[Python-checkins] cpython (3.3): Issue #20532: Tests which use _testcapi now are marked as CPython only.

serhiy.storchaka python-checkins at python.org
Fri Feb 7 09:11:08 CET 2014


http://hg.python.org/cpython/rev/e5a78f7c2dcb
changeset: 89008:e5a78f7c2dcb
branch: 3.3
parent: 89003:98d9d152e94b
user: Serhiy Storchaka <storchaka at gmail.com>
date: Fri Feb 07 10:06:39 2014 +0200
summary:
 Issue #20532: Tests which use _testcapi now are marked as CPython only.
files:
 Lib/test/string_tests.py | 25 ++++--
 Lib/test/support/__init__.py | 2 +-
 Lib/test/test_capi.py | 3 +-
 Lib/test/test_code.py | 5 +-
 Lib/test/test_codecs.py | 87 +++++++++++++--------
 Lib/test/test_descr.py | 1 +
 Lib/test/test_devpoll.py | 15 +++-
 Lib/test/test_exceptions.py | 2 +
 Lib/test/test_fcntl.py | 47 +++++++----
 Lib/test/test_fileio.py | 7 +-
 Lib/test/test_format.py | 22 ++++-
 Lib/test/test_getargs2.py | 2 +
 Lib/test/test_io.py | 5 +-
 Lib/test/test_poll.py | 15 +++-
 Lib/test/test_posix.py | 6 +-
 Lib/test/test_socket.py | 36 +++++++-
 Lib/test/test_structmembers.py | 8 +-
 Lib/test/test_sys.py | 1 +
 Lib/test/test_tcl.py | 12 ++-
 Lib/test/test_threading.py | 3 +-
 Lib/test/test_time.py | 3 +
 Lib/test/test_traceback.py | 7 +-
 Lib/test/test_ucn.py | 18 ++--
 Lib/test/test_unicode.py | 11 ++-
 Misc/NEWS | 2 +
 25 files changed, 239 insertions(+), 106 deletions(-)
diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -5,7 +5,6 @@
 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
@@ -1185,20 +1184,28 @@
 # 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__',
- (_testcapi.PY_SSIZE_T_MAX + 1, ''))
+ (sys.maxsize + 1, ''))
 self.checkraises(OverflowError, '%.*f', '__mod__',
- (_testcapi.INT_MAX + 1, 1. / 7))
- # Issue 15989
- self.checkraises(OverflowError, '%*s', '__mod__',
- (1 << (_testcapi.PY_SSIZE_T_MAX.bit_length() + 1), ''))
- self.checkraises(OverflowError, '%.*f', '__mod__',
- (_testcapi.UINT_MAX + 1, 1. / 7))
+ (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__',
+ (PY_SSIZE_T_MAX + 1, ''))
+ self.checkraises(OverflowError, '%.*f', '__mod__',
+ (INT_MAX + 1, 1. / 7))
+ # Issue 15989
+ self.checkraises(OverflowError, '%*s', '__mod__',
+ (SIZE_MAX + 1, ''))
+ self.checkraises(OverflowError, '%.*f', '__mod__',
+ (UINT_MAX + 1, 1. / 7))
+
 def test_floatformatting(self):
 # float formatting
 for prec in range(100):
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -25,7 +25,6 @@
 import logging.handlers
 import struct
 import tempfile
-import _testcapi
 
 try:
 import _thread, threading
@@ -1349,6 +1348,7 @@
 _TPFLAGS_HEAPTYPE = 1<<9
 
 def check_sizeof(test, o, size):
+ import _testcapi
 result = sys.getsizeof(o)
 # add GC header size
 if ((type(o) == type) and (o.__flags__ & _TPFLAGS_HEAPTYPE) or\
diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
--- a/Lib/test/test_capi.py
+++ b/Lib/test/test_capi.py
@@ -17,7 +17,8 @@
 import threading
 except ImportError:
 threading = None
-import _testcapi
+# Skip this test if the _testcapi module isn't available.
+_testcapi = support.import_module('_testcapi')
 
 
 def testfunction(self):
diff --git a/Lib/test/test_code.py b/Lib/test/test_code.py
--- a/Lib/test/test_code.py
+++ b/Lib/test/test_code.py
@@ -104,7 +104,7 @@
 
 import unittest
 import weakref
-import _testcapi
+from test.support import run_doctest, run_unittest, cpython_only
 
 
 def consts(t):
@@ -126,7 +126,9 @@
 
 class CodeTest(unittest.TestCase):
 
