Add a New Test to Http11Probe

The user wants to add a new test. Gather the following from them (or from context):

1. •What RFC violation or behavior the test checks
2. •Which category: Compliance, Smuggling, MalformedInput, or Normalization
3. •The raw HTTP request to send (or enough detail to construct it)
4. •Expected outcome: what status code / behavior means pass, warn, or fail
5. •RFC reference (if applicable): section number and the exact quote with the MUST/SHOULD/MAY keyword

Then perform all 6 steps below, in order.

Step 1 — Add the test case to the suite file

Choose the correct file:

Read the file first to understand existing patterns and find the right insertion point.

Append a yield return new TestCase { ... }; inside GetTestCases():

yield return new TestCase
{
    Id = "PREFIX-NAME",
    Description = "What this test checks",
    Category = TestCategory.XXX,
    RfcReference = "RFC 9112 §X.X",          // Use § not "Section". Omit if N/A.
    RfcLevel = RfcLevel.Must,                 // Must|Should|May|OughtTo|NotApplicable
    Scored = true,                            // false for MAY/informational tests
    PayloadFactory = ctx => MakeRequest(
        $"GET / HTTP/1.1\r\nHost: {ctx.HostHeader}\r\n\r\n"
    ),
    Expected = new ExpectedBehavior
    {
        ExpectedStatus = StatusCodeRange.Exact(400),
    },
};

ID prefix conventions: COMP-, SMUG-, MAL-, NORM-, or RFC9112-X.X- / RFC9110-X.X-

Validation rules:

• •Exact(400) for MUST-400 requirements — NEVER add AllowConnectionClose = true for these
• •AllowConnectionClose = true only when connection close is a valid alternative to a status code
• •Use CustomValidator for pass/warn/fail logic — always check response BEFORE connection state:
  csharp

  CustomValidator = (response, state) =>
  {
      if (response is not null)
          return response.StatusCode == 400 ? TestVerdict.Pass : TestVerdict.Fail;
      if (state is ConnectionState.ClosedByServer or ConnectionState.TimedOut)
          return TestVerdict.Pass;
      return TestVerdict.Fail;
  }
  

• •RfcLevel must match the RFC 2119 keyword. Default is Must — only set explicitly for non-Must.
• •Scored = false only for MAY-level or purely informational tests
• •Always use ctx.HostHeader in payloads, never hardcoded hosts

Available helpers:

• •StatusCodeRange.Exact(int), .Range(int,int), .Range2xx, .Range4xx, .Range4xxOr5xx
• •TestVerdict.Pass, .Fail, .Warn, .Skip, .Error
• •ConnectionState.Open, .ClosedByServer, .TimedOut, .Error

Step 2 — Add docs URL mapping (if needed)

File: src/Http11Probe.Cli/Reporting/DocsUrlMap.cs

Only needed for COMP-* and RFC* prefixed tests. These prefixes are auto-mapped:

• •SMUG-XYZ → smuggling/xyz
• •MAL-XYZ → malformed-input/xyz
• •NORM-XYZ → normalization/xyz

For compliance tests, add to ComplianceSlugs:

["COMP-EXAMPLE"] = "headers/example",

Step 3 — Create the documentation page

File: docs/content/docs/{category-slug}/{test-slug}.md

Category slug mapping: line-endings, request-line, headers, host-header, content-length, body, upgrade, smuggling, malformed-input, normalization

Use this template:

---
title: "TEST NAME"
description: "Test documentation"
weight: 1
---

| | |
|---|---|
| **Test ID** | `PREFIX-NAME` |
| **Category** | Category |
| **RFC** | [RFC 9112 §X.X](https://www.rfc-editor.org/rfc/rfc9112#section-X.X) |
| **Requirement** | MUST |
| **Expected** | `400` or close |

## What it sends

Description of the non-conforming request.

\```http
GET / HTTP/1.1\r\n
Host: localhost:8080\r\n
\r\n
\```

## What the RFC says

> "Exact quote from the RFC." -- RFC 9112 Section X.X

Explanation.

## Why it matters

Security and compatibility implications.

## Sources

- [RFC 9112 §X.X](https://www.rfc-editor.org/rfc/rfc9112#section-X.X)

Step 4 — Add a card to the category index

File: docs/content/docs/{category-slug}/_index.md

Add inside the {{</* cards */>}} block. Scored tests before unscored.

{{</* card link="test-slug" title="TEST NAME" subtitle="Short description." */>}}

Step 5 — Add test ID to the website table group

File: docs/content/{compliance,smuggling,malformed-input,normalization}/_index.md

Find the GROUPS array in the <script> block and add the new test ID to the appropriate sub-group's testIds array.

For example, in docs/content/compliance/_index.md:

{ key: 'request-parsing', label: 'Request Parsing', testIds: [
    'RFC9112-2.2-BARE-LF-REQUEST-LINE', ..., 'NEW-TEST-ID'
]},

This controls which table group the test appears in on the results page.

Step 6 — Add a row to the RFC Requirement Dashboard

File: docs/content/docs/rfc-requirement-dashboard.md

1. •Add a row to the correct table (MUST/SHOULD/MAY/Unscored)
2. •Update all counts: summary table, total, suite breakdown, RFC section cross-reference

Verification

After all steps, run:

dotnet build Http11Probe.slnx -c Release

Must compile without errors. Then confirm the test appears in the output of:

dotnet run --project src/Http11Probe.Cli -- --host localhost --port 8080 --test PREFIX-NAME