Gecko [ www.foryou-vip.com ]

Name	Size	Permission	Date
_blake2	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
_ctypes	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
_decimal	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
_io	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
_multiprocessing	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
_sha3	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
_sqlite	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
_ssl	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
_xxtestfuzz	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
cjkcodecs	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
clinic	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
expat	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
README	112 B	-rw-r--r--	2024-03-19 22:46
Setup	15.15 KB	-rw-r--r--	2024-03-19 22:46
Setup.local	41 B	-rw-r--r--	2025-06-04 09:17
_abc.c	26.09 KB	-rw-r--r--	2024-03-19 22:46
_abc.gcda	8.21 KB	-rw-r--r--	2025-06-04 09:21
_abc.o	228.27 KB	-rw-r--r--	2025-06-04 09:22
_asynciomodule.c	88.39 KB	-rw-r--r--	2024-03-19 22:46
_bisectmodule.c	8.03 KB	-rw-r--r--	2024-03-19 22:46
_bz2module.c	23.65 KB	-rw-r--r--	2024-03-19 22:46
_codecsmodule.c	32.8 KB	-rw-r--r--	2024-03-19 22:46
_codecsmodule.gcda	13.72 KB	-rw-r--r--	2025-06-04 09:21
_codecsmodule.o	374.94 KB	-rw-r--r--	2025-06-04 09:22
_collectionsmodule.c	79.83 KB	-rw-r--r--	2024-03-19 22:46
_collectionsmodule.gcda	14.42 KB	-rw-r--r--	2025-06-04 09:21
_collectionsmodule.o	325.15 KB	-rw-r--r--	2025-06-04 09:22
_contextvarsmodule.c	1.57 KB	-rw-r--r--	2024-03-19 22:46
_cryptmodule.c	1.66 KB	-rw-r--r--	2024-03-19 22:46
_csv.c	50.09 KB	-rw-r--r--	2024-03-19 22:46
_curses_panel.c	18.6 KB	-rw-r--r--	2024-03-19 22:46
_cursesmodule.c	135.6 KB	-rw-r--r--	2024-03-19 22:46
_datetimemodule.c	219.13 KB	-rw-r--r--	2024-03-19 22:46
_dbmmodule.c	14.9 KB	-rw-r--r--	2024-03-19 22:46
_elementtree.c	124.95 KB	-rw-r--r--	2024-03-19 22:46
_functoolsmodule.c	45.07 KB	-rw-r--r--	2024-03-19 22:46
_functoolsmodule.gcda	11.74 KB	-rw-r--r--	2025-06-04 09:21
_functoolsmodule.o	268.69 KB	-rw-r--r--	2025-06-04 09:22
_gdbmmodule.c	21.25 KB	-rw-r--r--	2024-03-19 22:46
_hashopenssl.c	59.7 KB	-rw-r--r--	2024-03-19 22:46
_heapqmodule.c	21.78 KB	-rw-r--r--	2024-03-19 22:46
_iomodule.gcda	6.99 KB	-rw-r--r--	2025-06-04 09:21
_iomodule.o	186.38 KB	-rw-r--r--	2025-06-04 09:22
_json.c	57.57 KB	-rw-r--r--	2024-03-19 22:46
_localemodule.c	22.29 KB	-rw-r--r--	2024-03-19 22:46
_localemodule.gcda	8.57 KB	-rw-r--r--	2025-06-04 09:21
_localemodule.o	181.06 KB	-rw-r--r--	2025-06-04 09:22