+ @cpython_only
 def test_newempty(self):
+ import _testcapi
 co = _testcapi.code_newempty("filename", "funcname", 15)
 self.assertEqual(co.co_filename, "filename")
 self.assertEqual(co.co_name, "funcname")
@@ -159,7 +161,6 @@
 
 
 def test_main(verbose=None):
- from test.support import run_doctest, run_unittest
 from test import test_code
 run_doctest(test_code, verbose)
 run_unittest(CodeTest, CodeWeakRefTest)
diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -1,4 +1,3 @@
-import _testcapi
 import codecs
 import io
 import locale
@@ -1710,7 +1709,7 @@
 
 class BasicUnicodeTest(unittest.TestCase, MixInCheckStateHandling):
 def test_basics(self):
- s = "abc123" # all codecs should be able to encode these
+ s = "abc123" # all codecs should be able to encode these
 for encoding in all_unicode_encodings:
 name = codecs.lookup(encoding).name
 if encoding.endswith("_codec"):
@@ -1722,9 +1721,9 @@
 with support.check_warnings():
 # unicode-internal has been deprecated
 (b, size) = codecs.getencoder(encoding)(s)
- self.assertEqual(size, len(s), "%r != %r (encoding=%r)" % (size, len(s), encoding))
+ self.assertEqual(size, len(s), "encoding=%r" % encoding)
 (chars, size) = codecs.getdecoder(encoding)(b)
- self.assertEqual(chars, s, "%r != %r (encoding=%r)" % (chars, s, encoding))
+ self.assertEqual(chars, s, "encoding=%r" % encoding)
 
 if encoding not in broken_unicode_with_streams:
 # check stream reader/writer
@@ -1742,15 +1741,13 @@
 for c in encodedresult:
 q.write(bytes([c]))
 decodedresult += reader.read()
- self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+ self.assertEqual(decodedresult, s, "encoding=%r" % encoding)
 
 if encoding not in broken_incremental_coders:
- # check incremental decoder/encoder (fetched via the Python
- # and C API) and iterencode()/iterdecode()
+ # check incremental decoder/encoder and iterencode()/iterdecode()
 try:
 encoder = codecs.getincrementalencoder(encoding)()
- cencoder = _testcapi.codec_incrementalencoder(encoding)
- except LookupError: # no IncrementalEncoder
+ except LookupError: # no IncrementalEncoder
 pass
 else:
 # check incremental decoder/encoder
@@ -1763,45 +1760,71 @@
 for c in encodedresult:
 decodedresult += decoder.decode(bytes([c]))
 decodedresult += decoder.decode(b"", True)
- self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
-
- # check C API
- encodedresult = b""
- for c in s:
- encodedresult += cencoder.encode(c)
- encodedresult += cencoder.encode("", True)
- cdecoder = _testcapi.codec_incrementaldecoder(encoding)
- decodedresult = ""
- for c in encodedresult:
- decodedresult += cdecoder.decode(bytes([c]))
- decodedresult += cdecoder.decode(b"", True)
- self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+ self.assertEqual(decodedresult, s,
+ "encoding=%r" % encoding)
 
 # check iterencode()/iterdecode()
- result = "".join(codecs.iterdecode(codecs.iterencode(s, encoding), encoding))
- self.assertEqual(result, s, "%r != %r (encoding=%r)" % (result, s, encoding))
+ result = "".join(codecs.iterdecode(
+ codecs.iterencode(s, encoding), encoding))
+ self.assertEqual(result, s, "encoding=%r" % encoding)
 
 # check iterencode()/iterdecode() with empty string
- result = "".join(codecs.iterdecode(codecs.iterencode("", encoding), encoding))
+ result = "".join(codecs.iterdecode(
+ codecs.iterencode("", encoding), encoding))
 self.assertEqual(result, "")
 
 if encoding not in ("idna", "mbcs"):
 # check incremental decoder/encoder with errors argument
 try:
 encoder = codecs.getincrementalencoder(encoding)("ignore")
- cencoder = _testcapi.codec_incrementalencoder(encoding, "ignore")
- except LookupError: # no IncrementalEncoder
+ except LookupError: # no IncrementalEncoder
 pass
 else:
 encodedresult = b"".join(encoder.encode(c) for c in s)
 decoder = codecs.getincrementaldecoder(encoding)("ignore")
- decodedresult = "".join(decoder.decode(bytes([c])) for c in encodedresult)
- self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+ decodedresult = "".join(decoder.decode(bytes([c]))
+ for c in encodedresult)
+ self.assertEqual(decodedresult, s,
+ "encoding=%r" % encoding)
 
