Python 未调用Pytest PropertyMock作为MagicMock的返回值
我试图将MagicMock实例的返回值模拟为PropertyMock,但它似乎在返回PropertyMock对象而不调用它,即不返回实际值Python 未调用Pytest PropertyMock作为MagicMock的返回值,python,django,django-rest-framework,pytest,pytest-django,Python,Django,Django Rest Framework,Pytest,Pytest Django,我试图将MagicMock实例的返回值模拟为PropertyMock,但它似乎在返回PropertyMock对象而不调用它,即不返回实际值 class MySerializer(serializers.ModelSerializer): class Meta: model = MyModel # ... fields = ( "my_field" ) my_field = serializ
class MySerializer(serializers.ModelSerializer):
class Meta:
model = MyModel
# ...
fields = (
"my_field"
)
my_field = serializers.SerializerMethodField()
def get_my_field(self, instance):
other_models = instance.other_models.filter(stuff="stuff")
if other_models:
# returns <class 'unittest.mock.PropertyMock'> instead of an actual value
print(type(other_models.get().my_property))
# throws error since it isn't receiving a string
return ujson.loads(other_models.get().my_property)
return {}
# test case
def test_hello(mocker):
expected_value = ujson.dumps({'hello': 2})
instance_mock = mocker.MagicMock()
other_model_mock = mocker.MagicMock()
other_model_mock.get().my_property = mocker.PropertyMock(return_value=expected_value)
instance_mock.other_models.filter.return_value = other_model_mock
serializer = MySerializer()
observed_value = serializer.get_my_field(instance_mock)
assert expected_value == observed_value
我不需要将其他的模拟设置为MagicMock,只需将其设置为PropertyMock即可
expected_value = {'hello', 2}
instance_mock = mocker.MagicMock()
other_model_mock = mocker.PropertyMock()
other_model_mock.get().my_property.return_value = ujson.dumps(expected_value)
instance_mock.other_models.filter.return_value = other_model_mock
# ...