Tech Articles
Curated developer articles, tutorials, and guides – auto-updated hourly
xbill4d ago • 9 min read
I built a security scanner that checks if you are a dog
A live-video scanner that barks when it sees a dog, built by a self-paced AI loop over one weekend. ...
#devchallenge#weekendchallenge#ai#testing
13 2
Harsh 6d ago • 6 min read
The Most Dangerous AI-Generated Code Is the Code That Passes All Tests
The code compiled The tests passed The PR was green So I merged it. Days later I was looking at...
#ai#programming#testing#softwaredevelopment
25 13
Don Johnson3d ago • 7 min read
Shipping Assumptions: A Reliability Stack for AI-Generated Code
AI can generate implementation faster than we can understand the resulting system. Older modeling di...
#ai#architecture#testing#programming
15 6
Matty Stratton2d ago • 9 min read
Every Number I Didn't Measure Was Wrong
Five claims I wrote into a schema, a README and a set of docs without ever checking them against the...
#programming#testing#postgres#devjournal
2 0
Sukhpinder Singh2d ago • 4 min read
xUnit 4 ParallelMode.All: Protect Shared State from Test Races
xUnit 4.0.0 makes full test-case parallelization an explicit option. That is useful, but xUnit 4...
#dotnet#csharp#testing#programming
5 1
Self-Correcting Systems3d ago • 15 min read
The Suite Was Green. Four Binding Controls Hadn't Established Their Claims.
Part three of: OpenAI Says Verified Defenders Get More Access. I'm Going to Test That. On August 5...
#python#testing#opensource#security
15 8
Igor Potapenko11h ago • 5 min read
Your idempotency test probably cannot fail
My test for "do not announce the same payment twice" passed. Production sent two identical messages ...
#testing#webdev#postgres#node
6 1
Erik Hill5d ago • 2 min read
Your eval suite passes. I built the tool that checks whether it checks anything.
Three weeks ago I asked an uncomfortable question about my own LLM regression suite: if a model...
#testing#llm#opensource#showdev
2 0
John Green23h ago • 5 min read
I Gave My LLM an Exam. The Exam Author Lost 5 Times.
I didn't trust AI, so I built an exam for it. The person who failed that exam the most was me. ...
#ai#llm#testing#programming
2 1
Fibula1d ago • 6 min read
The Green Test That Lied
Episode 09's visual-prompt file passed every automated check I had. Green across the board. And I wa...
#testing#ci#python#opensource
1 0
Naufal Hafizh4d ago • 5 min read
I shipped a lock. Then I had to prove it could fail.
This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. ## The bug that.....
#bugsmash#testing#node#devchallenge
1 0
conchaestradamiguelangel-droid6d ago • 2 min read
We found a bug that let our test suite write to production. Here's what we did about it.
Five days ago we opened Ekurhive — our trust network for AI agents — to outside nodes. This week,...
#ai#postgres#testing#security
0 2
Sukhpinder Singh6h ago • 4 min read
MCP C# SDK Hybrid Sessions: Serve Old and New Clients on One Endpoint
Use MCP C# SDK hybrid sessions to keep 2025-11-25 clients stateful while serving 2026-07-28 clients ...
#mcp#dotnet#csharp#testing
5 0
Sukhpinder Singh2d ago • 4 min read
ASP.NET Core 10 Authentication Metrics: Distinguish No Result from Failure
When every unauthorized request becomes the same dashboard line, diagnosis turns into guessing....
#dotnet#csharp#monitoring#testing
5 0
Sukhpinder Singh7h ago • 4 min read
MCP x-mcp-header Validation: Keep Bad Tool Schemas Out of tools/list
MCP x-mcp-header validation is easy to miss because the annotation looks like ordinary JSON Schema.....
#ai#mcp#csharp#testing
4 1
abigail armijo4d ago • 7 min read
Solution to Challenge 3 - Visual Testing with API Mocking
Challenge #3 is done — here's my solution to Challenge 3 - Visual Testing with API Mocking ...
#testing#playwright#automation#apitesting
1 0
zxpmail6d ago • 15 min read
The Third Predicate: Argument-Space Verification, Tested
Mike Czerwinski argued the scope-matches-claim predicate lives in argument-space, not word-space — t...
#ai#llm#agents#testing
8 24
Jordan Huang6d ago • 6 min read
A New Cheap Model Dropped. Here's the 2-Hour Canary Test I Run Before Touching It
Every few weeks a new coding model launches with a price tag that makes the incumbent look...
#ai#llm#testing#productivity
1 1
Maya Andersson1d ago • 8 min read
A judge that agrees with your humans 92 percent of the time can be at 60 percent where the gate actually decides
TL;DR: Judge-human agreement is almost always reported as one number over a whole validation set....
#llm#statistics#testing#datascience
2 1
Susheem Koul2d ago • 9 min read
From Validating Code to Evaluating Behavior: Rethinking Testing for AI Agents
Traditional software testing assumes that system behavior is governed by deterministic code paths an...
#ai#testing#agents#software
6 1
Self-Correcting Systems4d ago • 3 min read
A Breaker Can Be Independent. The Machine Still Wasn't.
A maker cannot clear their own work. A maker's BLOCK is admissible because it costs them something. ...
#python#testing#opensource#security
16 11
Martin Hicks6d ago • 6 min read
What a write to an indexed DynamoDB table costs
What a write to a DynamoDB table carrying GSIs and LSIs actually costs, measured against real Dynamo...
#dynamodb#aws#performance#testing
0 0
Q001d ago • 5 min read
A verifier should add evidence, not rewrite history
A verifier should add evidence, not rewrite history I spent the last few weeks closing a...
#ai#testing#architecture#opensource
1 0
Cleiton Augusto Correa Bezerra2d ago • 4 min read
The test asserted exactly what could not fail
Over the last month I found correctness bugs in three different quantum software projects. All three...
#testing#rust#quantum#opensource
1 0