_lsprof.c	25.89 KB	-rw-r--r--	2024-03-19 22:46
_lzmamodule.c	48.65 KB	-rw-r--r--	2024-03-19 22:46
_math.c	7.33 KB	-rw-r--r--	2024-03-19 22:46
_math.gcda	2.29 KB	-rw-r--r--	2025-06-04 09:21
_math.h	1007 B	-rw-r--r--	2024-03-19 22:46
_math.o	32.3 KB	-rw-r--r--	2025-06-04 09:22
_opcode.c	2.14 KB	-rw-r--r--	2024-03-19 22:46
_operator.c	46.15 KB	-rw-r--r--	2024-03-19 22:46
_operator.gcda	13.14 KB	-rw-r--r--	2025-06-04 09:21
_operator.o	333.74 KB	-rw-r--r--	2025-06-04 09:22
_pickle.c	229.53 KB	-rw-r--r--	2024-03-19 22:46
_posixsubprocess.c	36.98 KB	-rw-r--r--	2024-03-19 22:46
_queuemodule.c	12.31 KB	-rw-r--r--	2024-03-19 22:46
_randommodule.c	17.76 KB	-rw-r--r--	2024-03-19 22:46
_scproxy.c	6.08 KB	-rw-r--r--	2024-03-19 22:46
_sre.c	79.74 KB	-rw-r--r--	2024-03-19 22:46
_sre.gcda	34.64 KB	-rw-r--r--	2025-06-04 09:21
_sre.o	975.16 KB	-rw-r--r--	2025-06-04 09:22
_ssl.c	186.63 KB	-rw-r--r--	2024-03-19 22:46
_ssl.h	2.08 KB	-rw-r--r--	2024-03-19 22:46
_ssl_data.h	203.14 KB	-rw-r--r--	2024-03-19 22:46
_ssl_data_111.h	208.74 KB	-rw-r--r--	2024-03-19 22:46
_ssl_data_300.h	275.25 KB	-rw-r--r--	2024-03-19 22:46
_stat.c	15.18 KB	-rw-r--r--	2024-03-19 22:46
_stat.gcda	5.7 KB	-rw-r--r--	2025-06-04 09:21
_stat.o	69.77 KB	-rw-r--r--	2025-06-04 09:22
_statisticsmodule.c	4.83 KB	-rw-r--r--	2024-03-19 22:46
_struct.c	68.85 KB	-rw-r--r--	2024-03-19 22:46
_testbuffer.c	82.19 KB	-rw-r--r--	2024-03-19 22:46
_testcapimodule.c	217.47 KB	-rw-r--r--	2024-03-19 22:46
_testclinic.c	22.92 KB	-rw-r--r--	2024-03-19 22:46
_testimportmultiple.c	1.1 KB	-rw-r--r--	2024-03-19 22:46
_testinternalcapi.c	10.76 KB	-rw-r--r--	2024-03-19 22:46
_testmultiphase.c	23.38 KB	-rw-r--r--	2024-03-19 22:46
_threadmodule.c	50.27 KB	-rw-r--r--	2024-03-19 22:46
_threadmodule.gcda	10.46 KB	-rw-r--r--	2025-06-04 09:21
_threadmodule.o	250.8 KB	-rw-r--r--	2025-06-04 09:22
_tkinter.c	93.36 KB	-rw-r--r--	2024-03-19 22:46
_tracemalloc.c	44.86 KB	-rw-r--r--	2024-03-19 22:46
_tracemalloc.gcda	12.51 KB	-rw-r--r--	2025-06-04 09:21
_tracemalloc.o	262.77 KB	-rw-r--r--	2025-06-04 09:22
_uuidmodule.c	3 KB	-rw-r--r--	2024-03-19 22:46
_weakref.c	4.92 KB	-rw-r--r--	2024-03-19 22:46
_weakref.gcda	4.24 KB	-rw-r--r--	2025-06-04 09:21
_weakref.o	84.91 KB	-rw-r--r--	2025-06-04 09:22
_winapi.c	66.78 KB	-rw-r--r--	2024-03-19 22:46
_xxsubinterpretersmodule.c	67.74 KB	-rw-r--r--	2024-03-19 22:46
_zoneinfo.c	73.89 KB	-rw-r--r--	2024-03-19 22:46
addrinfo.h	5.88 KB	-rw-r--r--	2024-03-19 22:46
arraymodule.c	87.46 KB	-rw-r--r--	2024-03-19 22:46
atexitmodule.c	7.29 KB	-rw-r--r--	2024-03-19 22:46