+ @support.cpython_only
+ def test_basics_capi(self):
+ from _testcapi import codec_incrementalencoder, codec_incrementaldecoder
+ s = "abc123" # all codecs should be able to encode these
+ for encoding in all_unicode_encodings:
+ if encoding not in broken_incremental_coders:
+ # check incremental decoder/encoder (fetched via the C API)
+ try:
+ cencoder = codec_incrementalencoder(encoding)
+ except LookupError: # no IncrementalEncoder
+ pass
+ else:
+ # check C API
+ encodedresult = b""
+ for c in s:
+ encodedresult += cencoder.encode(c)
+ encodedresult += cencoder.encode("", True)
+ cdecoder = codec_incrementaldecoder(encoding)
+ decodedresult = ""
+ for c in encodedresult:
+ decodedresult += cdecoder.decode(bytes([c]))
+ decodedresult += cdecoder.decode(b"", True)
+ self.assertEqual(decodedresult, s,
+ "encoding=%r" % encoding)
+
+ if encoding not in ("idna", "mbcs"):
+ # check incremental decoder/encoder with errors argument
+ try:
+ cencoder = codec_incrementalencoder(encoding, "ignore")
+ except LookupError: # no IncrementalEncoder
+ pass
+ else:
 encodedresult = b"".join(cencoder.encode(c) for c in s)
- cdecoder = _testcapi.codec_incrementaldecoder(encoding, "ignore")
- decodedresult = "".join(cdecoder.decode(bytes([c])) for c in encodedresult)
- self.assertEqual(decodedresult, s, "%r != %r (encoding=%r)" % (decodedresult, s, encoding))
+ cdecoder = codec_incrementaldecoder(encoding, "ignore")
+ decodedresult = "".join(cdecoder.decode(bytes([c]))
+ for c in encodedresult)
+ self.assertEqual(decodedresult, s,
+ "encoding=%r" % encoding)
 
 def test_seek(self):
 # all codecs should be able to encode these
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -2046,6 +2046,7 @@
 prop2 = property(fset=setter)
 self.assertEqual(prop2.__doc__, None)
 
+ @support.cpython_only
 def test_testcapi_no_segfault(self):
 # this segfaulted in 2.5b2
 try:
diff --git a/Lib/test/test_devpoll.py b/Lib/test/test_devpoll.py
--- a/Lib/test/test_devpoll.py
+++ b/Lib/test/test_devpoll.py
@@ -3,8 +3,7 @@
 # Initial tests are copied as is from "test_poll.py"
 
 import os, select, random, unittest, sys
-from test.support import TESTFN, run_unittest
-from _testcapi import USHRT_MAX
+from test.support import TESTFN, run_unittest, cpython_only
 
 try:
 select.devpoll
@@ -94,8 +93,18 @@
 pollster.register(w)
 # Issue #17919
 self.assertRaises(OverflowError, pollster.register, 0, -1)
+ self.assertRaises(OverflowError, pollster.register, 0, 1 << 64)
+ self.assertRaises(OverflowError, pollster.modify, 1, -1)
+ self.assertRaises(OverflowError, pollster.modify, 1, 1 << 64)
+
+ @cpython_only
+ def test_events_mask_overflow_c_limits(self):
+ from _testcapi import USHRT_MAX
+ pollster = select.devpoll()
+ w, r = os.pipe()
+ pollster.register(w)
+ # Issue #17919
 self.assertRaises(OverflowError, pollster.register, 0, USHRT_MAX + 1)
- self.assertRaises(OverflowError, pollster.modify, 1, -1)
 self.assertRaises(OverflowError, pollster.modify, 1, USHRT_MAX + 1)
 
 
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -832,6 +832,7 @@
 self.assertIn("maximum recursion depth exceeded", str(v))
 
 
+ @cpython_only
 def test_MemoryError(self):
 # PyErr_NoMemory always raises the same exception instance.
 # Check that the traceback is not doubled.
@@ -890,6 +891,7 @@
 self.assertEqual(error5.a, 1)
 self.assertEqual(error5.__doc__, "")
 
