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[3.13] gh-127906: Test the limited C API in test_cppext (GH-127916) (#127919)

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gh-127906: Test the limited C API in test_cppext (GH-127916)
(cherry picked from commit d05a4e6a0d)

Co-authored-by: Victor Stinner <vstinner@python.org>
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Miss Islington (bot) 2024-12-13 15:12:07 +01:00 • committed by GitHub
parent 0f38b897f9
commit 78095c9052
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4 changed files with 26 additions and 3 deletions
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9
Lib/test/test_cppext/extension.cpp
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@ -62,6 +62,7 @@ test_api_casts(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
Py_ssize_t refcnt = Py_REFCNT(obj);
assert(refcnt >= 1);
#ifndef Py_LIMITED_API
// gh-92138: For backward compatibility, functions of Python C API accepts
// "const PyObject*". Check that using it does not emit C++ compiler
// warnings.
@ -74,6 +75,7 @@ test_api_casts(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
assert(PyTuple_GET_SIZE(const_obj) == 2);
PyObject *one = PyTuple_GET_ITEM(const_obj, 0);
assert(PyLong_AsLong(one) == 1);
#endif
// gh-92898: StrongRef doesn't inherit from PyObject but has an operator to
// cast to PyObject*.
@ -106,6 +108,12 @@ test_unicode(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
}
assert(PyUnicode_Check(str));
assert(PyUnicode_GetLength(str) == 3);
assert(PyUnicode_ReadChar(str, 0) == 'a');
assert(PyUnicode_ReadChar(str, 1) == 'b');
#ifndef Py_LIMITED_API
assert(PyUnicode_GET_LENGTH(str) == 3);
// gh-92800: test PyUnicode_READ()
@ -121,6 +129,7 @@ test_unicode(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
assert(PyUnicode_READ(ukind, const_data, 2) == 'c');
assert(PyUnicode_READ_CHAR(str, 1) == 'b');
#endif
Py_DECREF(str);
Py_RETURN_NONE;