atexitmodule.gcda	4.45 KB	-rw-r--r--	2025-06-04 09:21
atexitmodule.o	97.11 KB	-rw-r--r--	2025-06-04 09:22
audioop.c	59.71 KB	-rw-r--r--	2024-03-19 22:46
binascii.c	54.76 KB	-rw-r--r--	2024-03-19 22:46
bufferedio.gcda	20.46 KB	-rw-r--r--	2025-06-04 09:21
bufferedio.o	414.2 KB	-rw-r--r--	2025-06-04 09:22
bytesio.gcda	10.84 KB	-rw-r--r--	2025-06-04 09:21
bytesio.o	220.71 KB	-rw-r--r--	2025-06-04 09:22
cmathmodule.c	42.3 KB	-rw-r--r--	2024-03-19 22:46
config.c	3.21 KB	-rw-r--r--	2025-06-04 09:17
config.c.in	1.58 KB	-rw-r--r--	2024-03-19 22:46
config.o	34.5 KB	-rw-r--r--	2025-06-04 09:22
errnomodule.c	27.08 KB	-rw-r--r--	2024-03-19 22:46
errnomodule.gcda	8.02 KB	-rw-r--r--	2025-06-04 09:21
errnomodule.o	113.31 KB	-rw-r--r--	2025-06-04 09:22
faulthandler.c	40.52 KB	-rw-r--r--	2024-03-19 22:46
faulthandler.gcda	9.1 KB	-rw-r--r--	2025-06-04 09:21
faulthandler.o	147.28 KB	-rw-r--r--	2025-06-04 09:22
fcntlmodule.c	20.49 KB	-rw-r--r--	2024-03-19 22:46
fileio.gcda	9.01 KB	-rw-r--r--	2025-06-04 09:21
fileio.o	227.98 KB	-rw-r--r--	2025-06-04 09:22
gc_weakref.txt	11.19 KB	-rw-r--r--	2024-03-19 22:46
gcmodule.c	77.27 KB	-rw-r--r--	2024-03-19 22:46
gcmodule.gcda	11.63 KB	-rw-r--r--	2025-06-04 09:21
gcmodule.o	306.44 KB	-rw-r--r--	2025-06-04 09:22
getaddrinfo.c	18.38 KB	-rw-r--r--	2024-03-19 22:46
getbuildinfo.c	1.28 KB	-rw-r--r--	2024-03-19 22:46
getbuildinfo.gcda	3.59 KB	-rw-r--r--	2025-06-04 09:21
getbuildinfo.o	33.84 KB	-rw-r--r--	2025-06-04 09:22
getnameinfo.c	6.18 KB	-rw-r--r--	2024-03-19 22:46
getpath.c	44.99 KB	-rw-r--r--	2024-03-19 22:46
getpath.gcda	8.82 KB	-rw-r--r--	2025-06-04 09:21
getpath.o	160.52 KB	-rw-r--r--	2025-06-04 09:22
grpmodule.c	8.52 KB	-rw-r--r--	2024-03-19 22:46
hashlib.h	2.09 KB	-rw-r--r--	2024-03-19 22:46
iobase.gcda	9.63 KB	-rw-r--r--	2025-06-04 09:21
iobase.o	189.36 KB	-rw-r--r--	2025-06-04 09:22
itertoolsmodule.c	153.67 KB	-rw-r--r--	2024-03-19 22:46
itertoolsmodule.gcda	27.9 KB	-rw-r--r--	2025-06-04 09:21
itertoolsmodule.o	721.27 KB	-rw-r--r--	2025-06-04 09:22
ld_so_aix	6.12 KB	-rwxr-xr-x	2025-06-04 09:17
ld_so_aix.in	6.11 KB	-rw-r--r--	2024-03-19 22:46
main.c	17.65 KB	-rw-r--r--	2024-03-19 22:46
main.gcda	7.28 KB	-rw-r--r--	2025-06-04 09:21
main.o	147.24 KB	-rw-r--r--	2025-06-04 09:22
makesetup	7.67 KB	-rwxr-xr-x	2024-03-19 22:46
makexp_aix	2.67 KB	-rwxr-xr-x	2024-03-19 22:46
mathmodule.c	106.2 KB	-rw-r--r--	2024-03-19 22:46
md5module.c	15.51 KB	-rw-r--r--	2024-03-19 22:46
mmapmodule.c	47.75 KB	-rw-r--r--	2024-03-19 22:46
nismodule.c	12.89 KB	-rw-r--r--	2024-03-19 22:46
ossaudiodev.c	37.49 KB	-rw-r--r--	2024-03-19 22:46
