Python

🤔 What’s a syscall, anyway? Image credits: Mike Norris via Pexels Every time your program reads a file, writes to a socket, or allocates memory, at some point it has to ask the kernel to actually do it. That ask is a syscall, the narrow, well defined boundary where userspace code crosses into the kernel. write(), read(), open(), mmap(), these aren’t just library functions, they’re the entire vocabulary your program has for talking to the outside world. Everything else, fwrite, Python’s file.write(), std::fs::File, is just a wrapper around this same handful of kernel entry points. ...

🎉 Happy New Year! As anyone working with OpenQA knows, it is a powerful tool for automated testing. But sometimes, the workflow around re-triggering those tests for investigation purposes can feel a bit… Manual. Recently, I found myself in a repetitive cycle while debugging complex test scenarios. My workflow looked something like this: Take a known “good” job URL. Open a scratchpad editor. Craft a long openqa-clone-job command with tons of specific override parameters (BUILD=0, custom git branches, skipping specific modules, etc.). Run the command in the terminal, wait for the output. Painfully visual scan of the terminal output, to identify the newly created job URLs, and select them with my mouse, to copy them. Paste them into openqa-mon or a text file to track their progress. Till now I used a Bash script that kind of helped, but modifying giant arrays of arguments for every different debugging scenario was annoying and error-prone. ...

🤓 Intro Manual testing of GUI applications can become tedious and error-prone as features and complexity increase. Headless testing offers a solution by automating UI interactions without the need for a physical display. This approach allows for faster test execution, improved repeatability, and seamless integration with continuous integration and continuous delivery (CI/CD) pipelines. In this post, we’ll explore how to leverage pytest-qt, a powerful framework for headless testing of PySide/PyQt applications. ...

TLDR: This script now answers the question “Do some of my openSUSE packages have newer versions in other distros?” As a following on previous post, I added an useful feature in order to have more information about a package. Since I maintain some openSUSE packages, I want to be informed if they gets outdated and if other packagers have released newer versions. ...