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Search - "integration tests"
Current work project is microservices architecture out of 4 - 8 components.
It is fully Infrastructure as a Code automatized. I just change somewhere code, git pushing
And it automatically invokes Gitlab CI, terraform, ansible, kubernetes helm charts.
Auto checking itself with unit and integration tests in autoredeployed staging env. Then it saves tested results to docker registry and asks for one button verificating click to be rereleased to prod.
I just go for drink or eat food. While all the stuff is happening.
And I am proud that all the infrastructure, backend and frontend I made on my own.
I don't need to remember how to Deploy it. It is all automatized3
A beautiful gem ticket from a manager today:
Title: "Check Stripe "Snippet APK" that might help for integration into the app to track pricing easily."
Alright, it's very clear this particular individual has no idea what they are talking about, but, I'll give them the benefit of the doubt and read the ticket description!
Description: "I think stripe offers some sort of snippet that can be implemented into the app similar to FB pixel. (I could be wrong here..) let’s briefly check this, if it’s of value for our A/B-Tests → e.g. if it makes your life easier = good otherwise it’s not important."
I might as well replace the management team with GPT-3 at this point.
Or even just a simple Markov chain; that'd probably be more accurate if you want to match the ticket quality more exactly of this ABSOLUTE PILE OF HORSESHIT WASTE OF TIME I GET FED EVERY SINGLE FUCKING DAY.
Employer: Hey, we are moving an API update live tomorrow morning that could affect our apps. Can you regression test the apps to make sure they all work?
Me: The API team is pushing code overtop of live endpoints that can break them?
Employer: Yes, we need the updates to work with a new product we are developing.
Me: And nobody thought about versioning these endpoints so we guarantee uptime on all existing services using them now?
Employer: We looked at that but it cost extra and required us to use the cloud solution so we don’t use versioning.
Me: Okkk… I also take it that the API’s don’t have integration tests written?
Employer: What are integration tests? Are unit tests the same thing?
Me: No, so when do I need to regression test all 7 production apps?
Employer: The API’s are moving to production at 4am and we need it signed off by 7am.
Me: I only have 3 hours to regression test 7 production apps at 4am? Each app, if I just skim over them, would take me 2 hours each. I will do my best but that’s a very short time to ensure complete functionality.
Employer: Don’t you have unit tests?1
Unpopular opinion: unit tests are often overrated.
Although a well written test suite is almost essential in some parts of the application (I.E. business logic) I cringe when I see hundreds or thousands of line which “mocks” everything to test a micro service which just does CRUD operations on a database, in cases like that unit tests are just a waste of time because almost every operation involves a mock which may not behave like the real database and often needs to be rewritten when the code undergoes a huge refactoring. In these case a integration test suite is faster to write and way more helpful.7
I seriously cannot stress how important it is to build good reliable tests. Especially regression testing.
I am crying inside over the amount of time I've lost in my integration hell.
Seriously stupid shit that should have been tested but never did because I was too fucking lazy. Don't be me. Don't put yourself in the hell I'm in. Be better.1
probably every time I see my tests failing.
Each time I am writing tests I'm convincing myself "it's an investment", "spend 2 hours now to save 2 days later", "unit-tests are good".
And each time I'm chasing away ideas like "perhaps they are right, perhaps writing unit tests is a waste of time..", "this code is simple, it should ever break - why test it??", "In the 2 hours I'll spend writing those UT I could build another feature"
Yes, it is terribly annoying to write tests, especially after writing the production code (code-first approach). Why test code that you know works, right?
But after a few weeks, months or years, when the time comes to change your feature: enhance it, refactor it, build an integration with/from it, etc, I feel like a child who found a forgotten favourite candy in his pocket when I see my tests failing.
It means I did a very good job writing them
It means it was not a waste of time
it means these tests will now save me hours or days of trial-and-error change→compile→deploy→test cycles.
So yeah, whenever I see my tests fail, I feel warm and fussy inside :)3
Killing people is bad. But, there should be a law to allow killing people who don't write proper unit tests for their code. And also those "team leaders" who approve and merge code without unit tests.
Little backstory. Starts with a question.
What is the most critical part of a quoting tool (tool for resellers to set discounts and margins and create quotations)? The calculations, right?
If one formula is incorrect in one use case, people lose real money. This is the component which the user should be able to trust 100%. Right?
Okay. So this team was supposed to create a calculation engine to support all these calculations. The development was done, and the system was given to the QA team. For the last two months, the QA team finds bugs and assigns those to the development team and the development team fix those and assigns it back to the QA team. But then the QA team realizes that something else has been broken, a different calculation.
Upon investigation, today, I found out that the developers did not write a single unit test for the entire engine. There are at least 2000 different test cases involving the formulas and the QA team was doing all of that manually.
Now, Our continuous integration tool mandates coverage of 75%. What the developer did was to write a dummy test case, so that the entire code was covered.
I really really really really really think that developers should write unit tests, and proper unit tests, for each of the code lines (or, “logical blocks of code”) they write.20
I don't know if I have very high expectations, but joining a company as a Tech Lead and seeing that none of the 100 programmers in the team know the difference between unit and integration tests is kind of a letdown.3
What's the worst part about testing React components? Using the equivalent of fucking stone tools to do your component integration tests! We got errors with no context and errors with no stack trace, just spewing out bullshit! A sample:
The classic "Can't access .root on unmounted test renderer"
The unforgettable and ALWAYS visible "Warning: An update to YourShittyComponent inside a test was not wrapped in act(...)."
We do love it!