overlapped.c	53.65 KB	-rw-r--r--	2024-03-19 22:46
posixmodule.c	413.46 KB	-rw-r--r--	2024-03-19 22:46
posixmodule.gcda	67.8 KB	-rw-r--r--	2025-06-04 09:21
posixmodule.h	791 B	-rw-r--r--	2024-03-19 22:46
posixmodule.o	1.49 MB	-rw-r--r--	2025-06-04 09:22
pwdmodule.c	8.89 KB	-rw-r--r--	2024-03-19 22:46
pwdmodule.gcda	4.96 KB	-rw-r--r--	2025-06-04 09:21
pwdmodule.o	84.35 KB	-rw-r--r--	2025-06-04 09:22
pyexpat.c	60.39 KB	-rw-r--r--	2024-03-19 22:46
readline.c	40.06 KB	-rw-r--r--	2024-03-19 22:46
resource.c	13.77 KB	-rw-r--r--	2024-03-19 22:46
rotatingtree.c	3.39 KB	-rw-r--r--	2024-03-19 22:46
rotatingtree.h	924 B	-rw-r--r--	2024-03-19 22:46
selectmodule.c	70.06 KB	-rw-r--r--	2024-03-19 22:46
sha1module.c	14.76 KB	-rw-r--r--	2024-03-19 22:46
sha256module.c	22.5 KB	-rw-r--r--	2024-03-19 22:46
sha512module.c	27.29 KB	-rw-r--r--	2024-03-19 22:46
signalmodule.c	52.45 KB	-rw-r--r--	2024-03-19 22:46
signalmodule.gcda	11.11 KB	-rw-r--r--	2025-06-04 09:21
signalmodule.o	235.02 KB	-rw-r--r--	2025-06-04 09:22
socketmodule.c	243.34 KB	-rw-r--r--	2024-03-19 22:46
socketmodule.h	8.56 KB	-rw-r--r--	2024-03-19 22:46
spwdmodule.c	6.69 KB	-rw-r--r--	2024-03-19 22:46
sre.h	2.83 KB	-rw-r--r--	2024-03-19 22:46
sre_constants.h	2.81 KB	-rw-r--r--	2024-03-19 22:46
sre_lib.h	52.08 KB	-rw-r--r--	2024-03-19 22:46
stringio.gcda	9.64 KB	-rw-r--r--	2025-06-04 09:21
stringio.o	193.45 KB	-rw-r--r--	2025-06-04 09:22
symtablemodule.c	3.67 KB	-rw-r--r--	2024-03-19 22:46
symtablemodule.gcda	4.25 KB	-rw-r--r--	2025-06-04 09:21
symtablemodule.o	55.01 KB	-rw-r--r--	2025-06-04 09:22
syslogmodule.c	10.64 KB	-rw-r--r--	2024-03-19 22:46
termios.c	22.52 KB	-rw-r--r--	2024-03-19 22:46
testcapi_long.h	6.77 KB	-rw-r--r--	2024-03-19 22:46
textio.gcda	23.51 KB	-rw-r--r--	2025-06-04 09:21
textio.o	645.09 KB	-rw-r--r--	2025-06-04 09:22
timemodule.c	57.23 KB	-rw-r--r--	2024-03-19 22:46
timemodule.gcda	8.3 KB	-rw-r--r--	2025-06-04 09:21
timemodule.o	177.2 KB	-rw-r--r--	2025-06-04 09:22
tkappinit.c	4.71 KB	-rw-r--r--	2024-03-19 22:46
tkinter.h	881 B	-rw-r--r--	2024-03-19 22:46
unicodedata.c	44.69 KB	-rw-r--r--	2024-03-19 22:46
unicodedata_db.h	531.75 KB	-rw-r--r--	2024-03-19 22:46
unicodename_db.h	2.12 MB	-rw-r--r--	2024-03-19 22:46
winreparse.h	1.59 KB	-rw-r--r--	2024-03-19 22:46
xxlimited.c	9.23 KB	-rw-r--r--	2024-03-19 22:46
xxlimited_35.c	6.88 KB	-rw-r--r--	2024-03-19 22:46
xxmodule.c	12.56 KB	-rw-r--r--	2024-03-19 22:46
xxsubtype.c	10.78 KB	-rw-r--r--	2024-03-19 22:46
xxsubtype.gcda	4.45 KB	-rw-r--r--	2025-06-04 09:21
xxsubtype.o	54.38 KB	-rw-r--r--	2025-06-04 09:22
zlibmodule.c	46.52 KB	-rw-r--r--	2024-03-19 22:46

