DEV Community

Testing

Find those bugs before your users do! 🐛

Posts

👋 Sign in for the ability to sort posts by relevant, latest, or top.
Seven Executable Gates Before a Free Model Touches Real Data

Seven Executable Gates Before a Free Model Touches Real Data

Comments
5 min read
Your fetch failed, your code wrote an empty array, and now your tests assert a lie

Your fetch failed, your code wrote an empty array, and now your tests assert a lie

Comments
6 min read
Seven Executable Gates Before a Free Model Touches Real Data

Seven Executable Gates Before a Free Model Touches Real Data

Comments
5 min read
Romance of properties

Romance of properties

1
Comments
1 min read
Your retry logic has never seen a real 429. Here is how to test it with a local fault-injecting mock

Your retry logic has never seen a real 429. Here is how to test it with a local fault-injecting mock

Comments
2 min read
Twenty Identical Runs, Then One Small Diff: Sealing Entropy Before a Messy Refactor

Twenty Identical Runs, Then One Small Diff: Sealing Entropy Before a Messy Refactor

Comments
4 min read
Your Agent Patch's Tests Never Touched the Changed Lines: A Diff-Coverage Gate

Your Agent Patch's Tests Never Touched the Changed Lines: A Diff-Coverage Gate

Comments
6 min read
Realtime Quote Watchlists: Virtual Time for Batched Delivery Tests

Realtime Quote Watchlists: Virtual Time for Batched Delivery Tests

Comments
5 min read
TypeScript Email Tests Need a Typed Event Boundary

TypeScript Email Tests Need a Typed Event Boundary

Comments 1
4 min read
48-Hour Field Notes: My Stream Ended at [DONE] and the File Was Still Half a Function

48-Hour Field Notes: My Stream Ended at [DONE] and the File Was Still Half a Function

Comments
6 min read
Is this test flaky, or is it a real bug?

Is this test flaky, or is it a real bug?

1
Comments
4 min read
Spec-driven development has a verification hole

Spec-driven development has a verification hole

Comments
10 min read
Test Selection Is a Claim: Audit Which Tests an Agent Patch Actually Ran

Test Selection Is a Claim: Audit Which Tests an Agent Patch Actually Ran

Comments
6 min read
Myth FAQ: Free Model Access Moves the Bill, It Doesn't Delete It

Myth FAQ: Free Model Access Moves the Bill, It Doesn't Delete It

Comments
4 min read
Building FlakyDetector 0.2.2: Why Test Reliability Needs Evidence, Not Just a Score

Building FlakyDetector 0.2.2: Why Test Reliability Needs Evidence, Not Just a Score

Comments 2
4 min read
👋 Sign in for the ability to sort posts by relevant, latest, or top.