Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/echoVic/boss-skillnpx agentmods add skills/echovic/boss-skill/unit-testingWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/echovic/boss-skill/unit-testing)<a href="https://agentmods.dev/skills/echovic/boss-skill/unit-testing"><img src="https://agentmods.dev/badge/skills/echovic/boss-skill/unit-testing/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/echovic/boss-skill/unit-testing"><img src="https://agentmods.dev/badge/skills/echovic/boss-skill/unit-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00050 | $0.05326 |
| Opus 5.5 | $0.00020 | $0.02130 |
| Sonnet 5.5 | $0.00010 | $0.01065 |
| Haiku 4.5 | $0.00005 | $0.00533 |
Grade A, and why
qa/unit-testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 714 lines — stays where its author put it; the contents beside it link to each section on GitHub.
单元测试方法论
单元测试的定义与原则
单元测试验证最小可测试单元（函数、方法、类、组件）的行为，隔离外部依赖。
核心原则
| 原则 | 说明 |
|---|---|
| 隔离 | 一个测试只验证一个行为，不依赖其他测试或外部系统 |
| 快速 | 毫秒级执行，全部单元测试应在秒级完成 |
| 确定 | 相同输入多次运行结果一致，不依赖时间/网络/随机数 |
| 可读 | 测试代码即文档，命名清晰表达意图 |
| 独立 | 测试顺序不影响结果，可任意顺序执行 |
什么该做单元测试
| 应该测 | 不应该测 |
|---|---|
| 纯函数 / 工具函数 | 框架内部行为（React 渲染机制） |
| Service 层业务逻辑 | 第三方库本身 |
| 组件渲染与交互（前端） | 配置文件 / 常量 |
| Hook 状态逻辑 | 简单的 getter/setter |
| 校验 / 转换 / 格式化逻辑 | 数据库查询（属于集成测试） |
| 状态机 / 状态转换 | 网络请求（属于集成测试） |
AAA 模式（Arrange-Act-Assert）
每个单元测试遵循三段式结构：
it('applies 10% discount when total > 100', () => {
// Arrange — 准备测试数据和环境
const items = [{ price: 60, quantity: 2 }]; // total = 120
const discount = 0.1;
// Act — 执行被测逻辑
const result = calculateTotal(items, discount);
// Assert — 验证结果
expect(result).toBe(108); // 120 * 0.9
});
命名规范：[期望行为] when [条件] 或 [动作] [结果]
// ✅ 好
it('returns error when email is invalid');
it('calculates total with discount applied');
// ❌ 差
it('should work');
it('test1');
Test Doubles（测试替身）
根据用途选择不同的替身类型：
| 类型 | 用途 | 示例 |
|---|---|---|
| Dummy | 占位，不被调用 | 传一个空对象满足参数签名 |
| Stub | 提供预设返回值 | repo.findById.mockResolvedValue(user) |
| Spy | 记录调用信息 | expect(fn).toHaveBeenCalledWith(arg) |
| Mock | Stub + Spy，验证交互 | mock.calledWith(...) |
| Fake | 简化的真实实现 | 内存数据库替代真实 DB |
何时使用哪种
// Stub：被测代码需要依赖返回值，但不关心调用细节
jest.mock('../repo', () => ({
findById: jest.fn().mockResolvedValue({ id: '1', name: 'Alice' }),
}));
// Spy：需要验证依赖是否被正确调用
const emailSpy = jest.spyOn(emailService, 'send');
await userService.register(user);
expect(emailSpy).toHaveBeenCalledWith(user.email, expect.any(String));
// Fake：需要一个可用但简化的实现
class FakeCache implements Cache {
private store = new Map<string, string>();
async get(k: string) {
return this.store.get(k) ?? null;
}
async set(k: string, v: string) {
this.store.set(k, v);
}
}
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 714 lines · 50 tokens per session scan A e065385b074b
qa/unit-testing is a skill published in the GitHub repository echoVic/boss-skill (544 stars, last pushed yesterday), licensed MIT. It adds 50 tokens to every session and 5,326 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-28.
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