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-rw-r--r--immutables/_map.c4
-rw-r--r--immutables/map.py3
-rw-r--r--tests/test_map.py3
3 files changed, 10 insertions, 0 deletions
diff --git a/immutables/_map.c b/immutables/_map.c
index 9a81556..9b406ea 100644
--- a/immutables/_map.c
+++ b/immutables/_map.c
@@ -3880,6 +3880,10 @@ mapmut_py_update(MapMutationObject *self, PyObject *args, PyObject *kwds)
return NULL;
}
+ if (mapmut_check_finalized(self)) {
+ return NULL;
+ }
+
if (arg != NULL) {
if (map_update_inplace(self->m_mutid, (BaseMapObject *)self, arg)) {
return NULL;
diff --git a/immutables/map.py b/immutables/map.py
index 7b230dd..4c5cd49 100644
--- a/immutables/map.py
+++ b/immutables/map.py
@@ -719,6 +719,9 @@ class MapMutation:
return True
def update(self, col=None, **kw):
+ if self.__mutid == 0:
+ raise ValueError('mutation {!r} has been finished'.format(self))
+
it = None
if col is not None:
if hasattr(col, 'items'):
diff --git a/tests/test_map.py b/tests/test_map.py
index 66d07e7..a99b856 100644
--- a/tests/test_map.py
+++ b/tests/test_map.py
@@ -1148,6 +1148,9 @@ class BaseMapTest:
with self.assertRaisesRegex(ValueError, 'has been finished'):
mm['a'] = 'b'
+ with self.assertRaisesRegex(ValueError, 'has been finished'):
+ mm.update(a='b')
+
def test_map_mut_13(self):
key1 = HashKey(123, 'aaa')
key2 = HashKey(123, 'aaa')