+ @cpython_only
 def test_memory_error_cleanup(self):
 # Issue #5437: preallocated MemoryError instances should not keep
 # traceback objects alive.
diff --git a/Lib/test/test_fcntl.py b/Lib/test/test_fcntl.py
--- a/Lib/test/test_fcntl.py
+++ b/Lib/test/test_fcntl.py
@@ -7,9 +7,9 @@
 import os
 import struct
 import sys
-import _testcapi
 import unittest
-from test.support import verbose, TESTFN, unlink, run_unittest, import_module
+from test.support import (verbose, TESTFN, unlink, run_unittest, import_module,
+ cpython_only)
 
 # Skip test if no fcntl module.
 fcntl = import_module('fcntl')
@@ -50,6 +50,12 @@
 
 lockdata = get_lockdata()
 
+class BadFile:
+ def __init__(self, fn):
+ self.fn = fn
+ def fileno(self):
+ return self.fn
+
 class TestFcntl(unittest.TestCase):
 
 def setUp(self):
@@ -81,24 +87,27 @@
 self.f.close()
 
 def test_fcntl_bad_file(self):
- class F:
- def __init__(self, fn):
- self.fn = fn
- def fileno(self):
- return self.fn
- self.assertRaises(ValueError, fcntl.fcntl, -1, fcntl.F_SETFL, os.O_NONBLOCK)
- self.assertRaises(ValueError, fcntl.fcntl, F(-1), fcntl.F_SETFL, os.O_NONBLOCK)
- self.assertRaises(TypeError, fcntl.fcntl, 'spam', fcntl.F_SETFL, os.O_NONBLOCK)
- self.assertRaises(TypeError, fcntl.fcntl, F('spam'), fcntl.F_SETFL, os.O_NONBLOCK)
+ with self.assertRaises(ValueError):
+ fcntl.fcntl(-1, fcntl.F_SETFL, os.O_NONBLOCK)
+ with self.assertRaises(ValueError):
+ fcntl.fcntl(BadFile(-1), fcntl.F_SETFL, os.O_NONBLOCK)
+ with self.assertRaises(TypeError):
+ fcntl.fcntl('spam', fcntl.F_SETFL, os.O_NONBLOCK)
+ with self.assertRaises(TypeError):
+ fcntl.fcntl(BadFile('spam'), fcntl.F_SETFL, os.O_NONBLOCK)
+
+ @cpython_only
+ def test_fcntl_bad_file_overflow(self):
+ from _testcapi import INT_MAX, INT_MIN
 # Issue 15989
- self.assertRaises(OverflowError, fcntl.fcntl, _testcapi.INT_MAX + 1,
- fcntl.F_SETFL, os.O_NONBLOCK)
- self.assertRaises(OverflowError, fcntl.fcntl, F(_testcapi.INT_MAX + 1),
- fcntl.F_SETFL, os.O_NONBLOCK)
- self.assertRaises(OverflowError, fcntl.fcntl, _testcapi.INT_MIN - 1,
- fcntl.F_SETFL, os.O_NONBLOCK)
- self.assertRaises(OverflowError, fcntl.fcntl, F(_testcapi.INT_MIN - 1),
- fcntl.F_SETFL, os.O_NONBLOCK)
+ with self.assertRaises(OverflowError):
+ fcntl.fcntl(INT_MAX + 1, fcntl.F_SETFL, os.O_NONBLOCK)
+ with self.assertRaises(OverflowError):
+ fcntl.fcntl(BadFile(INT_MAX + 1), fcntl.F_SETFL, os.O_NONBLOCK)
+ with self.assertRaises(OverflowError):
+ fcntl.fcntl(INT_MIN - 1, fcntl.F_SETFL, os.O_NONBLOCK)
+ with self.assertRaises(OverflowError):
+ fcntl.fcntl(BadFile(INT_MIN - 1), fcntl.F_SETFL, os.O_NONBLOCK)
 
 @unittest.skipIf(
 platform.machine().startswith('arm') and platform.system() == 'Linux',
diff --git a/Lib/test/test_fileio.py b/Lib/test/test_fileio.py
--- a/Lib/test/test_fileio.py
+++ b/Lib/test/test_fileio.py
@@ -8,9 +8,8 @@
 from array import array
 from weakref import proxy
 from functools import wraps
-import _testcapi
 
