Topic
TESTING
All blog posts, tools, and guides about Testing from Developers Digest.
10 resources - 5 posts, 4 tools, 1 guide
Blog Posts
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How to Evaluate AI Agents in Practice: Trajectories, Tool Calls and Judges
Evaluate AI agents in layers: deterministic tool checks, trajectory match, then an LLM judge. Working code for Pydantic Evals, Mastra and more.
13 min read
Agent Harness Lessons From a 500B-Token Decompile: Give Agents a PASS/FAIL Oracle
Agent harness lessons from a 500B+ token decompile: a byte-matching PASS/FAIL oracle beat the reviewer agent. How agents cheated it and what to copy.
7 min read
AgentChaos: Fault Injection Shows Agent Robustness Is a Systems Problem, Not a Model Problem
AgentChaos injects server errors, truncated responses and corrupted tool calls into live agents. Pass@1 drops up to 50 points: robustness is a systems problem.
6 min read
AI Test Generation Tools Compared 2026: Which One Actually Catches Bugs
AI test generation tools compared for coding agents: what they generate, where they fit in your workflow, and how to avoid tests that encode the bug.
12 min read
Dan Luu's Agentic Coding Notes Point to the Real Bottleneck
Dan Luu's agentic coding notes argue that coding agents compound only when the test, review, and task-selection loops are stronger than the code generator.
8 min read
Related Tools
All tools →MCP Inspector
Visual testing tool for Model Context Protocol servers. Like Postman for MCP - call tools, browse resources, and view real-time logs in a browser UI. Zero install via npx.
MCP ToolsPlaywright
Modern browser automation from Microsoft. Auto-wait, role-based selectors, cross-browser, fast in CI.
InfrastructureVitest
Vite-native test runner. Jest-compatible API, instant HMR for tests, native ESM and TypeScript, and built-in coverage. Default for new Vite and Next.js projects.
InfrastructureJest
The long-standing JavaScript test framework, now stewarded by the OpenJS Foundation. Snapshots, mocks, parallelism, and the broadest plugin ecosystem in the JS testing world.
InfrastructureKeep exploring
More on Testing
- - MCP Inspector - recommended Testing tool from the Developers Digest directory
- - Glossary - dive deeper across the Developers Digest knowledge base
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