Scaling the #Testing Pyramid in #TypeScript starts soon at #KCDC. We'll learn about #mocks, #UnitTests, #ComponentTests, #Cypress, and much more. https://www.kcdc.info/ Slides: https://robrich.org/slides/web-test-all-the-things/, Code: https://github.com/robrich/web-test-all-the-things
@nixCraft If you can’t poke it then it’s not stable. #unittests
Our next #JCON2025 session is live: 'Himalayan Peaks of #Testing Data Pipelines' with Pasha Finkelshteyn & Kseniia Tomak
Everybody knows how to test #backend applications: usually, it's just #unittests …
Grab your coffee and hit play: https://youtu.be/Vn7Sb99_h3I
For me, one of the best definitions of Test-Driven Development comes from the paper "Mock Roles, Not Objects" by Steve Freeman, Nat Pryce, Tim Mackinnon, Joe Walnes.
http://jmock.org/oopsla2004.pdf
> Sometimes, gnarly stuff needs doing. But you don’t wanna do it. So you refactor #unittests, soothing yourself with the lie that you’re doing real work. But an #LLM can be told to go refactor all your unit tests. An #agent can occupy itself for hours putzing with your tests in a VM and come back later with a PR. If you listen to me, you’ll know that. You’ll feel worse yak-shaving. You’ll end up doing… real work
If there's one piece of advice I'd give out to teams doing unit testing with dynamic langauges like TypeScript and Python, it's "turn off all your strict type-checking in the unit test framework."
In the production code, I care that my variables are well-defined and I'm not reaching deep into a module implementation to depend on a dependency. In unit tests? Go nuts.
How can you use code coverage and mutation testing to add tests to legacy code? At @mendercon last year, I demonstrated this powerful technique step by step on the Gilded Rose kata, which is hosted by @emilybache on her GitHub account: https://github.com/emilybache/GildedRose-Refactoring-Kata
You can watch the talk here: https://www.youtube.com/watch?v=0qna5cuzDI0
Choosing LLMs to generate high-quality unit tests for code
https://research.redhat.com/blog/2025/04/21/choosing-llms-to-generate-high-quality-unit-tests-for-code/
#Java #llm #unittests
For me this approach of writing tests after the production code add too much overhead to the development process. I like to prevent such unnecessary headaches. That's why I find Test-Driven Development to be the most effective approach to developing software.
Test-Driven Development can be considered as reducing your WIP (Work-In-Progress) at a microlevel. By focusing on writing just enough code to make a failing test pass, refactoring what you added and push to source control, we minimise the amount of unexecuted code (= WIP). Limiting WIP is essential for fast software delivery.
Welcome to this month's meetup on Tuesday 15th April 2025 at Reaktor!
Talks:
@maaretp - Exploratory Unit Testing with and for GenAI
Toni Vanhala - Stable and Observable: Celery Setup Essentials for SQL Pipelines
And the famous HelPy quiz!
https://www.meetup.com/helpy-meetups/events/307043355/
See you there!
Hey Mastodon, question for my #sysadmin and #DevOps types. Has anyone used #Pester and #PSScriptAnalyzer to set up unit testing for test driven development, particularly on (relatively) simple #PowerShell scripts like you might use for application detection, installation, and uninstallation from a system like #SCCM #Intune or #ManageEngine ?
Apologies for the buzzword bingo, but I’m trying to reach folks who may be following the hashtags, but not necessarily have a connection otherwise.
Who writes #unittests for #helm #charts? 
Same as for code, they speed up development and prevent recursions.
The helm-unittest plugin makes them easy to use.
https://github.com/helm-unittest/helm-unittest
While contributing to the kube-prometheus-stack chart last year, I discovered that the project contains a small suite of unit tests implemented in helm-unittest.
I found helm-unittest easy to read, write and execute. See for yourself 
️
In a way it’s similar to the people who generate #unittests for the code they’ve just written.
Nothing against those who have this big chunk of untested legacy code and happily see that #AI gives them a good starting ground of test cases.
But like with commit messages, unit tests can answer that WHY question about your production code. Why do we need that strange if branch? Oooh because of that edge case occurring in a given use case, tested by this test case over there. That’s something you can’t derive from your production code.
In #TDD, your test cases give your production code a reason to exist. In that sense, you’d be much better off to have AI generate the production code for your tests.
One thing for my job I’m looking forward to about #AI: Refactoring large systems
Doing a refactoring that involves hundreds of classes and multiple changes of infrastructure has been a thing that can take weeks, even months.
However, if you have good test coverage, you can let an LLM can do the drudge work for you and just verify it did what it said it did.
TTD is a must anyway, if you use LLM’s for helping you werite code.
#programming #refactoring #unittests
Migrate from MSTest to xUnit using a Roslyn analyzer by Gérald Barré.
https://www.meziantou.net/migrate-from-mstest-to-xunit-using-a-roslyn-analyzer.htm
#dotnet #roslyn #csharp #mstest #xunit #unittests #migration
Migrate from MSTest to xUnit u...
#Python really needs better support for #parameterised #unittests. The paremeterized python package is okay, but leaves much to be desired.
I would love have package that integrates with my #IDE, (#VScode, #PyCharm) etc.
A friend of mine is looking for one/two freelancers for the following
- Writing #unittests in #python
- Basic #pqsql dB optimization.
Ideally from #Europe. If you are one or know one, please DM me.
"Will you write component tests with me?" 
Forget "Will you marry me?" as this is the real question of commitment. A perfect mix of unit and E2E tests, proving microservices true behaviour. Because nothing says "forever" like solid test coverage. 
https://martinfowler.com/articles/microservice-testing/#conclusion-summary
#CodingLove #TestingIsCaring #Microservices #ComponentTesting #UnitTests #E2ETests #DevHumor #TechRomance #CodeCoverage #QA #DevLife #coding #developer
