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import py
from pypy.module.cpyext.test.test_cpyext import AppTestCpythonExtensionBase
from pypy.module.cpyext.test.test_api import BaseApiTest
from pypy.module.cpyext.pyobject import make_ref
class AppTestBorrow(AppTestCpythonExtensionBase):
def test_tuple_borrowing(self):
module = self.import_extension('foo', [
("test_borrowing", "METH_NOARGS",
"""
PyObject *t = PyTuple_New(1);
if (t == NULL) {
return NULL;
}
PyObject *f = PyFloat_FromDouble(42.0);
PyObject *g = NULL;
printf("Refcnt1: %ld\\n", f->ob_refcnt);
PyTuple_SetItem(t, 0, f); // steals reference
printf("Refcnt2: %ld\\n", f->ob_refcnt);
f = PyTuple_GetItem(t, 0); // borrows reference
printf("Refcnt3: %ld\\n", f->ob_refcnt);
g = PyTuple_GetItem(t, 0); // borrows reference again
printf("Refcnt4: %ld\\n", f->ob_refcnt);
printf("COMPARE: %i\\n", f == g);
fflush(stdout);
Py_DECREF(t);
Py_RETURN_TRUE;
"""),
])
assert module.test_borrowing() # the test should not leak
def test_borrow_destroy(self):
module = self.import_extension('foo', [
("test_borrow_destroy", "METH_NOARGS",
"""
PyObject *i = PyLong_FromLong(42);
PyObject *j;
PyObject *t1 = PyTuple_Pack(1, i);
if (t1 == NULL) {
return NULL;
}
PyObject *t2 = PyTuple_Pack(1, i);
if (t2 == NULL) {
return NULL;
}
Py_DECREF(i);
i = PyTuple_GetItem(t1, 0);
PyTuple_GetItem(t2, 0);
Py_DECREF(t2);
j = PyLong_FromLong(PyLong_AsLong(i));
Py_DECREF(t1);
return j;
"""),
])
assert module.test_borrow_destroy() == 42
def test_double_borrow(self):
module = self.import_extension('foo', [
("run", "METH_NOARGS",
"""
PyObject *t = PyTuple_New(1);
PyObject *s = PyRun_String("set()", Py_eval_input,
Py_None, Py_None);
PyObject *w = PyWeakref_NewRef(s, Py_None);
PyTuple_SetItem(t, 0, s);
PyTuple_GetItem(t, 0);
PyTuple_GetItem(t, 0);
Py_DECREF(t);
return w;
"""),
])
wr = module.run()
# check that the set() object was deallocated
self.debug_collect()
assert wr() is None
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