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News

Medium
medium.com > @faisalmsiddique > cuped-how-to-make-your-a-b-test-smarter-without-finding-more-users-90cf9cecb681

CUPED: How to Make Your A/B Test Smarter Without Finding More Users

9+ hour, 2+ min ago   (694+ words) An intuitive, no-heavy-math guide to one of the most useful ideas in product experimentation to not get DUPED. Imagine you’re a …...

DEV Community
dev.to > styrow_dev > designing-resilient-selenium-tests-for-highly-dynamic-spas-2nkm

Designing Resilient Selenium Tests for Highly Dynamic SPAs

21+ hour, 5+ min ago   (234+ words) 🔥 SDET Interview Scenario of the Day: Your team's Selenium tests for a dynamic financial SPA are notoriously flaky. Elements are re-rendered, data updates asynchronously, and StaleElementReferenceException and NoSuchElementException plague your CI pipeline. How do you build a resilient, maintainable test…...

DEV Community
dev.to > susumun > what-is-visual-regression-testing-how-screenshot-diffing-catches-layout-breaks-1fmi

What Is Visual Regression Testing? How Screenshot Diffing Catches Layout Breaks

1+ day, 7+ hour ago   (186+ words) Note: "regression" in software means something that used to work correctly breaking as a side effect of some other change. Visual regression testing detects that kind of breakage specifically in how a page looks, rather than in its logic or…...

DEV Community
dev.to > ripplexdev > batch-transaction-qa-test-report-5g5g

Batch Transaction - QA Test Report

4+ day, 8+ hour ago   (132+ words) Test Report Date: 9/8/2026 Prepared By: sgramkumar Environment: GitLab CI Runner (nix-debian) Network: xrpld devnet + private CI network This report presents the results of QA testing performed on Batch (XLS-56) Transactions across xrpld servers. Coverage targets the BatchV1_1 amendment, which supersedes the…...

DEV Community
dev.to > jimtt > i-got-tired-of-re-recording-broken-tests-so-i-built-my-own-testing-tool-1h44

I got tired of re-recording broken tests, so I built my own testing tool

6+ day, 5+ hour ago   (808+ words) Quick disclosure so nobody feels tricked: I built and run a no-code web UI testing tool called CueCast. This is the story of how it went from a personal annoyance to a shipped product — including the parts that did NOT…...

DEV Community
dev.to > johnnyv5g > independent-test-cases-the-foundation-of-a-reliable-automation-test-suite-5e8

Independent Test Cases: The Foundation of a Reliable Automation Test Suite

6+ day, 11+ hour ago   (1332+ words) A reliable automated test suite should be able to run tests independently, in isolation, and in parallel. That sounds obvious, but one of the most common causes of unreliable automation is something much less obvious: shared test data. When multiple…...

DEV Community
dev.to > yulingg_zhang_dfbce7a345a > testing-a-deterministic-browser-game-seeds-replay-and-invalid-state-12ob

Testing a deterministic browser game: seeds, replay and invalid state

6+ day, 15+ hour ago   (374+ words) A random game is easier to debug when the same inputs produce the same result. In HoopTrait, a browser basketball project, the Lab mode combines eight selected traits and generates a fictional career. The interesting engineering problem is keeping replay,…...

DEV Community
dev.to > yusufcemres > i-pointed-my-ui-auditing-tool-at-three-sites-it-had-never-seen-all-seven-bugs-it-found-were-its-12cb

I pointed my UI-auditing tool at three sites it had never seen. All seven bugs it found were its own.

1+ week, 11+ hour ago   (807+ words) The line at the bottom of the report said: Records with automated findings: 8/4 Enter... Tagged with testing, webdev, mcp, showdev....

DEV Community
dev.to > mahirhir > 2500-tests-in-my-public-repository-and-nothing-was-running-them-3chn

2500 tests in my public repository and nothing was running them

1+ week, 15+ hour ago   (770+ words) Someone asked me a simple question about my own project: what are all those tests actually for. The honest answer turned out to be that they were not for anything, because nothing was running them. There was no CI. No.github…...

DEV Community
dev.to > constdrop > stop-writing-ruby-tests-in-js-template-literals-meet-rspec-wasm-oco

Stop Writing Ruby Tests in JS Template Literals: Meet rspec-wasm

1+ week, 1+ day ago   (210+ words) If you have built applications with ruby.wasm, you might have encountered a frustrating developer experience when writing unit tests. Testing Ruby logic compiled to WebAssembly usually meant embedding Ruby code inside JavaScript template literals and asserting the results using…...