All Questions
Tagged with python-unittest.mock magicmock
14 questions
1
vote
2
answers
109
views
MagickMock() assert_called not recognizing calls
i have a function like this, stored in file example.py:
def my_func(file):
conn = get_connection()
conn.upload_file(file)
conn.execute_file(file)
Now, i want to test it, so i`m using ...
- 187
0
votes
0
answers
41
views
unittest for decorator in python
class BackgroundProcess:
def background(f):
from functools import wraps
@wraps(f)
def wrapped(*args, **kwargs):
loop = asyncio.get_event_loop()
if ...
- 21
1
vote
1
answer
430
views
Mock the fetchone() method of the Mysql Cursor class and set its return value to None
I'm trying to make a MagicMock instance of the mysql connector, but I need for the method fetchone() to return None.
This is what I've done so far:
with mock.patch('mysql.connector.cursor') as dbmock, ...
- 344
1
vote
0
answers
71
views
How to add args for mocked functions with MagicMock
I'm using MagicMock from unittest to mock an object in a class for unit tests. I am able to use the return_value to set return values for function calls but want to make it dynamic so that the ...
- 11
1
vote
1
answer
44
views
Monkeypatching `__call__` on MagicMock
Let's say I define a helper method to monkeypatch a simple modification into the __call__ behavior of an existing object:
def and_print_on_call(instance):
class AndPrintOnCall(type(instance)):
...
- 13
3
votes
1
answer
873
views
Child Class from MagicMock object has weird spec='str' and can't use or mock methods of the class
When a class is created deriving from a MagicMock() object it has an unwanted spec='str'. Does anyone know why this happens? Does anyone know any operations that could be done to the MagicMock() ...
- 938
0
votes
0
answers
115
views
How do I mock a method that uses requests.get with the WITH keyword in my class?
I am having trouble understanding how mocking works when the get responses involve using the with keyword. Here is an example I am following for my class `Album' and I have been successful when I am ...
- 1
1
vote
0
answers
262
views
My AWS lambda in python. It downloads a file from S3 and reads that file. Now I need to write a unittest mock test for that
I have an AWS lambda written in python. The lambda downloads a file from S3 to the folder /tmp/records. Then the lambda reads that file. Now I need to write a unit test for that. I need to mock the S3 ...
- 83
0
votes
0
answers
101
views
Mocking method from another class with python unittest mock
I have a class and within that class there are used methods from another classes. Let's say it looks like that (just an example):
from jobs.fruit import Fruit
from jobs.veggie import Veggie
class ...
- 1
1
vote
1
answer
2k
views
MagicMock's reset_mock not properly resetting sub-mock's side_effect
I have a long-lived patch on a class, whose made instance undergoes multiple batches of assertions. Please see the below code snippet for the scenario.
It exposes (what I think is annoying) behavior ...
- 2,331
0
votes
1
answer
202
views
How to magic mock long chained calls?
To test the following functino, I want to assert .filter() is called once with parameter filters.
def get_instances(session: boto3.session.Session, filters):
instances = session.resource('ec2')....
- 29.1k
2
votes
1
answer
1k
views
StopIteration when mocking base class of own class
In a rather complex test scenario I need to mock the base class of one of my own classes and instantiate the latter several times. When I do that my test errors with a StopIteration exception. Here's ...
- 505
4
votes
0
answers
627
views
Python unittest returns MagicMock object instead of return value
I have a python which has a class A. Class A object has a method that takes a list as input and sends a post request to a client endpoint to create new sources in the database and returns a tuple of ...
- 471
0
votes
1
answer
2k
views
python mocks a function properly, however the call count is not accounted
I have a class like the below:
Class a:
def fn1(self):
p1=multiprocessing.Process(self.fn2, (arg1,)
p1.start()
p1.join()
def fn2(self, arg1):
…
I am trying to ...
- 59