Rename

/*
 * C Extension module to test Python internal C APIs (Include/internal).
 */

#if !defined(Py_BUILD_CORE_BUILTIN) && !defined(Py_BUILD_CORE_MODULE)
#  error "Py_BUILD_CORE_BUILTIN or Py_BUILD_CORE_MODULE must be defined"
#endif

/* Always enable assertions */
#undef NDEBUG

#define PY_SSIZE_T_CLEAN

#include "Python.h"
#include "pycore_atomic_funcs.h" // _Py_atomic_int_get()
#include "pycore_bitutils.h"     // _Py_bswap32()
#include "pycore_gc.h"           // PyGC_Head
#include "pycore_hashtable.h"    // _Py_hashtable_new()
#include "pycore_initconfig.h"   // _Py_GetConfigsAsDict()
#include "pycore_interp.h"       // _PyInterpreterState_GetConfigCopy()
#include "pycore_pyerrors.h"      // _Py_UTF8_Edit_Cost()

static PyObject *
get_configs(PyObject *self, PyObject *Py_UNUSED(args))
{
    return _Py_GetConfigsAsDict();
}

static PyObject*
get_recursion_depth(PyObject *self, PyObject *Py_UNUSED(args))
{
    PyThreadState *tstate = PyThreadState_Get();

/* subtract one to ignore the frame of the get_recursion_depth() call */
    return PyLong_FromLong(tstate->recursion_depth - 1);
}

static PyObject*
test_bswap(PyObject *self, PyObject *Py_UNUSED(args))
{
    uint16_t u16 = _Py_bswap16(UINT16_C(0x3412));
    if (u16 != UINT16_C(0x1234)) {
        PyErr_Format(PyExc_AssertionError,
                     "_Py_bswap16(0x3412) returns %u", u16);
        return NULL;
    }

uint32_t u32 = _Py_bswap32(UINT32_C(0x78563412));
    if (u32 != UINT32_C(0x12345678)) {
        PyErr_Format(PyExc_AssertionError,
                     "_Py_bswap32(0x78563412) returns %lu", u32);
        return NULL;
    }

uint64_t u64 = _Py_bswap64(UINT64_C(0xEFCDAB9078563412));
    if (u64 != UINT64_C(0x1234567890ABCDEF)) {
        PyErr_Format(PyExc_AssertionError,
                     "_Py_bswap64(0xEFCDAB9078563412) returns %llu", u64);
        return NULL;
    }

Py_RETURN_NONE;
}

static int
check_popcount(uint32_t x, int expected)
{
    // Use volatile to prevent the compiler to optimize out the whole test
    volatile uint32_t u = x;
    int bits = _Py_popcount32(u);
    if (bits != expected) {
        PyErr_Format(PyExc_AssertionError,
                     "_Py_popcount32(%lu) returns %i, expected %i",
                     (unsigned long)x, bits, expected);
        return -1;
    }
    return 0;
}

static PyObject*
test_popcount(PyObject *self, PyObject *Py_UNUSED(args))
{
#define CHECK(X, RESULT) \
    do { \
        if (check_popcount(X, RESULT) < 0) { \
            return NULL; \
        } \
    } while (0)

CHECK(0, 0);
    CHECK(1, 1);
    CHECK(0x08080808, 4);
    CHECK(0x10101010, 4);
    CHECK(0x10204080, 4);
    CHECK(0xDEADCAFE, 22);
    CHECK(0xFFFFFFFF, 32);
    Py_RETURN_NONE;

#undef CHECK
}

static int
check_bit_length(unsigned long x, int expected)
{
    // Use volatile to prevent the compiler to optimize out the whole test
    volatile unsigned long u = x;
    int len = _Py_bit_length(u);
    if (len != expected) {
        PyErr_Format(PyExc_AssertionError,
                     "_Py_bit_length(%lu) returns %i, expected %i",
                     x, len, expected);
        return -1;
    }
    return 0;
}

static PyObject*
test_bit_length(PyObject *self, PyObject *Py_UNUSED(args))
{
#define CHECK(X, RESULT) \
    do { \
        if (check_bit_length(X, RESULT) < 0) { \
            return NULL; \
        } \
    } while (0)

CHECK(0, 0);
    CHECK(1, 1);
    CHECK(0x1000, 13);
    CHECK(0x1234, 13);
    CHECK(0x54321, 19);
    CHECK(0x7FFFFFFF, 31);
    CHECK(0xFFFFFFFF, 32);
    Py_RETURN_NONE;

