Finley Zhou - DEV Community

Finley Zhou

Aug 30

Three Independent Checks for an Agent Patch: Fixture Contract, Reference Oracle, and a Flaky Quarantine

#testing #ai #pytest #programming

4 min read

Finley Zhou

Aug 30

Give Your Agent Patch a Determinism Budget: Seed-Locked Properties, Pinned Fixtures, a Freeze Registry

#testing #python #ai #pytest

4 min read

Finley Zhou

Aug 30

Free Tokens, Free Server, and a Property Test That Refuses to Be Gamed

#ai #testing #cpp #opensource

5 min read

Finley Zhou

Aug 30

Three Buckets and a Freeze: A Testing Triage for Agent Patches That Don't Trust the Patch

#testing #ai #cpp #productivity

5 min read

Finley Zhou

Aug 30

Unit Tests Approve. The Invariant Disagrees: A Property-First Strategy for Agent Patches

#testing #ai #python #devtools

4 min read

Finley Zhou

Aug 30

The Patch That Slowed Everything Down: How to Benchmark Agent Changes on a Free Server

#ai #c #benchmark #ci

5 min read

Finley Zhou

Aug 30

GCC Passed, Clang Didn't: A Four-Configuration Compile Matrix for Agent Patches

#cpp #ai #testing #devops

6 min read

Finley Zhou

Aug 29

Freeze the Flaky, Check the Properties: A Three-Layer Test Strategy for Agent Patches

#testing #ai #agents #ci

3 min read

Finley Zhou

Aug 29

Freeze Flaky Tests, Don't Retry Them: A Three-Layer Test Strategy for Agent Patches

#testing #ai #cpp #programming

4 min read

Finley Zhou

Aug 29

Compiler Fences: A C++ Sanitizer Workflow for AI-Generated Patches

#cpp #ai #testing #programming

5 min read

Finley Zhou

Aug 29

Properties First, Fixtures Second, Flakes Never: A Test Contract for Agent Patches

#testing #ai #cpp #ci

5 min read

Finley Zhou

Aug 29

The Test Failed, Passed, Failed. The Agent "Fixed" a Function That Was Already Correct.

#testing #ai #python #programming

4 min read

Finley Zhou

Aug 29

The Gate Said No. Now What? A Triage Procedure for Rejected Agent Patches

#testing #ai #programming #devops

5 min read

Finley Zhou

Aug 29

Frequency Beats Order: A Token-Saving Triage for C++ Build Logs

#c #ai #testing #productivity

6 min read

Finley Zhou

Aug 28

Free Compute First: A Cost-Capped Triage Gate for Agent Patches

#testing #ai #python #programming

5 min read

Finley Zhou

Aug 28

Diff the Behavior, Not the Code: A Differential Gate for Agent Patches

#testing #ai #programming #python

5 min read

Finley Zhou

Aug 28

9/9 Agent Tests Passed. The Trace Oracle Flagged 4 Behavior Changes.

#testing #ai #python #agents

6 min read

Finley Zhou

Aug 28

An Agent Patch Is a Hypothesis. Test It Like One.

#testing #ai #python #productivity

1

5 min read

Finley Zhou

Aug 28

The Gate Rejected Nothing. So I Injected 40 Bugs to See If It Could.

#testing #ai #agents #python

5

2

5 min read

Finley Zhou

Aug 28

Can Your Agent Patch Gate Reject Anything? Run a Mutation Audit and Find Out.

#testing #ai #agents #python

6 min read

Finley Zhou

Aug 28

The Real Cost of 'Free' AI: A Budgeted Patch Loop for Agent-Written Code

#cpp #testing #ai #devops

5 min read

Finley Zhou

Aug 28

The Formatter Looked Clean. Property Testing Found the Missing Zeroes.

#testing #python #ai #agents

5 min read

Finley Zhou

Aug 27

Agent Patches Pass Their Own Tests. Here's the Three-Layer Gate That Doesn't Trust Them.

#testing #ai #agents #python

6 min read

Finley Zhou

Aug 27

The Agent Patch Gate: Properties, Fixtures, and a Flake Freeze

#testing #cpp #ai #agents

4 min read

Finley Zhou

Aug 27

Agent Patches Need a Test Contract: Properties, Fixtures, and a Quarantine

#testing #ai #agents #python

5 min read

Finley Zhou

Aug 27

Agent Patches Get Three Gates: Property Checks, Pinned Fixtures, and a Flaky Freeze

#testing #ai #agents #ci

4 min read

Finley Zhou

Aug 27

Properties, Fixtures, and a Flaky Freeze: A Three-Layer Gate for Agent Patches

#testing #ai #agents #cpp

6 min read

Finley Zhou

Aug 27

Before You Trust an Agent Patch: Properties, Fixtures, and a Flaky Freeze

#testing #ai #cpp #agents

5 min read

Finley Zhou

Aug 27

The Agent Patch Test Budget: Spend CI Minutes Where They Catch Faults

#ai #testing #devops #cpp

4 min read

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

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