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-advanced-xunit-upgrade-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-advanced-xunit-upgrade-guide)<a href="https://agentmods.dev/skills/kevintsengtw/dotnet-testing-agent-skills/dotnet-testing-advanced-xunit-upgrade-guide"><img src="https://agentmods.dev/badge/skills/kevintsengtw/dotnet-testing-agent-skills/dotnet-testing-advanced-xunit-upgrade-guide/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/kevintsengtw/dotnet-testing-agent-skills/dotnet-testing-advanced-xunit-upgrade-guide"><img src="https://agentmods.dev/badge/skills/kevintsengtw/dotnet-testing-agent-skills/dotnet-testing-advanced-xunit-upgrade-guide.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00209 | $0.02110 |
| Opus 5 | $0.00105 | $0.01055 |
| Sonnet 5 | $0.00042 | $0.00422 |
| Haiku 4.5 | $0.00021 | $0.00211 |
Grade A, and why
dotnet-testing-advanced-xunit-upgrade-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 9d 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 — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.
xUnit 升級指南：從 2.9.x 到 3.x
核心概念
套件命名變革
xUnit v3 採用全新的套件命名策略：
| v1~v2 套件名稱 | v3 套件名稱 | 說明 |
|---|---|---|
xunit |
xunit.v3 |
主要測試框架 |
xunit.assert |
xunit.v3.assert |
斷言函式庫 |
xunit.core |
xunit.v3.core |
核心元件 |
xunit.abstractions |
(移除) | 不再需要 |
xunit.runner.visualstudio |
xunit.runner.visualstudio (3.x.y) |
測試執行器 |
重要：使用 xunit.v3 套件名稱，不是 xunit。
最低運行時需求
- .NET Framework 4.7.2+ 或 .NET 8.0+ (推薦)
- 不支援：.NET Core 3.1、.NET 5/6/7
破壞性變更
涵蓋 OutputType 改為 Exe、async void 不再支援、IAsyncLifetime 繼承 IAsyncDisposable、SkippableFact 移除、僅支援 SDK-style 專案、自訂 DataAttribute 簽名變更等六項破壞性變更，每項皆附修正前後的程式碼對照。
完整破壞性變更清單與程式碼範例請參考 references/breaking-changes.md
升級步驟
五步驟 SOP：建立升級分支 → 更新專案檔案（套件、OutputType）→ 修正 async void → 更新 using → 編譯與測試。另含 .NET 10 SDK MTP 模式遷移指南（global.json 設定、CLI 用法變更、VSTest 遷移步驟）。
完整升級步驟與 .NET 10 MTP 模式指南請參考 references/upgrade-steps.md
xUnit 3.x 新功能
涵蓋 Assert.Skip / SkipUnless / SkipWhen 動態跳過、Explicit Tests、[Test] 屬性、MatrixTheoryData 矩陣測試、Assembly Fixtures、Test Pipeline Startup、多格式測試報告等新功能，每項皆附完整程式碼範例。
完整新功能範例請參考 references/new-features.md
Testcontainers.XunitV3 整合套件
Testcontainers 官方推出 Testcontainers.XunitV3（4.9.0），專為 xUnit v3 設計的整合套件，自動管理容器的建立與銷毀，取代手動實作 IAsyncLifetime 的方式。
<PackageReference Include="Testcontainers.XunitV3" Version="4.9.0" />
若專案同時使用 Testcontainers 與 xUnit v3，建議採用此套件簡化容器生命週期管理。
xunit.runner.json 設定
{
"$schema": "https://xunit.net/schema/v3/xunit.runner.schema.json",
"parallelAlgorithm": "conservative",
"maxParallelThreads": 4,
"diagnosticMessages": true,
"internalDiagnosticMessages": false,
"methodDisplay": "classAndMethod",
"preEnumerateTheories": true,
"stopOnFail": false
}
What ships with it
8 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.
- references/breaking-changes.md 2.1 KB
- references/new-features.md 3.5 KB
- references/upgrade-steps.md 3.8 KB
- templates/code-migration-examples.cs 7.3 KB
- templates/new-features-examples.cs 10 KB
- templates/upgrade-checklist.md 4.5 KB
- templates/xunit-v3-project.csproj 1.7 KB
- templates/xunit.runner.json 537 B
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.
- 9d ago First seen · 181 lines · 209 tokens per session scan A c27ff07359fc
dotnet-testing-advanced-xunit-upgrade-guide is a skill published in the GitHub repository kevintsengtw/dotnet-testing-agent-skills (28 stars, last pushed 24d ago), licensed MIT. It adds 209 tokens to every session and 2,110 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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