Mockstar -- Mocking Like a Rockstar!
Mockstar is a bunch of small enhances on top of Mock library that can give you a lot of mocking and unit-testing goods.
Mockstar is still in development, but my team already uses it in our project heavily, so it should get stable API soon.
Unit-testing with MockStar
So, you want to implement and test your unit. Let's say it's a function :func:`create_user` that will look like this when it is done:
This unit consists of input-parameters:
and seven side-effects:
- User model
- not_md5_and_has_salt function
- count_score function
- choose_low_quality_avatar function
- choose_high_quality_avatar function
- mail business-logic
- discover_possible_friends function
So, to test this unit in isolation we would need to mock-out all side-effects, on every test put some return-values so that they will fit our if-else clauses, and finally, generate suitable input-parameters.
With Mock library, you would do something like this:
Problems I see:
- need to repeat mocked names as test parameters
- need to write autospec=True again and again
- need to write module prefix app.bl.user on every patch call
- need to patch on every test case
- need to add common return_values and assign to some variables (like user) that we'll use later in asserts
- side_effects take a lot of space in our testing code, I want to separate them
With mockstar your test would look something like this:
I hope you like mockstar's aspiration to fight copy-paste and useless typing.
To install mockstar, just type:
pip install mockstar