-from test.support import TESTFN, check_warnings, run_unittest, make_bad_fd
+from test.support import TESTFN, check_warnings, run_unittest, make_bad_fd, cpython_only
 from collections import UserList
 
 from _io import FileIO as _FileIO
@@ -362,7 +361,11 @@
 if sys.platform == 'win32':
 import msvcrt
 self.assertRaises(IOError, msvcrt.get_osfhandle, make_bad_fd())
+
+ @cpython_only
+ def testInvalidFd_overflow(self):
 # Issue 15989
+ import _testcapi
 self.assertRaises(TypeError, _FileIO, _testcapi.INT_MAX + 1)
 self.assertRaises(TypeError, _FileIO, _testcapi.INT_MIN - 1)
 
diff --git a/Lib/test/test_format.py b/Lib/test/test_format.py
--- a/Lib/test/test_format.py
+++ b/Lib/test/test_format.py
@@ -313,21 +313,31 @@
 support.run_unittest(FormatTest)
 
 def test_precision(self):
- INT_MAX = 2147483647
-
 f = 1.2
 self.assertEqual(format(f, ".0f"), "1")
 self.assertEqual(format(f, ".3f"), "1.200")
 with self.assertRaises(ValueError) as cm:
- format(f, ".%sf" % (INT_MAX + 1))
+ format(f, ".%sf" % (sys.maxsize + 1))
 self.assertEqual(str(cm.exception), "precision too big")
 
 c = complex(f)
- self.assertEqual(format(f, ".0f"), "1")
- self.assertEqual(format(f, ".3f"), "1.200")
+ self.assertEqual(format(c, ".0f"), "1+0j")
+ self.assertEqual(format(c, ".3f"), "1.200+0.000j")
+ with self.assertRaises(ValueError) as cm:
+ format(c, ".%sf" % (sys.maxsize + 1))
+ self.assertEqual(str(cm.exception), "precision too big")
+
+ @support.cpython_only
+ def test_precision_c_limits(self):
+ from _testcapi import INT_MAX
+
+ f = 1.2
 with self.assertRaises(ValueError) as cm:
 format(f, ".%sf" % (INT_MAX + 1))
- self.assertEqual(str(cm.exception), "precision too big")
+
+ c = complex(f)
+ with self.assertRaises(ValueError) as cm:
+ format(c, ".%sf" % (INT_MAX + 1))
 
 
 if __name__ == "__main__":
diff --git a/Lib/test/test_getargs2.py b/Lib/test/test_getargs2.py
--- a/Lib/test/test_getargs2.py
+++ b/Lib/test/test_getargs2.py
@@ -1,5 +1,7 @@
 import unittest
 from test import support
+# Skip this test if the _testcapi module isn't available.
+support.import_module('_testcapi')
 from _testcapi import getargs_keywords, getargs_keyword_only
 
 """
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -32,7 +32,6 @@
 import unittest
 import warnings
 import weakref
-import _testcapi
 from collections import deque, UserList
 from itertools import cycle, count
 from test import support
@@ -1977,8 +1976,10 @@
 os.environ.clear()
 os.environ.update(old_environ)
 
- # Issue 15989
+ @support.cpython_only
 def test_device_encoding(self):
+ # Issue 15989
+ import _testcapi
 b = self.BytesIO()
 b.fileno = lambda: _testcapi.INT_MAX + 1
 self.assertRaises(OverflowError, self.TextIOWrapper, b)
diff --git a/Lib/test/test_poll.py b/Lib/test/test_poll.py
--- a/Lib/test/test_poll.py
+++ b/Lib/test/test_poll.py
@@ -3,14 +3,13 @@
 import os
 import random
 import select
-from _testcapi import USHRT_MAX, INT_MAX, UINT_MAX
 try:
 import threading
 except ImportError:
 threading = None
 import time
 import unittest
-from test.support import TESTFN, run_unittest, reap_threads
+from test.support import TESTFN, run_unittest, reap_threads, cpython_only
 
 try:
 select.poll
@@ -161,8 +160,18 @@
 
 # Issues #15989, #17919
 self.assertRaises(OverflowError, pollster.register, 0, -1)
+ self.assertRaises(OverflowError, pollster.register, 0, 1 << 64)
+ self.assertRaises(OverflowError, pollster.modify, 1, -1)
+ self.assertRaises(OverflowError, pollster.modify, 1, 1 << 64)
+
+ @cpython_only
+ def test_poll_c_limits(self):
+ from _testcapi import USHRT_MAX, INT_MAX, UINT_MAX
+ pollster = select.poll()
+ pollster.register(1)
+
+ # Issues #15989, #17919
 self.assertRaises(OverflowError, pollster.register, 0, USHRT_MAX + 1)
- self.assertRaises(OverflowError, pollster.modify, 1, -1)
 self.assertRaises(OverflowError, pollster.modify, 1, USHRT_MAX + 1)
 self.assertRaises(OverflowError, pollster.poll, INT_MAX + 1)
 self.assertRaises(OverflowError, pollster.poll, UINT_MAX + 1)
diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -17,7 +17,6 @@
 import tempfile
 import unittest
 import warnings
-import _testcapi
 
