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gh-94808: cover PyMapping_HasKeyString and PyMapping_HasKey #98486

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Merged
merged 1 commit into from
Oct 26, 2022
Merged

gh-94808: cover PyMapping_HasKeyString and PyMapping_HasKey #98486

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12 changes: 12 additions & 0 deletions Lib/test/test_capi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -404,6 +404,18 @@ def items(self):
self.assertRaises(TypeError, _testcapi.get_mapping_values, bad_mapping)
self.assertRaises(TypeError, _testcapi.get_mapping_items, bad_mapping)

def test_mapping_has_key(self):
dct = {'a': 1}
self.assertTrue(_testcapi.mapping_has_key(dct, 'a'))
self.assertFalse(_testcapi.mapping_has_key(dct, 'b'))

class SubDict(dict):
pass

dct2 = SubDict({'a': 1})
self.assertTrue(_testcapi.mapping_has_key(dct2, 'a'))
self.assertFalse(_testcapi.mapping_has_key(dct2, 'b'))

@unittest.skipUnless(hasattr(_testcapi, 'negative_refcount'),
'need _testcapi.negative_refcount')
def test_negative_refcount(self):
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36 changes: 36 additions & 0 deletions Modules/_testcapimodule.c
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Expand Up @@ -4690,6 +4690,40 @@ get_mapping_items(PyObject* self, PyObject *obj)
return PyMapping_Items(obj);
}

static PyObject *
test_mapping_has_key_string(PyObject *self, PyObject *Py_UNUSED(args))
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Don't we need to call this function from test_capi.py? Or is that automatic?

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It is:

cpython/Lib/test/test_capi.py

Lines 1185 to 1189 in 964a92c

class Test_testcapi(unittest.TestCase):
locals().update((name, getattr(_testcapi, name))
for name in dir(_testcapi)
if name.startswith('test_') and not name.endswith('_code'))

{
PyObject *context = PyDict_New();
PyObject *val = PyLong_FromLong(1);

// Since this uses `const char*` it is easier to test this in C:
PyDict_SetItemString(context, "a", val);
if (!PyMapping_HasKeyString(context, "a")) {
PyErr_SetString(PyExc_RuntimeError,
"Existing mapping key does not exist");
return NULL;
}
if (PyMapping_HasKeyString(context, "b")) {
PyErr_SetString(PyExc_RuntimeError,
"Missing mapping key exists");
return NULL;
}

Py_DECREF(val);
Py_DECREF(context);
Py_RETURN_NONE;
}

static PyObject *
mapping_has_key(PyObject* self, PyObject *args)
{
PyObject *context, *key;
if (!PyArg_ParseTuple(args, "OO", &context, &key)) {
return NULL;
}
return PyLong_FromLong(PyMapping_HasKey(context, key));
}


static PyObject *
test_pythread_tss_key_state(PyObject *self, PyObject *args)
Expand Down Expand Up @@ -5932,6 +5966,8 @@ static PyMethodDef TestMethods[] = {
{"get_mapping_keys", get_mapping_keys, METH_O},
{"get_mapping_values", get_mapping_values, METH_O},
{"get_mapping_items", get_mapping_items, METH_O},
{"test_mapping_has_key_string", test_mapping_has_key_string, METH_NOARGS},
{"mapping_has_key", mapping_has_key, METH_VARARGS},
{"test_pythread_tss_key_state", test_pythread_tss_key_state, METH_VARARGS},
{"hamt", new_hamt, METH_NOARGS},
{"bad_get", _PyCFunction_CAST(bad_get), METH_FASTCALL},
Expand Down