AI UT Code Review
Overview
Review AI-generated unit tests for effectiveness, coverage, assertions, negative cases, determinism, and maintainability. Output a 0-10 score, a risk level, and a must-fix checklist. Overall line coverage must be >= 80%; otherwise risk is at least High.
When to Use
- AI-generated UT/test code review or quality evaluation
- Need scoring, risk level, or must-fix checklist
- Questions about coverage or assertion validity
Workflow
- Confirm tests target the intended business code and key paths.
- Check overall line coverage (>= 80% required).
- Inspect assertions for behavioral validity; flag missing/ineffective assertions.
- Verify negative/edge cases and determinism (no env/time dependency).
- Score by rubric, assign risk, list must-fix items with evidence.
Scoring (0-10)
Each dimension 0-2 points. Sum = total score.
| Dimension | 0 | 1 | 2 |
|---|---|---|---|
| Coverage | < 80% | 80%+ but shallow | 80%+ and meaningful |
| Assertion Quality | No/invalid assertions | Some weak assertions | Behavior-anchored assertions |
| Negative & Edge | Missing | Partial | Comprehensive |
| Data & Isolation | Flaky/env-dependent | Mixed | Deterministic, isolated |
| Maintainability | Hard to read/modify | Mixed quality | Clear structure & naming |
Risk Levels
- Blocker: Coverage < 80% AND key paths untested, or tests have no meaningful assertions
- High: Coverage < 80% OR assertions largely ineffective
- Medium: Coverage OK but weak edge cases or fragile design
- Low: Minor improvements
Must-Fix Checklist
- Overall line coverage >= 80%
- Each test has at least one behavior-relevant assertion
- Negative/exception cases exist for core logic
- Tests are deterministic and repeatable
AI-Generated Test Pitfalls (Check Explicitly)
- No assertions or assertions unrelated to behavior (e.g., only not-null)
- Over-mocking hides real behavior
- Only happy-path coverage
- Tests depend on time/network/env
- Missing verification of side effects
Output Format (Required, Semi-fixed)
Score: x/10 — Coverage x, Assertion Quality x, Negative & Edge x, Data & Isolation x, Maintainability xRisk: Low/Medium/High/Blocker — 简述原因（1 行）Must-fix:
- [动作 + 证据] - [动作 + 证据]
Key Evidence:
- 引用具体测试用例名或覆盖率报告摘要（1-2 条）
Notes:
- 最小修复建议或替代方案（1-2 行）
Rules:
- 覆盖率 < 80% 风险至少 High，并必须列入
Must-fix - 无断言/无效断言直接提升风险级别，必须列入
Must-fix - 至少 2 条证据；证据不足需说明并降分
Common Mistakes
- 仅报告覆盖率，不评价断言有效性
- 把日志输出当成断言
- 忽略失败路径/异常路径
Example (Concise)
Score: 5/10 (Coverage 1, Assertion 0, Negative 1, Data 2, Maintainability 1) Risk: High Must-fix:
- Tests for
parseConfig()contain no behavior assertions (only logs) - No negative cases for malformed input Key Evidence:
parseConfig()tests only assert no crash- Coverage report shows 62% lines Notes:
- Add assertions on outputs and side effects; add invalid input tests.