 _DUMMY_SYMLINK = os.path.join(tempfile.gettempdir(),
 support.TESTFN + '-dummy-symlink')
@@ -615,7 +614,12 @@
 except OSError:
 pass
 
+ @support.cpython_only
+ @unittest.skipUnless(hasattr(os, 'pipe2'), "test needs os.pipe2()")
+ @support.requires_linux_version(2, 6, 27)
+ def test_pipe2_c_limits(self):
 # Issue 15989
+ import _testcapi
 self.assertRaises(OverflowError, os.pipe2, _testcapi.INT_MAX + 1)
 self.assertRaises(OverflowError, os.pipe2, _testcapi.UINT_MAX + 1)
 
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -7,7 +7,6 @@
 import socket
 import select
 import tempfile
-import _testcapi
 import time
 import traceback
 import queue
@@ -1274,7 +1273,10 @@
 srv.listen(backlog)
 srv.close()
 
+ @support.cpython_only
+ def test_listen_backlog_overflow(self):
 # Issue 15989
+ import _testcapi
 srv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 srv.bind((HOST, 0))
 self.assertRaises(OverflowError, srv.listen, _testcapi.INT_MAX + 1)
@@ -1593,6 +1595,14 @@
 
 def _testShutdown(self):
 self.serv_conn.send(MSG)
+ self.serv_conn.shutdown(2)
+
+ testShutdown_overflow = support.cpython_only(testShutdown)
+
+ @support.cpython_only
+ def _testShutdown_overflow(self):
+ import _testcapi
+ self.serv_conn.send(MSG)
 # Issue 15989
 self.assertRaises(OverflowError, self.serv_conn.shutdown,
 _testcapi.INT_MAX + 1)
@@ -2361,7 +2371,12 @@
 # code with these functions.
 
 # Match the definition in socketmodule.c
- socklen_t_limit = min(0x7fffffff, _testcapi.INT_MAX)
+ try:
+ import _testcapi
+ except ImportError:
+ socklen_t_limit = 0x7fffffff
+ else:
+ socklen_t_limit = min(0x7fffffff, _testcapi.INT_MAX)
 
 @requireAttrs(socket, "CMSG_LEN")
 def testCMSG_LEN(self):
@@ -3586,14 +3601,23 @@
 pass
 end = time.time()
 self.assertTrue((end - start) < 1.0, "Error setting non-blocking mode.")
- # Issue 15989
- if _testcapi.UINT_MAX < _testcapi.ULONG_MAX:
- self.serv.setblocking(_testcapi.UINT_MAX + 1)
- self.assertIsNone(self.serv.gettimeout())
 
 def _testSetBlocking(self):
 pass
 
+ @support.cpython_only
+ def testSetBlocking_overflow(self):
+ # Issue 15989
+ import _testcapi
+ if _testcapi.UINT_MAX >= _testcapi.ULONG_MAX:
+ self.skipTest('needs UINT_MAX < ULONG_MAX')
+ self.serv.setblocking(False)
+ self.assertEqual(self.serv.gettimeout(), 0.0)
+ self.serv.setblocking(_testcapi.UINT_MAX + 1)
+ self.assertIsNone(self.serv.gettimeout())
+
+ _testSetBlocking_overflow = support.cpython_only(_testSetBlocking)
+
 @unittest.skipUnless(hasattr(socket, 'SOCK_NONBLOCK'),
 'test needs socket.SOCK_NONBLOCK')
 @support.requires_linux_version(2, 6, 28)
diff --git a/Lib/test/test_structmembers.py b/Lib/test/test_structmembers.py
--- a/Lib/test/test_structmembers.py
+++ b/Lib/test/test_structmembers.py
@@ -1,3 +1,8 @@
+import unittest
+from test import support
+
+# Skip this test if the _testcapi module isn't available.
+support.import_module('_testcapi')
 from _testcapi import _test_structmembersType, \
 CHAR_MAX, CHAR_MIN, UCHAR_MAX, \
 SHRT_MAX, SHRT_MIN, USHRT_MAX, \
@@ -6,9 +11,6 @@
 LLONG_MAX, LLONG_MIN, ULLONG_MAX, \
 PY_SSIZE_T_MAX, PY_SSIZE_T_MIN
 
