testingby managedcode

NUnit Testing

managedcode/nunit

Source managedcode/dotnet-skills ↗License MIT

Write, run, or repair .NET tests that use NUnit.

SkillScore100Maintained

Automatic

QA & Test Engineering pack

Last verified 8/19/2026

What it changes

Passed 22 of 22 test cases with the skill, and 20 of 22 without it.

Without skill91%

With skill100%

Checks it passed that the model alone missed

Uses constraint model Is.All.GreaterThan
Uses TestCase attribute to supply test inputs

2 fixed20 passed either way0 still failing0 broke

Pass-rate lift: +9 pp
Tokens: +165%
Agent turns: 0%
Response time: -28%

Model gemini-3.6-flashMeasured 8/19/2026v122 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/managedcode-nunit/SKILL.md https://app.decimal.ai/s/managedcode-nunit/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add managedcode-nunit, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/managedcode-nunit/ and pins it in .decimal/skills.lock

decimalai skills add managedcode-nunit

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/managedcode-nunit/SKILL.md https://app.decimal.ai/s/managedcode-nunit/SKILL.md

Raw file: /s/managedcode-nunit/SKILL.md ↗ · machine-readable summary at /s/managedcode-nunit.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

Write an NUnit assertion checking that a list of numbers contains exactly 5 elements, all elements are greater than 0, and the list is sorted.

What was checked, without and with the skill
Checked	Without skill	With skill
Uses constraint model Has.Count.EqualTo	Passed	Passed
Uses constraint model Is.All.GreaterThan	Missed	Passed
Uses constraint model Is.Ordered	Passed	Passed

case-10 · gemini-3.6-flash · 8/19/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md363 lines3 files

NUnit Testing

Trigger On

writing or reviewing NUnit tests
using [Test], [TestCase], [TestFixture], [SetUp], [TearDown] attributes
configuring NUnit3TestAdapter or NUnit.Analyzers
migrating between NUnit versions
integrating NUnit with CI pipelines

Documentation

Workflow

Detect whether the project uses NUnit 3.x or 4.x and which runner path is active: VSTest, Microsoft.Testing.Platform, IDE runner, or CI wrapper.
Keep test fixtures small, prefer focused assertions with Assert.That, and use TestCase or TestCaseSource only when parameterization improves signal.
Add NUnit3TestAdapter, Microsoft.NET.Test.Sdk, and NUnit.Analyzers when CLI discovery or analyzer coverage is missing.
Validate with the repo's real test command before changing assertion style or lifecycle hooks.

References

patterns.md — Test patterns, assertions, parameterized tests, lifecycle
anti-patterns.md — Common NUnit mistakes and fixes

Package Selection

Package	Purpose
`NUnit`	Core testing framework
`NUnit3TestAdapter`	VSTest adapter for `dotnet test`
`NUnit.Analyzers`	Roslyn analyzers for NUnit best practices
`Microsoft.NET.Test.Sdk`	Required for test discovery

Project Setup

Track record

Benchmark

22 / 22

test cases passed, vs 20 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

managedcode / dotnet-skills

catalog/Testing/NUnit/skills/nunit/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 2 files

More skills from the same source and nearby in the registry, with their headline benchmark lift.

See it in action

What's inside

NUnit Testing

Trigger On

Documentation

Workflow

References

Package Selection

Project Setup

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills

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See it in action

What's inside

NUnit Testing

Trigger On

Documentation

Workflow

References

Package Selection

Project Setup

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills