Finley Zhou - DEV Community

Finley Zhou

Aug 27

The Flaky Freeze Needs an Expiry Date: A Gate Runner for Agent Patches

#testing #cpp #ai #python

6 min read

Finley Zhou

Aug 26

Mutate the Agent's Patch Before You Trust Its Tests

#testing #cpp #ai #programming

5 min read

Finley Zhou

Aug 26

Mutation Testing as a Merge Gate for Agent-Written Tests

#testing #cpp #ai #agents

5 min read

Finley Zhou

Aug 26

The Agent's Tests Passed. Mutation Testing Showed 2 of 4 Faults Survived.

#cpp #testing #ai #agents

5 min read

Finley Zhou

Aug 26

A Free Model Rewrote My Parser. Differential Testing Decided Whether I Merged It.

#cpp #testing #ai #programming

5 min read

Finley Zhou

Aug 26

Three Gates for Agent Patches: Properties, Fixtures, and a Flaky Freeze

#testing #cpp #ai #devops

6 min read

Finley Zhou

Aug 26

Case Study: The Thread Pool Passed 64/64 Tasks. ThreadSanitizer Found the Race in the Destructor

#cpp #ai #testing #concurrency

1

5 min read

Finley Zhou

Aug 25

The Free Model Wrote Tests That Passed. They Still Missed a Bug.

#c #testing #ai #coverage

4 min read

Finley Zhou

Aug 25

Case Study: A Free Model Wrote an SPSC Queue. Unit Tests Passed; the Server's TSan Run Didn't.

#cpp #testing #ai #concurrency

5 min read

Finley Zhou

Aug 25

87 Smart-Pointer Proposals From a Free Model. 31 Made It.

#cpp #ai #refactoring #testing

3 min read

Finley Zhou

Aug 25

Case Study: A Free Model Triage of 1,400 C++ Warnings — the First 12 Were Wrong

#cpp #ai #llm #devops

5 min read

Finley Zhou

Aug 24

Case Study: I Pinned 18 Prompts to a Free Model Endpoint. Two Broke Without a Code Change.

#cpp #ai #testing #llm

4 min read

Finley Zhou

Aug 24

Case Study: The C++20 Migration Compiled Clean. A 40-Line Property Test Found the Ordering Break.

#cpp #ai #testing #ci

5 min read

Finley Zhou

Aug 24

Case Study: A Free Model Wrote a C++ TODO Expiry Checker. Compilation Passed; the Fixture Didn't.

#cpp #ci #ai #testing

5 min read

Finley Zhou

Aug 24

Case Study: A Free Model Wrote the Fuzz Target. A Free Server Found the Off-by-One.

#cpp #ai #fuzzing #casestudy

5 min read

Finley Zhou

Aug 23

Case Study: A C++ Cache Proxy That Cut Free-Tier Model Calls by 73%

#cpp #ai #cache #ci

4 min read

Finley Zhou

Aug 23

Case Study: A Free Model's C++ Token Bucket Passed 18 Tests. NTP Broke It in One Second.

#cpp #ai #testing #casestudy

5 min read

Finley Zhou

Aug 23

Case Study: A C++ Build-Failure Triage Bot — Cache First, Recompile as the Gate

#cpp #ai #ci #testing

5 min read

Finley Zhou

Aug 23

Case Study: A .gitignore Validator in C++ — 47 Vectors, 3 Rounds, 2 Gaps

#cpp #git #ai #testing

5 min read

Finley Zhou

Aug 23

Case Study: A Free Model's C++ Hash Map Passed 42 Tests. The Scaling Curve Found the O(n ).

#cpp #ai #testing #performance

4 min read

Finley Zhou

Aug 22

A C++ Config Validator for a Server That May Skip Your Job

#cpp #testing #devops #ai

6 min read

Finley Zhou

Aug 22

Case Study: A Free Model's UTF-8 Validator Passed My Tests. The Spec Table Found What Both Missed.

#cpp #testing #ai #casestudy

6 min read

Finley Zhou

Aug 22

Case Study: A Gated Loop on Free Infrastructure — 3 Rounds to a Correct C++ Header Parser

#cpp #ai #testing #casestudy

6 min read

Finley Zhou

Aug 22

Review Comments Are Hypotheses: An Audit of an AI Code Review

#cpp #ai #testing #workflow

5 min read

Finley Zhou

Aug 21

A Free Model Wrote a C++ Fuzzer. My Hand-Written Parser Failed in 40 Seconds.

#cpp #testing #ai #security

5 min read

Finley Zhou

Aug 21

A Free Model's UTF-8 Validator Passed 100k Round-Trips. The Spec Corpus Failed It.

#cpp #ai #testing #casestudy

5 min read

Finley Zhou

Aug 21

Case Study: A C++ Object Pool From a Free Model — 4 Defects, 3 Rounds, 1 Human Invariant

#cpp #ai #testing #casestudy

5 min read

Finley Zhou

Aug 21

Bit 0 vs. Bit 7: What 10,000 Random Frames Taught Me About AI-Generated Bitfields

#cpp #ai #testing #embedded

5 min read

Finley Zhou

Aug 20

Case Study: A Free Model Rewrote a Config Parser. A Differential Fuzz Gate Found the Crash in 90 Seconds.