-import unittest
-from test import support
-
 ts=_test_structmembersType(False, # T_BOOL
 1, # T_BYTE
 2, # T_UBYTE
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -610,6 +610,7 @@
 ret, out, err = assert_python_ok(*args)
 self.assertIn(b"free PyDictObjects", err)
 
+ at test.support.cpython_only
 class SizeofTest(unittest.TestCase):
 
 def setUp(self):
diff --git a/Lib/test/test_tcl.py b/Lib/test/test_tcl.py
--- a/Lib/test/test_tcl.py
+++ b/Lib/test/test_tcl.py
@@ -1,7 +1,6 @@
 import unittest
 import sys
 import os
-import _testcapi
 from test import support
 
 # Skip this test if the _tkinter module wasn't built.
@@ -13,6 +12,11 @@
 from tkinter import Tcl
 from _tkinter import TclError
 
+try:
+ from _testcapi import INT_MAX, PY_SSIZE_T_MAX
+except ImportError:
+ INT_MAX = PY_SSIZE_T_MAX = sys.maxsize
+
 tcl_version = _tkinter.TCL_VERSION.split('.')
 try:
 for i in range(len(tcl_version)):
@@ -539,9 +543,9 @@
 def setUp(self):
 self.interp = Tcl()
 
- @unittest.skipUnless(_testcapi.INT_MAX < _testcapi.PY_SSIZE_T_MAX,
- "needs UINT_MAX < SIZE_MAX")
- @support.bigmemtest(size=_testcapi.INT_MAX + 1, memuse=5, dry_run=False)
+ @support.cpython_only
+ @unittest.skipUnless(INT_MAX < PY_SSIZE_T_MAX, "needs UINT_MAX < SIZE_MAX")
+ @support.bigmemtest(size=INT_MAX + 1, memuse=5, dry_run=False)
 def test_huge_string(self, size):
 value = ' ' * size
 self.assertRaises(OverflowError, self.interp.call, 'set', '_', value)
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -3,7 +3,7 @@
 """
 
 import test.support
-from test.support import verbose, strip_python_stderr, import_module
+from test.support import verbose, strip_python_stderr, import_module, cpython_only
 from test.script_helper import assert_python_ok
 
 import random
@@ -773,6 +773,7 @@
 for t in threads:
 t.join()
 
+ @cpython_only
 @unittest.skipIf(_testcapi is None, "need _testcapi module")
 def test_frame_tstate_tracing(self):
 # Issue #14432: Crash when a generator is created in a C thread that is
diff --git a/Lib/test/test_time.py b/Lib/test/test_time.py
--- a/Lib/test/test_time.py
+++ b/Lib/test/test_time.py
@@ -573,6 +573,7 @@
 -(2.0 ** 100.0), 2.0 ** 100.0,
 )
 
+ @support.cpython_only
 def test_time_t(self):
 from _testcapi import pytime_object_to_time_t
 for obj, time_t in (
@@ -588,6 +589,7 @@
 for invalid in self.invalid_values:
 self.assertRaises(OverflowError, pytime_object_to_time_t, invalid)
 
+ @support.cpython_only
 def test_timeval(self):
 from _testcapi import pytime_object_to_timeval
 for obj, timeval in (
@@ -607,6 +609,7 @@
 for invalid in self.invalid_values:
 self.assertRaises(OverflowError, pytime_object_to_timeval, invalid)
 
+ @support.cpython_only
 def test_timespec(self):
 from _testcapi import pytime_object_to_timespec
 for obj, timespec in (
diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -1,12 +1,11 @@
 """Test cases for traceback module"""
 
-from _testcapi import traceback_print, exception_print
 from io import StringIO
 import sys
 import unittest
 import re
 from test.support import run_unittest, Error, captured_output
-from test.support import TESTFN, unlink
+from test.support import TESTFN, unlink, cpython_only
 
 import traceback
 
@@ -173,7 +172,9 @@
 
 class TracebackFormatTests(unittest.TestCase):
 
+ @cpython_only
 def test_traceback_format(self):
+ from _testcapi import traceback_print
 try:
 raise KeyError('blah')
 except KeyError:
@@ -360,7 +361,9 @@
 # This checks built-in reporting by the interpreter.
 #
 
