Why 100% Line Coverage is a Dangerous Lie (And How We Made Python Mutation Testing Run in Seconds)

说明与用途

DeployProof 将 Python 变异测试延迟降至 2–4 秒，自动生成缺失断言，并添加七个验证门，帮助开发者在代码推送前捕获逻辑错误。

问题

High line coverage can mask logic bugs because tests may execute code without asserting correct behavior, especially when AI-generated boilerplate tests are used.

结果

DeployProof reduces mutation testing latency from minutes to seconds, automatically fixes assertion gaps, and adds seven deterministic verification gates, enabling developers to catch logic bugs before code is pushed.

工作流

• 1. Install DeployProof via pipx or pip.
• 2. Run deployproof check on the current git diff to perform mutation testing and other gates.
• 3. If mutants survive, run deployproof check --heal-tests to auto‑generate missing pytest assertions.
• 4. Optionally review synthesized tests in interactive mode with deployproof check -i.
• 5. Commit and push; DeployProof’s pre‑push hook ensures all gates pass before code reaches CI.

证据

DeployProof drops the feedback loop down to 2 to 4 seconds.

来源

DeployProof analyzes the surviving AST mutation, infers parameter types, and auto‑synthesizes a ready‑to‑run pytest test case.

来源