Mark CPython specific tests as such.

Author: serhiy-storchaka

Lib/test/test_base64.py

@@ -5,7 +5,7 @@
 import sys
 import os
 from array import array
-from test.support import cpython_only
+from test.support import cpython_only, check_impl_detail
 from test.support import os_helper
 from test.support import script_helper
 from test.support.import_helper import ensure_lazy_imports
@@ -181,10 +181,11 @@ def test_b64encode(self):
            b'd\n3\nd\n3\nL\nn\nB\n5\nd\nG\nh\nv\nb\ni\n5\nv\nc\nm\nc\n=')
         eq(base64.b64encode(b"www.python.org", wrapcol=sys.maxsize),
            b'd3d3LnB5dGhvbi5vcmc=')
-        eq(base64.b64encode(b"www.python.org", wrapcol=sys.maxsize*2),
-           b'd3d3LnB5dGhvbi5vcmc=')
-        with self.assertRaises(OverflowError):
-            base64.b64encode(b"www.python.org", wrapcol=2**1000)
+        if check_impl_detail():
+            eq(base64.b64encode(b"www.python.org", wrapcol=sys.maxsize*2),
+               b'd3d3LnB5dGhvbi5vcmc=')
+            with self.assertRaises(OverflowError):
+                base64.b64encode(b"www.python.org", wrapcol=2**1000)
         with self.assertRaises(ValueError):
             base64.b64encode(b"www.python.org", wrapcol=-8)
         with self.assertRaises(TypeError):

Lib/test/test_binascii.py

@@ -5,7 +5,7 @@
 import array
 import re
 import sys
-from test.support import bigmemtest, _1G, _4G
+from test.support import bigmemtest, _1G, _4G, check_impl_detail
 from test.support.hypothesis_helper import hypothesis
 
 
@@ -501,10 +501,11 @@ def test_b2a_base64_wrapcol(self):
             b'd\n3\nd\n3\nL\nn\nB\n5\nd\nG\nh\nv\nb\ni\n5\nv\nc\nm\nc\n=\n')
         self.assertEqual(binascii.b2a_base64(b, wrapcol=sys.maxsize),
                          b'd3d3LnB5dGhvbi5vcmc=\n')
-        self.assertEqual(binascii.b2a_base64(b, wrapcol=sys.maxsize*2),
-                         b'd3d3LnB5dGhvbi5vcmc=\n')
-        with self.assertRaises(OverflowError):
-            binascii.b2a_base64(b, wrapcol=2**1000)
+        if check_impl_detail():
+            self.assertEqual(binascii.b2a_base64(b, wrapcol=sys.maxsize*2),
+                             b'd3d3LnB5dGhvbi5vcmc=\n')
+            with self.assertRaises(OverflowError):
+                binascii.b2a_base64(b, wrapcol=2**1000)
         with self.assertRaises(ValueError):
             binascii.b2a_base64(b, wrapcol=-8)
         with self.assertRaises(TypeError):