Test hash for native float subtype

Author: fangerer

graalpython/com.oracle.graal.python.test/src/tests/cpyext/test_object.py

@@ -326,13 +326,13 @@ def test_float_subclass(self):
         TestFloatSubclass = CPyExtType("TestFloatSubclass",
                                        """
                                        static PyTypeObject* testFloatSubclassPtr = NULL;
- 
+
                                        static PyObject* new_fp(double val) {
                                            PyFloatObject* fp = PyObject_New(PyFloatObject, testFloatSubclassPtr);
                                            fp->ob_fval = val;
                                            return (PyObject*)fp;
                                        }
- 
+
                                        static PyObject* fp_tpnew(PyTypeObject* type, PyObject* args, PyObject* kwargs) {
                                             double dval = 0.0;
                                             Py_XINCREF(args);
@@ -341,7 +341,7 @@ def test_float_subclass(self):
                                             }}
                                             return new_fp(dval);
                                        }
-                                        
+
                                        static PyObject* fp_add(PyObject* l, PyObject* r) {
                                            if (PyFloat_Check(l)) {
                                                if (PyFloat_Check(r)) {
@@ -360,15 +360,16 @@ def test_float_subclass(self):
                                        }
                                        """,
                                        cmembers="PyFloatObject base;",
-                                       tp_base="&PyFloat_Type", 
+                                       tp_base="&PyFloat_Type",
                                        nb_add="fp_add",
                                        tp_new="fp_tpnew",
                                        post_ready_code="testFloatSubclassPtr = &TestFloatSubclassType; Py_INCREF(testFloatSubclassPtr);"
         )
         tester = TestFloatSubclass(41.0)
         res = tester + 1
         assert res == 42.0, "expected 42.0 but was %s" % res
-        
+        assert hash(tester) != 0
+
     def test_custom_basicsize(self):
         TestCustomBasicsize = CPyExtType("TestCustomBasicsize", 
                                       '''