Issue #20532: Tests which use _testcapi now are marked as CPython only.

1 files changed, 15 insertions, 8 deletions

diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
index 1b5db94..4800d6d 100644
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -5,7 +5,6 @@ Common tests shared by test_str, test_unicode, test_userstring and test_string.
 import unittest, string, sys, struct
 from test import support
 from collections import UserList
-import _testcapi
 
 class Sequence:
     def __init__(self, seq='wxyz'): self.seq = seq
@@ -1185,19 +1184,27 @@ class MixinStrUnicodeUserStringTest:
         # Outrageously large width or precision should raise ValueError.
         self.checkraises(ValueError, '%%%df' % (2**64), '__mod__', (3.2))
         self.checkraises(ValueError, '%%.%df' % (2**64), '__mod__', (3.2))
+        self.checkraises(OverflowError, '%*s', '__mod__',
+                         (sys.maxsize + 1, ''))
+        self.checkraises(OverflowError, '%.*f', '__mod__',
+                         (sys.maxsize + 1, 1. / 7))
+
+        class X(object): pass
+        self.checkraises(TypeError, 'abc', '__mod__', X())
 
+    @support.cpython_only
+    def test_formatting_c_limits(self):
+        from _testcapi import PY_SSIZE_T_MAX, INT_MAX, UINT_MAX
+        SIZE_MAX = (1 << (PY_SSIZE_T_MAX.bit_length() + 1)) - 1
         self.checkraises(OverflowError, '%*s', '__mod__',
-                         (_testcapi.PY_SSIZE_T_MAX + 1, ''))
+                         (PY_SSIZE_T_MAX + 1, ''))
         self.checkraises(OverflowError, '%.*f', '__mod__',
-                         (_testcapi.INT_MAX + 1, 1. / 7))
+                         (INT_MAX + 1, 1. / 7))
         # Issue 15989
         self.checkraises(OverflowError, '%*s', '__mod__',
-                         (1 << (_testcapi.PY_SSIZE_T_MAX.bit_length() + 1), ''))
+                         (SIZE_MAX + 1, ''))
         self.checkraises(OverflowError, '%.*f', '__mod__',
-                         (_testcapi.UINT_MAX + 1, 1. / 7))
-
-        class X(object): pass
-        self.checkraises(TypeError, 'abc', '__mod__', X())
+                         (UINT_MAX + 1, 1. / 7))
 
     def test_floatformatting(self):
         # float formatting