#cpp #testing #ai #security

5 min read

Finley Zhou

Aug 20

34 Green Tests, 14 Alive Mutants: A C++ Mutation Testing Case Study

#cpp #testing #ai #codequality

5 min read

Finley Zhou

Aug 19

Case Study: A Benchmark Gate Rejected a Free Model's C++ "Optimization" — and the Noise Floor Agreed

#cpp #ai #benchmark #performance

4 min read

Finley Zhou

Aug 19

Case Study: A Free Model Wrote a C++ Tree Hasher. The Reference Oracle Found Three Bugs.

#cpp #ai #testing #casestudy

4 min read

Finley Zhou

Aug 19

Case Study: A Free Model Refactored a C++ Library. An ABI Gate Rejected 11 of 12 Patches.

#cpp #ai #testing #ci

3 min read

Finley Zhou

Aug 19

A Free Model Made the Sum More Accurate. memcmp Caught the Regression.

#cpp #ai #testing #performance

4 min read

Finley Zhou

Aug 18

Case Study: ThreadSanitizer Had Final Say on a Free Model's C++ Cache

#cpp #ai #testing #programming

5 min read

Finley Zhou

Aug 18

Case Study: A Small C++ Build-Log Triage Tool and Four Merge Gates for Free Model Patches

#cpp #ai #testing #programming

4 min read

Finley Zhou

Aug 18

Runnable Examples as a C++ API Contract: A Free Model Proposes Them, a Disposable Server Rejects the Rest

#cpp #ai #testing #programming

4 min read

Finley Zhou

Aug 18

Make AI Include Cleanups Earn Their Merge: A C++ Gate Case Study

#cpp #ai #testing #devops

4 min read

Finley Zhou

Aug 17

A Free Model Endpoint Proposed a Build Cleanup. My C++ Executor Required a Dry Run Before Touching State.

#cpp #ai #programming #security

5 min read

Finley Zhou

Aug 17

The Free Model Wrote 87 C++ Fuzz Seeds. Only 6 Earned Coverage.

#cpp #fuzzing #ai #testing

4 min read

Finley Zhou

Aug 17

A Free Model Suggested a C++ Fix. The Subprocess Contract Decided Whether It Could Merge.

#cpp #ai #devops #testing

4 min read

Finley Zhou

Aug 17

A Model-Suggested C++ Fix Should Earn Its Way Through the Build Log

#cpp #ai #testing #devops

5 min read

Finley Zhou

Aug 17

Free Model Endpoints Will Normalize C++ Paths. A Canonical Manifest Vetoes the Summary.

#cpp #ai #buildsystems #devops

4 min read

Finley Zhou

Aug 17

A Free Model Called a C++ Patch Safe. A Symbol Manifest Made It Prove ABI Before Merge.

#cpp #ai #testing #devops

4 min read

Finley Zhou

Aug 16

The Crash Router Trusted a 0.97 Confidence Score. It Needed a Vote.

#cpp #ai #devops #tutorial

6 min read

Finley Zhou

Aug 16

A Free Model Endpoint Said the C++ Lock Was Hot. The Race Detector Disagreed.

#cpp #ai #testing #devops

3 min read

Finley Zhou

Aug 16

A Free Model Kept Returning Valid JSON With Shifting Types. The C++ Gate Refused the Ambiguous Cases.

#cpp #ai #testing #json

4 min read

Finley Zhou

Aug 16

A Free Model Endpoint Returned Numeric JSON That Was Valid and Wrong

#cpp #ai #json #programming

5 min read

Finley Zhou

Aug 16

He Let a Free Model Propose C++ Patches. A Three-Way Build Held the Veto.

#cpp #ai #testing #devops

5 min read

Finley Zhou

Aug 16

A Free Model Wrote a Dangerous One-Liner. A Permit Ledger Made It Earn Execution.

#cpp #ai #security #linux

3 min read

Finley Zhou

Aug 15

Sanitizer Stacks Look Identical Until You Normalize Them: A C++ Crash Triage Harness

#cpp #testing #ai #debugging

5 min read

Finley Zhou

Aug 15

A Local Disagreement Filter Stopped a Free Model Endpoint From Re-Explaining the Same C++ Warnings

#automation #cpp #software #tooling

6 min read

Finley Zhou

Aug 15

The Crash Tagger Kept Passing the JSON Contract Until It Didn't: A C++ Drift Ledger for Free Model Labels

#cpp #ai #reliability #observability

5 min read

Finley Zhou

Aug 15

A Known-Answer Canary Is the Safety Rail for Free Model Endpoints

#ai #testing #python #devops

5 min read

Finley Zhou

Aug 15

A Free Server Caught the GUI Fallback a Model Buried in a CLI

#python #testing #devops #ai

4 min read

Finley Zhou

Aug 14

A Free Model Endpoint Replied Twice, Then Went Silent. The Fix Was a C++ Replay Envelope, Not Retries

#cpp #ai #testing #reliability

4 min read

Finley Zhou

Aug 14

A Free Model Endpoint Returned 200 With an Empty Body. The Fix Was a Lease, Not a Retry.

#ai #cpp #devops #programming

1

2

5 min read

Finley Zhou

Aug 14

Free Model Explanations Are Just Another Build Input. So I Gave Them a Replay Cache.

#cpp #ai #testing #devops

5 min read

Finley Zhou

Aug 14

He Turned a Use-After-Free Into a Hypothesis Queue. A Free Server Did the Voting.

#cpp #testing #ai #devops

4 min read

Finley Zhou

Aug 14

A Free Model's Review Had No Evidence. The Maintainer Added a Claim Ledger.

#ai #codereview #testing #python

4 min read

Writing Debut