[英]Pytest PropertyMock as return_value for MagicMock does not get invoked
[英]Change MagicMock return_value instance method callable to PropertyMock
我試圖將我的MagicMock
上的實例方法的可調用方法MagicMock
為PropertyMock
因為這是如何訪問它的方法(Django模型列)。 但是測試失敗了
_mock_self = <PropertyMock name='get().my_prop' id='4524632776'>
給出以下代碼
# view
def get(self request):
# stuff...
obj = MyModel.objects.get(id=2)
# more stuff...
print(obj.my_prop)
some_val = MyOtherModel(my_prop=obj.my_prop)
# tests
def test_my_test(mocker):
other_obj = mocker.patch("app.views.MyOtherModel")
obj_get = mocker.patch("app.views.MyModel.objects.get")
obj_prop = mocker.PropertyMock(return_value=1)
# This should translate to an instance of MyModel i.e. MyModel().my_prop
obj_get.return_value.my_prop = obj_prop
# run view
obj_prop.assert_called_once() # Says never invoked
# Failed as my_prop was a PropertyMock instead of actual value
other_obj.assert_called_once_with(my_prop=obj_prop)
打印聲明顯示
<PropertyMock name='get().my_prop' id='4524632776'>
因此看來,它是與實際上未被調用的相同實例
我還嘗試過直接從模型中修補該屬性,但是由於Mocks
不相同,因此似乎不起作用。
def test_my_test(mocker):
other_obj = mocker.patch("app.views.MyOtherModel")
obj_prop = mocker.patch("app.views.MyModel.my_prop", new_callable=mocker.PropertyMock)
obj_get = mocker.patch("app.views.MyModel.objects.get")
obj_get.return_value.my_prop = obj_prop
# run view
obj_prop.assert_called_once()
# Failed as my_prop was a PropertyMock instead of actual value
other_obj.assert_called_once_with(my_prop=obj_prop)
失敗了...
_mock_self = <PropertyMock name='my_prop' id='4543022192'>
但是打印
<MagicMock name='get().my_prop' id='4543752232'>
編輯在其他補丁中添加,可以更准確地描述實現
不需要使用PropertyMock
覆蓋所需的屬性,因為我只需將所需的值分配給MagicMock
。
def test_my_test(mocker):
other_obj = mocker.patch("app.views.MyOtherModel")
obj_get = mocker.patch("app.views.MyModel.objects.get")
obj_get.return_value.my_prop = 2
# run view
other_obj.assert_called_once_with(my_prop=obj_get.return_value.my_prop)
.assert_called_once
用於檢查是否曾經調用過該屬性,並在最初失敗的.assert_called_once_with
失敗時添加了該屬性。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.