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The browser is often the easiest part of an end-to-end test. Consider a test that verifies a user can complete an overdue task. The visible interaction is small: sign in, find the task, click Complete, and observe the new status. Before any of that can happen, the test needs a workspace, a user, a project, and […] The post Write End-to-End Tests in Your Backend’s Language appeared first on Atomic Spin.
Learn how to test UWP and WinUI 3 apps with MSTest and Microsoft.Testing.Platform across packaged, unpackaged, and AppContainer hosts. The post UWP and WinUI 3 apps: UI testing with MSTest appeared first on .NET Blog.
We used GitHub Copilot coding agents to build an app across different time zones. The AI wrote the code, but prompts, tests, guardrails, and pull requests made it software development rather than vibe coding.
We recently sped up our integration tests by a factor of ten by running many of them in parallel. There were several flaky tests in the new test suite. Claude was really useful in getting rid of almost all flakyness, … Continue reading →
tldr: the live version is here: https://curl.se/perf/ How fast is “fast” and is it good enough? Does it run as fast now as it did before or was there a regression? What exactly needs to be fast? How fast is it? These are questions that many projects and products face, and in curl we are … Continue reading curl performance →
Let's say you have a long-ish Cypress test and you know a place where it might fail. You want to stop / skip the test commands.
Quality isn't decided in the final review. The teams with the smoothest launches built it through daily habits, long before anyone thought about a release date.
You might see a new option to sort comments on web, in addition to chronological sorting options: Best comments first. We want to make it easier to find interesting conversation, and demote spammy comments. Look for this option in the comments view on any post, only on web for now. We’re still testing and fine-tuning how this works, so your feedback is welcome — leave it below!
Imagine a typical application that loads some data. The app starts in the initial state, starts loading, then one of 3 possible states ar
Have you ever encountered end-to-end test error "... failed because the page updated as a result of this command, but you tried to c
Loading skeletons are displayed while the real data is loading. For example, the login passwords are displayed after 1 second in the GIF
Well, I am happy to report Cypress-the-company is all in on test auto-healing in its new cy.prompt command (which I recreated locally as cypress-think plugin). Let's look at the screenshots Cypress put in the blog post: The test shows Cypress auto-healing in practice. The test had a prompt like "Turn on dark mode", which used to resolve to some button (unclear). Now the button is gone, but the test has been "auto-healed" to find another button. We can see the details of the healing by clicking on the "Turn on dark mode" step in the Command Log: Please do not use any auto-healing in your…
Do not confuse negative assertion with a quick timeout. Let me get back to the testing of negative states one more time. Recently, I have read a pretty good blog post How to test that cache works with Cypress by Walmyr. A piece of Cypress test syntax caught my eye: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 cy.search(randomWord).then(() => { expect(count, `network calls to fetch ${randomWord}`).to.equal( 1, ) cy.wait('@random') cy.search(randomWord).then(() => { expect( count, `network calls to fetch ${randomWord}`, ).to.equal(1) }) }) The test above confirms that the web page caches the search…
Recently Cypress announced a change in how it will handle environment variables. Variables were always public and accessible to the appli
Everyone benchmarks RPG migration test suites on coverage. That's the wrong metric — the real deliverable is behavioral equivalence a non-programmer will sign off on, and Gherkin is the only format the people who actually know the rules can read. The post Why Gherkin Is the Right Testing Tool for RPG Migration — And It Has Nothing to Do With BDD appeared first on Strumenta.
While I am sceptical of using AI for release code, it has plenty of uses that previously weren’t practical, such as determining how easy your software is to use. If an AI can “figure it out” with a few hints, then you are on the right track. For me, the value of AI is what you learn using it. For more Techincal Information on Chronicle-FIX What AI Does Well and What It Doesn’t Claude and Codex are effective for producing idiomatic code; for low-latency code, it needs a significant body of example code. In this case, it was able to utilise sample code for benchmarks. If it was being used to…
Having used Claude Code for a few months now, I have noticed how software development has changed for me. I write a lot less code, but I spend more time understanding and testing the code Claude has written. The proportions … Continue reading →
A clean v2 API is coming dereuromark/cakephp-fixture-factories just shipped 2.0.0 RC. After a year of incremental cleanup — typed persistEntity() / persistEntities(), the TEntity template on BaseFactory, redirected deprecations — the next major was the right moment to redesign the surface coherently rather than keep layering. This post walks through the why, the what, and the how […]
We were annoyed with the slow performance of our frontend unit tests, so we made them much faster! It turned out that swapping out the test runner is an easy and efficient way to keep the migration effort low, while reaping the benefits of much faster execution times.
