Acceptance checks

Acceptance checks for AI agent tasks

• A Test List That Survives an Agent's Own Edits
• How to Write Acceptance Checks an Agent Can Run Itself
• Turning a Manual QA Checklist into Agent-Runnable Checks
• What an Acceptance Check Costs in Command Time and Tokens
• Writing Acceptance Checks an Agent Can Run Itself
• A Characterization Run in CI: Cost, Time and What to Cache
• A Lint Rule as a Test for Agent Output
• A Test Coverage Budget for Agent Work: When to Stop Adding Tests
• All of Acceptance checks

Mutation testing

Mutation testing and test strength

• Assertions That Resist Weakening: A Pattern Library
• How to Spot a Test That Passes for the Wrong Reason
• Mutation Testing on a Budget: Picking the Lines to Kill
• Trimming Mutation Scope: Files, Operators and Lines
• When an Agent Writes the Mutant: Prompt and Sandbox
• A Mutation Score That Won't Mislead: Choosing the Denominator
• Assertion Density per Changed Line: Setting a Floor and Measuring
• Assertions That Survive a Mutant: A Pattern Library
• All of Mutation testing

Test fixtures

Fixtures and seed data for agent tests

• A Fixture Manifest an Agent Cannot Rewrite: Paths and Hashes
• Costing a Contract Test Suite: Stubs Versus Live Runs
• Indexing for a Retrieval Eval: What to Store So Reruns Are Cheap
• One Agent, One Database: Fixtures and Seed Data for Parallel Work
• A Manifest for Fixtures and Seed Data an Agent Cannot Rewrite
• A Separate Schema per Agent: Connection Strings and Teardown
• Fixtures or Factories: Which Survives a Parallel Agent Suite
• Parallel Migrations Without Lock Contention
• All of Test fixtures

Flaky tests

Taming flaky and unreliable agent tests

• Comparing Two Runs of the Same Test: Fields a Diff Must Show
• Flaky Tests vs. Mutation Gates: Which One to Blame on Failure
• Reading an Agent's Test Run Output for the Failures It Hid
• When a Required Check Is Flaky: Quarantine Policy for Agent Gates

Codebase analysis

Static analysis and codebase mapping

• Using AI Coding Agents on a Legacy Codebase
• A Call Graph Diff an Agent Runs Before It Edits
• A Guard Test That Fails When a Refactor Adds an Indirect Caller
• Finding Callers a Static Graph Misses: Dispatch and Reflection
• How to Map a Codebase Before an Agent Touches It
• Mapping Call Sites Before an Agent Edits a Shared Function
• A Pre-Edit Checklist for Any Function with More Than Five Callers
• Auditing an Agent-Built Map: Finding Stale and Missing Edges
• All of Codebase analysis