Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add kevintsengtw/dotnet-testing-agent-skills --skill dotnet-testing-awesome-assertions-guidegit clone --depth 1 https://github.com/kevintsengtw/dotnet-testing-agent-skillsWrote 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/kevintsengtw/dotnet-testing-agent-skills/dotnet-testing-awesome-assertions-guide)<a href="https://agentmods.dev/skills/kevintsengtw/dotnet-testing-agent-skills/dotnet-testing-awesome-assertions-guide"><img src="https://agentmods.dev/badge/skills/kevintsengtw/dotnet-testing-agent-skills/dotnet-testing-awesome-assertions-guide.svg" alt="Measured on agentmods" 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 | $0.00191 | $0.03709 |
| Opus 5 | $0.00096 | $0.01854 |
| Sonnet 5 | $0.00038 | $0.00742 |
| Haiku 4.5 | $0.00019 | $0.00371 |
Grade A, and why
dotnet-testing-awesome-assertions-guide 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 7d 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 — 393 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AwesomeAssertions 流暢斷言指南
本技能提供使用 AwesomeAssertions 進行高品質測試斷言的完整指南，涵蓋基礎語法、進階技巧與最佳實踐。
關於 AwesomeAssertions
AwesomeAssertions 是 FluentAssertions 的社群分支版本，使用 Apache 2.0 授權，完全免費且無商業使用限制。
核心特色
- 完全免費：Apache 2.0 授權，適合商業專案使用
- 流暢語法：支援方法鏈結的自然語言風格
- 豐富斷言：涵蓋物件、集合、字串、數值、例外等各種類型
- 優秀錯誤訊息：提供詳細且易理解的失敗資訊
- 高性能：優化的實作確保測試執行效率
- 可擴展：支援自訂 Assertions 方法
與 FluentAssertions 的關係
AwesomeAssertions 是 FluentAssertions 的社群 fork，主要差異：
| 項目 | FluentAssertions | AwesomeAssertions |
|---|---|---|
| 授權 | 商業專案需付費 | Apache 2.0（完全免費） |
| 命名空間 | FluentAssertions |
AwesomeAssertions |
| API 相容性 | 原版 | 高度相容 |
| 社群支援 | 官方維護 | 社群維護 |
安裝與設定
NuGet 套件安裝
# .NET CLI
dotnet add package AwesomeAssertions
# Package Manager Console
Install-Package AwesomeAssertions
csproj 設定（推薦）
<ItemGroup>
<PackageReference Include="AwesomeAssertions" Version="9.4.0" PrivateAssets="all" />
</ItemGroup>
命名空間引用
using AwesomeAssertions;
using Xunit;
核心 Assertions 語法
所有 Assertions 皆以 .Should() 開始，搭配流暢方法鏈結。
| 類別 | 常用方法 | 說明 |
|---|---|---|
| 物件 | NotBeNull(), BeOfType<T>(), BeEquivalentTo() |
空值、類型、相等性檢查 |
| 字串 | Contain(), StartWith(), MatchRegex(), BeEquivalentTo() |
內容、模式、忽略大小寫比對 |
| 數值 | BeGreaterThan(), BeInRange(), BeApproximately() |
比較、範圍、浮點精度 |
| 數值集合 | EqualApproximately(), NotEqualApproximately() |
數值集合近似比對（9.4+） |
| 集合 | HaveCount(), Contain(), BeEquivalentTo(), AllSatisfy() |
數量、內容、順序、條件 |
| 例外 | Throw<T>(), NotThrow(), WithMessage(), WithInnerException() |
例外類型、訊息、巢狀例外 |
| 非同步 | ThrowAsync<T>(), CompleteWithinAsync() |
非同步例外與完成驗證 |
完整語法範例與程式碼請參閱 references/core-assertions-syntax.md
進階技巧：複雜物件比對
使用 BeEquivalentTo() 搭配 options 進行深度物件比較：
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 7d ago First seen · 393 lines · 191 tokens per session scan A 5263f29edb60
dotnet-testing-awesome-assertions-guide is a skill published in the GitHub repository kevintsengtw/dotnet-testing-agent-skills (28 stars, last pushed 22d ago), licensed MIT. It adds 191 tokens to every session and 3,709 once invoked, about $0.0010 per session on Opus 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 2026-08-30.
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