diff --git a/Lib/test/test_int.py b/Lib/test/test_int.py
--- a/Lib/test/test_int.py
+++ b/Lib/test/test_int.py
@@ -45,6 +45,26 @@
         (unichr(0x200), ValueError),
 ]
 
+class SharedTestCaseMixin(object):
+
+    """Test cases shared between test_int and test_long."""
+
+    # Change to int or long in the TestCase subclass.
+    ntype = None
+
+    def test_no_args(self):
+        self.assertEquals(self.ntype(), 0)
+
+    def test_keyword_args(self):
+        # Test invoking int() using keyword arguments.
+        self.assertEquals(self.ntype(x=1.2), 1)
+        self.assertEquals(self.ntype('100', base=2), 4)
+        self.assertEquals(self.ntype(x='100', base=2), 4)
+
+class IntSharedTestCases(SharedTestCaseMixin, unittest.TestCase):
+
+    ntype = int
+
 class IntTestCases(unittest.TestCase):
 
     def test_basic(self):
@@ -316,15 +336,6 @@
         self.assertEqual(int(float(2**54+10)), 2**54+8)
         self.assertEqual(int(float(2**54+11)), 2**54+12)
 
-    def test_no_args(self):
-        self.assertEquals(int(), 0)
-
-    def test_keyword_args(self):
-        # Test invoking int() using keyword arguments.
-        self.assertEquals(int(x=1.2), 1)
-        self.assertEquals(int('100', base=2), 4)
-        self.assertEquals(int(x='100', base=2), 4)
-
     def test_valid_non_numeric_input_types_for_x(self):
         # Test possible valid non-numeric types for x, including subclasses
         # of the allowed built-in types.
@@ -454,7 +465,7 @@
                               ((base, trunc_result_base),))
 
 def test_main():
-    run_unittest(IntTestCases)
+    run_unittest(__name__)
 
 if __name__ == "__main__":
     test_main()
diff --git a/Lib/test/test_long.py b/Lib/test/test_long.py
--- a/Lib/test/test_long.py
+++ b/Lib/test/test_long.py
@@ -1,10 +1,11 @@
 import unittest
-from test import test_support
 import sys
 
 import random
 import math
 
+from test import test_int, test_support
+
 # Used for lazy formatting of failure messages
 class Frm(object):
     def __init__(self, format, *args):
@@ -78,6 +79,9 @@
         (unichr(0x200), ValueError),
 ]
 
+class LongSharedTestCases(test_int.SharedTestCaseMixin, unittest.TestCase):
+
+    ntype = long
 
 class LongTest(unittest.TestCase):
 
@@ -908,7 +912,7 @@
 
 
 def test_main():
-    test_support.run_unittest(LongTest)
+    test_support.run_unittest(__name__)
 
 if __name__ == "__main__":
     test_main()