extraglobs=None, test_finder=None, test_class=DocTestCase, setUp=None, tearDown=None, checker=None, runner=None)
 
    Convert doctest tests for a module to a :class:`unittest.TestSuite`.
 
@@ -1042,9 +1042,20 @@
    Optional argument *test_finder* is the :class:`DocTestFinder` object (or a
    drop-in replacement) that is used to extract doctests from the module.
 
+   Optional argument *test_class* is the :class:`doctest.DocTestCase` object
+   (or a drop-in replacement) that is used to override default test class for
+   test suite.  It defaults to :class:`doctest.DocTestCase`
+
    Optional arguments *setUp*, *tearDown*, and *optionflags* are the same as for
    function :func:`DocFileSuite` above.
 
+   Optional argument *runner* is the :class:`DocTestRunner` object (or a
+   drop-in replacement) that is used to extract doctests from the module.
+
+   Optional argument *checker* specifies the :class:`OutputCheker` object (or a
+   drop-in replacement) that is used to compare the expected outputs to the
+   actual outputs of doctest examples.
+
    This function uses the same search technique as :func:`testmod`.
 
    .. note::
diff -r 472494ced67f Lib/doctest.py
--- a/Lib/doctest.py	Sat Apr 06 20:53:12 2013 -0700
+++ b/Lib/doctest.py	Sun Apr 07 16:01:08 2013 +0300
@@ -2112,7 +2112,7 @@
 class DocTestCase(unittest.TestCase):
 
     def __init__(self, test, optionflags=0, setUp=None, tearDown=None,
-                 checker=None):
+                 checker=None, runner=DocTestRunner):
 
         unittest.TestCase.__init__(self)
         self._dt_optionflags = optionflags
@@ -2120,6 +2120,7 @@
         self._dt_test = test
         self._dt_setUp = setUp
         self._dt_tearDown = tearDown
+        self._dt_runner = runner
 
     def setUp(self):
         test = self._dt_test
@@ -2146,7 +2147,7 @@
             # so add the default reporting flags
             optionflags |= _unittest_reportflags
 
-        runner = DocTestRunner(optionflags=optionflags,
+        runner = self._dt_runner(optionflags=optionflags,
                                checker=self._dt_checker, verbose=False)
 
         try:
@@ -2290,7 +2291,7 @@
 
 
 def DocTestSuite(module=None, globs=None, extraglobs=None, test_finder=None,
-                 **options):
+                 test_class=DocTestCase, **options):
     """
     Convert doctest tests for a module to a unittest test suite.
 
@@ -2358,7 +2359,7 @@
             if filename[-4:] in (".pyc", ".pyo"):
                 filename = filename[:-1]
             test.filename = filename
-        suite.addTest(DocTestCase(test, **options))
+        suite.addTest(test_class(test, **options))
 
     return suite