+ @cpython_only
 def get_report(self, e):
+ from _testcapi import exception_print
 e = self.get_exception(e)
 with captured_output("stderr") as s:
 exception_print(e)
diff --git a/Lib/test/test_ucn.py b/Lib/test/test_ucn.py
--- a/Lib/test/test_ucn.py
+++ b/Lib/test/test_ucn.py
@@ -9,12 +9,16 @@
 
 import unittest
 import unicodedata
-import _testcapi
 
 from test import support
 from http.client import HTTPException
 from test.test_normalization import check_version
 
+try:
+ from _testcapi import INT_MAX, PY_SSIZE_T_MAX, UINT_MAX
+except ImportError:
+ INT_MAX = PY_SSIZE_T_MAX = UINT_MAX = 2**64 - 1
+
 class UnicodeNamesTest(unittest.TestCase):
 
 def checkletter(self, name, code):
@@ -216,15 +220,13 @@
 str, b"\\NSPACE", 'unicode-escape', 'strict'
 )
 
- @unittest.skipUnless(_testcapi.INT_MAX < _testcapi.PY_SSIZE_T_MAX,
- "needs UINT_MAX < SIZE_MAX")
- @support.bigmemtest(size=_testcapi.UINT_MAX + 1,
- memuse=2 + 1, dry_run=False)
+ @support.cpython_only
+ @unittest.skipUnless(INT_MAX < PY_SSIZE_T_MAX, "needs UINT_MAX < SIZE_MAX")
+ @support.bigmemtest(size=UINT_MAX + 1, memuse=2 + 1, dry_run=False)
 def test_issue16335(self, size):
 # very very long bogus character name
- x = b'\\N{SPACE' + b'x' * (_testcapi.UINT_MAX + 1) + b'}'
- self.assertEqual(len(x), len(b'\\N{SPACE}') +
- (_testcapi.UINT_MAX + 1))
+ x = b'\\N{SPACE' + b'x' * (UINT_MAX + 1) + b'}'
+ self.assertEqual(len(x), len(b'\\N{SPACE}') + (UINT_MAX + 1))
 self.assertRaisesRegex(UnicodeError,
 'unknown Unicode character name',
 x.decode, 'unicode-escape'
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -1108,8 +1108,13 @@
 self.assertEqual('%.1s' % "a\xe9\u20ac", 'a')
 self.assertEqual('%.2s' % "a\xe9\u20ac", 'a\xe9')
 
+ def test_formatting_huge_precision(self):
+ format_string = "%.{}f".format(sys.maxsize + 1)
+ with self.assertRaises(ValueError):
+ result = format_string % 2.34
+
 @support.cpython_only
- def test_formatting_huge_precision(self):
+ def test_formatting_huge_precision_c_limits(self):
 from _testcapi import INT_MAX
 format_string = "%.{}f".format(INT_MAX + 1)
 with self.assertRaises(ValueError):
@@ -2090,6 +2095,7 @@
 self.assertEqual(PyUnicode_FromFormat(b'%.%s', b'abc'), '%.%s')
 
 # Test PyUnicode_AsWideChar()
+ @support.cpython_only
 def test_aswidechar(self):
 from _testcapi import unicode_aswidechar
 support.import_module('ctypes')
@@ -2127,6 +2133,7 @@
 self.assertEqual(wchar, nonbmp + '0円')
 
 # Test PyUnicode_AsWideCharString()
+ @support.cpython_only
 def test_aswidecharstring(self):
 from _testcapi import unicode_aswidecharstring
 support.import_module('ctypes')
@@ -2161,6 +2168,7 @@
 s += "4"
 self.assertEqual(s, "3")
 
+ @support.cpython_only
 def test_encode_decimal(self):
 from _testcapi import unicode_encodedecimal
 self.assertEqual(unicode_encodedecimal('123'),
@@ -2176,6 +2184,7 @@
 "^'decimal' codec can't encode character",
 unicode_encodedecimal, "123\u20ac", "replace")
 
+ @support.cpython_only
 def test_transform_decimal(self):
 from _testcapi import unicode_transformdecimaltoascii as transform_decimal
 self.assertEqual(transform_decimal('123'),
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -324,6 +324,8 @@
 Tests
 -----
 
+- Issue #20532: Tests which use _testcapi are now marked as CPython only.
+
 - Issue #19920: Added tests for TarFile.list(). Based on patch by Vajrasky Kok.
 
 - Issue #19990: Added tests for the imghdr module. Based on patch by
-- 
Repository URL: http://hg.python.org/cpython


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