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-rw-r--r--test/ext/test_mutable.py43
1 files changed, 43 insertions, 0 deletions
diff --git a/test/ext/test_mutable.py b/test/ext/test_mutable.py
index 81d2136e3..5b6d3e7cf 100644
--- a/test/ext/test_mutable.py
+++ b/test/ext/test_mutable.py
@@ -725,6 +725,49 @@ class MutableWithScalarJSONTest(_MutableDictTestBase, fixtures.MappedTest):
self._test_non_mutable()
+class MutableColumnCopyJSONTest(_MutableDictTestBase, fixtures.MappedTest):
+
+ @classmethod
+ def define_tables(cls, metadata):
+ import json
+ from sqlalchemy.ext.declarative import declarative_base
+
+ class JSONEncodedDict(TypeDecorator):
+ impl = VARCHAR(50)
+
+ def process_bind_param(self, value, dialect):
+ if value is not None:
+ value = json.dumps(value)
+
+ return value
+
+ def process_result_value(self, value, dialect):
+ if value is not None:
+ value = json.loads(value)
+ return value
+
+ MutableDict = cls._type_fixture()
+
+ Base = declarative_base(metadata=metadata)
+
+ class AbstractFoo(Base):
+ __abstract__ = True
+
+ id = Column(Integer, primary_key=True,
+ test_needs_autoincrement=True)
+ data = Column(MutableDict.as_mutable(JSONEncodedDict))
+ non_mutable_data = Column(JSONEncodedDict)
+ unrelated_data = Column(String(50))
+
+ class Foo(AbstractFoo):
+ __tablename__ = "foo"
+
+ assert Foo.data.property.columns[0].type is not AbstractFoo.data.type
+
+ def test_non_mutable(self):
+ self._test_non_mutable()
+
+
class MutableListWithScalarPickleTest(_MutableListTestBase,
fixtures.MappedTest):