add slot tests for __setattr__ and __delattr__

test/test_extension/slots_test.c

@@ -626,6 +626,16 @@ call_funcs(PyObject* _module, PyObject* args) {
         printf("tp_getattr doesnt exist\n");
     }
 
+    // we aren't checking for tp_getattro.  it's set in cpython and not in pyston
+
+    if (cls->tp_setattr) {
+        printf("tp_setattr exists\n");
+    } else {
+        printf("tp_setattr doesnt exist\n");
+    }
+
+    // we aren't checking for tp_setattro.  it's set in cpython and not in pyston
+
     if (cls->tp_as_mapping) {
         printf("tp_as_mapping exists\n");
         PyMappingMethods* map = cls->tp_as_mapping;

test/tests/capi_slots.py

@@ -161,3 +161,53 @@ try:
     print c.foo()
 except SystemError, e:
     print e
+
+
+print "**** setattr on class def"
+class C7(C):
+    def __setattr__(self, attr, val):
+        print "setattr", attr, val
+
+c = C7()
+slots_test.call_funcs(c)
+c.foo = 1
+c.bar = 2
+c.baz = 3
+
+
+print "**** setattr set after the fact"
+def _setattr_(self, attr, val):
+    print "_setattr_", attr, val
+
+c = C6()
+c.__setattr__ = _setattr_
+slots_test.call_funcs(c)
+c.foo = 1
+c.bar = 2
+c.baz = 3
+
+print "**** delattr on class def"
+class C8(C):
+    def __delattr__(self, attr):
+        print "delattr", attr
+
+c = C8()
+slots_test.call_funcs(c)
+delattr(c, 'foo')
+del c.bar
+
+print "**** delattr set after the fact"
+def _delattr_(self, attr):
+    print "_delattr_", attr
+
+c = C6()
+c.__delattr__ = _delattr_
+slots_test.call_funcs(c)
+try:
+    delattr(c, 'foo')
+except Exception as e:
+    pass
+try:
+    del c.bar
+except Exception as e:
+    pass