Test automation has always been a field that requires a lot of work. Quality assurance teams were often stuck in a cycle of fixing broken tests, maintaining scripts by hand, and updating locators in a way that wasn't reliable. As software release processes got shorter, this old way of doing
I was working with a readonly model in Rails the other day and ran into an issue whilst testing it. Here's what I ran into and the solution I came up with. Readonly models are a great way to signal that, well, you should only ever read them, not write them. Maybe you have some external system that connects to the database for writes, or maybe your Rails app connects to some data warehouse for some queries or reports. It's can be useful to have a safeguard to prevent accidental errant writes. It's actually really simple to make a model readonly, you just need to override the readonly? method:…
For the last few months, I have been developing a new reporting application. Early on, I decided to add a –dry-run option to the run command. This turned out to be quite useful – I have used it many times … Continue reading →
We take code correctness and code quality seriously at Wealthfront. One of the most effective ways we ensure that our code is correct is through rigorous unit testing and strong typing. In Kotlin, sealed classes and sealed interfaces offer a powerful tool to model restricted class hierarchies. They provide strong guarantees about the types in... Read more
In this series of posts, we write a fast bytecode compiler and a virtual machine for arithmetic in Haskell. We explore the following topics: Parsing arithmetic expressions to Abstract Syntax Trees (ASTs). Unit testing for our parser. Interpreting ASTs. Compiling ASTs to bytecode. Disassembling and decompiling bytecode. Unit testing for our compiler. Property-based testing for our compiler. Efficiently executing bytecode in a virtual machine (VM). Unit testing and property-based testing for our VM. Benchmarking our code to see how the different passes perform. All the while keeping an eye on…
Since 2002, I have been keeping track of all the tricky bugs I have come across. Nine years ago, I wrote a blog post with the lessons learned from the bugs up till then. Now I have reviewed all the … Continue reading →
Table of Contents Introduction Superhuman Intelligence Is Already Here ATMs Didn’t Replace Bank Tellers About Me Multidimensional Growth Areas of Career Development Scope of Consideration Roles Where All Areas Are Important The Range of a Founder’s Role How Will AI Change Development? How You Ask the Question Changes the Result Some key terms in understanding how Generative AI works Estimating the Value of AI-Generated Documentation AI and the Reverse Baltimore Phenomenon The Baltimore Phenomenon The Reverse Baltimore Phenomenon Filling a void Brainstorming Ideas Sample Project 2048 Using…
This article was AI-generated using this project as context. AIDE Project. The purpose of this project is to see how much an AI could generate given enough context, and in this project, all the "source" code is generated using the requirements and unit tests as context. This follows the Next-Level Development: Harnessing AI with AIDE approach. The main parts are: Requirements Documents in .adoc format. JUnit tests in Java. AIDE itself. AI-generated code in Java. Even the articles written about AIDE are part of the context for the AI. This article is about how to write requirements as a prompt…
If it’s worth doing by hand, it’s worth automating. Just because not everyone is (yet) a world-class developer; that doesn’t mean we can’t step closer to that expert-level space. In this post, I will introduce AIDE (Artifical Intelligence Development Environment), a powerful workflow that merges AI-driven code generation with a sharp focus on documentation-driven development. With AIDE, I tap into the best of artificial intelligence (AI) while respecting the real human insight needed for domain-specific logic. The result? An environment that streamlines repetitive coding, synchronises…
In this blog post, I’ll walk through how using LocalStack with Docker and Docker Compose helped us speed up development and testing, making the entire process more efficient and seamless. When building modern cloud-native applications on AWS, having a reliable and cost-effective approach to development and testing is essential. For this project, we utilised LocalStack, a platform that simulates AWS services locally. This enabled us to work more efficiently, speed up development, cut down on costs, and quickly test integrations without constantly interacting with the actual AWS cloud.…
Use Cases for Generative AI For the past year, almost every week the Software Engineering world is asked about Artificial Intelligence (AI). “What should Capgemini’s AI offerings be?”, “Aren’t you worried about the role of Capgemini software engineers now that AI can write code?” Specifically in these cases, the questions are around Generative AI. To put that in context, here is a recap of some terms used to describe different implementations of AI. Machine Learning A nice dictionary definition of machine learning from Oxford Languages is: “the use and development of computer systems that are…
JSON is probably the most used standard file format for storing and transmitting data on the Internet in recent times. Though it was historically derived from JavaScript, it is a programming language independent format and is now supported by almost all languages. JSON has a simple syntax specification with only four scalar data types and two composite data types. So, writing a parser for JSON is a great exercise for learning the basics of parsing. Let’s write one from scratch in Haskell.