#undef CHECK
}

#define TO_PTR(ch) ((void*)(uintptr_t)ch)
#define FROM_PTR(ptr) ((uintptr_t)ptr)
#define VALUE(key) (1 + ((int)(key) - 'a'))

static Py_uhash_t
hash_char(const void *key)
{
    char ch = (char)FROM_PTR(key);
    return ch;
}

static int
hashtable_cb(_Py_hashtable_t *table,
             const void *key_ptr, const void *value_ptr,
             void *user_data)
{
    int *count = (int *)user_data;
    char key = (char)FROM_PTR(key_ptr);
    int value = (int)FROM_PTR(value_ptr);
    assert(value == VALUE(key));
    *count += 1;
    return 0;
}

static PyObject*
test_hashtable(PyObject *self, PyObject *Py_UNUSED(args))
{
    _Py_hashtable_t *table = _Py_hashtable_new(hash_char,
                                               _Py_hashtable_compare_direct);
    if (table == NULL) {
        return PyErr_NoMemory();
    }

// Using an newly allocated table must not crash
    assert(table->nentries == 0);
    assert(table->nbuckets > 0);
    assert(_Py_hashtable_get(table, TO_PTR('x')) == NULL);

// Test _Py_hashtable_set()
    char key;
    for (key='a'; key <= 'z'; key++) {
        int value = VALUE(key);
        if (_Py_hashtable_set(table, TO_PTR(key), TO_PTR(value)) < 0) {
            _Py_hashtable_destroy(table);
            return PyErr_NoMemory();
        }
    }
    assert(table->nentries == 26);
    assert(table->nbuckets > table->nentries);

// Test _Py_hashtable_get_entry()
    for (key='a'; key <= 'z'; key++) {
        _Py_hashtable_entry_t *entry = _Py_hashtable_get_entry(table, TO_PTR(key));
        assert(entry != NULL);
        assert(entry->key == TO_PTR(key));
        assert(entry->value == TO_PTR(VALUE(key)));
    }

// Test _Py_hashtable_get()
    for (key='a'; key <= 'z'; key++) {
        void *value_ptr = _Py_hashtable_get(table, TO_PTR(key));
        assert((int)FROM_PTR(value_ptr) == VALUE(key));
    }

// Test _Py_hashtable_steal()
    key = 'p';
    void *value_ptr = _Py_hashtable_steal(table, TO_PTR(key));
    assert((int)FROM_PTR(value_ptr) == VALUE(key));
    assert(table->nentries == 25);
    assert(_Py_hashtable_get_entry(table, TO_PTR(key)) == NULL);

// Test _Py_hashtable_foreach()
    int count = 0;
    int res = _Py_hashtable_foreach(table, hashtable_cb, &count);
    assert(res == 0);
    assert(count == 25);

// Test _Py_hashtable_clear()
    _Py_hashtable_clear(table);
    assert(table->nentries == 0);
    assert(table->nbuckets > 0);
    assert(_Py_hashtable_get(table, TO_PTR('x')) == NULL);

_Py_hashtable_destroy(table);
    Py_RETURN_NONE;
}

static PyObject *
test_get_config(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(args))
{
    PyConfig config;
    PyConfig_InitIsolatedConfig(&config);
    if (_PyInterpreterState_GetConfigCopy(&config) < 0) {
        PyConfig_Clear(&config);
        return NULL;
    }
    PyObject *dict = _PyConfig_AsDict(&config);
    PyConfig_Clear(&config);
    return dict;
}

static PyObject *
test_set_config(PyObject *Py_UNUSED(self), PyObject *dict)
{
    PyConfig config;
    PyConfig_InitIsolatedConfig(&config);
    if (_PyConfig_FromDict(&config, dict) < 0) {
        goto error;
    }
    if (_PyInterpreterState_SetConfig(&config) < 0) {
        goto error;
    }
    PyConfig_Clear(&config);
    Py_RETURN_NONE;

error:
    PyConfig_Clear(&config);
    return NULL;
}

static PyObject*
test_atomic_funcs(PyObject *self, PyObject *Py_UNUSED(args))
{
    // Test _Py_atomic_size_get() and _Py_atomic_size_set()
    Py_ssize_t var = 1;
    _Py_atomic_size_set(&var, 2);
    assert(_Py_atomic_size_get(&var) == 2);
    Py_RETURN_NONE;
}

static int
check_edit_cost(const char *a, const char *b, Py_ssize_t expected)
{
    int ret = -1;
    PyObject *a_obj = NULL;
    PyObject *b_obj = NULL;

a_obj = PyUnicode_FromString(a);
    if (a_obj == NULL) {
        goto exit;
    }
    b_obj = PyUnicode_FromString(b);
    if (b_obj == NULL) {
        goto exit;
    }
    Py_ssize_t result = _Py_UTF8_Edit_Cost(a_obj, b_obj, -1);
    if (result != expected) {
        PyErr_Format(PyExc_AssertionError,
                     "Edit cost from '%s' to '%s' returns %zd, expected %zd",
                     a, b, result, expected);
        goto exit;
    }
    // Check that smaller max_edits thresholds are exceeded.
    Py_ssize_t max_edits = result;
    while (max_edits > 0) {
        max_edits /= 2;
        Py_ssize_t result2 = _Py_UTF8_Edit_Cost(a_obj, b_obj, max_edits);
        if (result2 <= max_edits) {
            PyErr_Format(PyExc_AssertionError,
                         "Edit cost from '%s' to '%s' (threshold %zd) "
                         "returns %zd, expected greater than %zd",
                         a, b, max_edits, result2, max_edits);
            goto exit;
        }
    }
    // Check that bigger max_edits thresholds don't change anything
    Py_ssize_t result3 = _Py_UTF8_Edit_Cost(a_obj, b_obj, result * 2 + 1);
    if (result3 != result) {
        PyErr_Format(PyExc_AssertionError,
                     "Edit cost from '%s' to '%s' (threshold %zd) "
                     "returns %zd, expected %zd",
                     a, b, result * 2, result3, result);
        goto exit;
    }
    ret = 0;
exit:
    Py_XDECREF(a_obj);
    Py_XDECREF(b_obj);
    return ret;
}

static PyObject *
test_edit_cost(PyObject *self, PyObject *Py_UNUSED(args))
{
    #define CHECK(a, b, n) do {              \
        if (check_edit_cost(a, b, n) < 0) {  \
            return NULL;                     \
        }                                    \
    } while (0)                              \

CHECK("", "", 0);
    CHECK("", "a", 2);
    CHECK("a", "A", 1);
    CHECK("Apple", "Aple", 2);
    CHECK("Banana", "B@n@n@", 6);
    CHECK("Cherry", "Cherry!", 2);
    CHECK("---0---", "------", 2);
    CHECK("abc", "y", 6);
    CHECK("aa", "bb", 4);
    CHECK("aaaaa", "AAAAA", 5);
    CHECK("wxyz", "wXyZ", 2);
    CHECK("wxyz", "wXyZ123", 8);
    CHECK("Python", "Java", 12);
    CHECK("Java", "C#", 8);
    CHECK("AbstractFoobarManager", "abstract_foobar_manager", 3+2*2);
    CHECK("CPython", "PyPy", 10);
    CHECK("CPython", "pypy", 11);
    CHECK("AttributeError", "AttributeErrop", 2);
    CHECK("AttributeError", "AttributeErrorTests", 10);

#undef CHECK
    Py_RETURN_NONE;
}

static PyMethodDef TestMethods[] = {
    {"get_configs", get_configs, METH_NOARGS},
    {"get_recursion_depth", get_recursion_depth, METH_NOARGS},
    {"test_bswap", test_bswap, METH_NOARGS},
    {"test_popcount", test_popcount, METH_NOARGS},
    {"test_bit_length", test_bit_length, METH_NOARGS},
    {"test_hashtable", test_hashtable, METH_NOARGS},
    {"get_config", test_get_config, METH_NOARGS},
    {"set_config", test_set_config, METH_O},
    {"test_atomic_funcs", test_atomic_funcs, METH_NOARGS},
    {"test_edit_cost", test_edit_cost, METH_NOARGS},
    {NULL, NULL} /* sentinel */
};

static struct PyModuleDef _testcapimodule = {
    PyModuleDef_HEAD_INIT,
    "_testinternalcapi",
    NULL,
    -1,
    TestMethods,
    NULL,
    NULL,
    NULL,
    NULL
};

PyMODINIT_FUNC
PyInit__testinternalcapi(void)
{
    PyObject *module = PyModule_Create(&_testcapimodule);
    if (module == NULL) {
        return NULL;
    }

if (PyModule_AddObject(module, "SIZEOF_PYGC_HEAD",
                           PyLong_FromSsize_t(sizeof(PyGC_Head))) < 0) {
        goto error;
    }

return module;

error:
    Py_DECREF(module);
    return NULL;
}