Add overview of E2E tests

[leynos]

Summary

• document that tests/e2e.rs hosts end-to-end tests
• explain how the MITM proxy controls GitHub requests

Testing

• make fmt
• make markdownlint

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https://chatgpt.com/codex/tasks/task_e_6888f74b1c688322915cbd542d3534e2

Summary by Sourcery

Document the structure and purpose of the end-to-end tests in tests/e2e.rs and explain how the MITM proxy intercepts GitHub requests

Documentation:

• Add overview of tests/e2e.rs file to describe end-to-end test flow
• Explain how the MITM proxy controls and mocks GitHub API requests

Tests:

• Enhance the E2E test file with descriptive comments

[sourcery-ai]

Reviewer's Guide

This PR enriches the tests/e2e.rs file with a top-level overview of the end-to-end test harness and adds detailed explanation of how the MITM proxy controls GitHub requests.

File-Level Changes

Change	Details	Files
Added a high-level overview of the E2E test suite	Inserted module-level doc comments summarizing the purpose and flow of end-to-end tests Outlined key test entry points and the sequence of test actions	tests/e2e.rs
Documented MITM proxy integration for GitHub requests	Explained how the MITM proxy intercepts and manipulates outbound GitHub calls Described proxy configuration steps and control logic within the test harness	tests/e2e.rs

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[coderabbitai]

Summary by CodeRabbit

• Documentation
  • Added detailed documentation explaining the setup and mechanism of end-to-end tests, including the use of a proxy and canned responses for deterministic testing. No functional changes were made.

Walkthrough

Add a comprehensive module-level documentation comment to the tests/e2e.rs file. The comment describes the purpose and mechanics of the end-to-end tests, clarifying the use of a Man-in-the-Middle proxy and canned responses for deterministic testing. No functional code or test logic is altered.

Changes

Cohort / File(s)	Change Summary
E2E Test Documentation tests/e2e.rs	Add a module-level documentation comment detailing the e2e test approach, proxy usage, and fixtures.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• Add e2e test harness #36: Introduces the e2e test harness and related infrastructure, which is now documented by the added comment in this PR.

Poem

A comment appears, clear as day,
Explaining how tests keep bugs at bay.
With proxies and fixtures, the tale is told,
Of hermetic checks both brave and bold.
No code was changed, just wisdom shared—
Now future readers are well prepared!

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: ASSERTIVE
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 965bd31 and c223208.

📒 Files selected for processing (1)

• tests/e2e.rs (1 hunks)

🧰 Additional context used

📓 Path-based instructions (1)

**/*.rs

📄 CodeRabbit Inference Engine (AGENTS.md)

**/*.rs: Every module must begin with a module level (//!) comment explaining the module's purpose and utility.
Document public APIs using Rustdoc comments (///) so documentation can be generated with cargo doc.
Place function attributes after doc comments.
Do not use return in single-line functions.
Use predicate functions for conditional criteria with more than two branches.
Prefer immutable data and avoid unnecessary mut bindings.
Handle errors with the Result type instead of panicking where feasible.
Prefer semantic error enums: Derive std::error::Error (via the thiserror crate) for any condition the caller might inspect, retry, or map to an HTTP status.
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Prefer .expect() over .unwrap().
Use concat!() to combine long string literals rather than escaping newlines with a backslash.

Files:

• tests/e2e.rs

---

⚙️ CodeRabbit Configuration File

**/*.rs: * Seek to keep the cyclomatic complexity of functions no more than 12.

• Adhere to single responsibility and CQRS

• Place function attributes after doc comments.

• Do not use return in single-line functions.

• Move conditionals with >2 branches into a predicate function.

• Avoid unsafe unless absolutely necessary.

• Every module must begin with a //! doc comment that explains the module's purpose and utility.

• Comments and docs must follow en-GB-oxendict (-ize / -our) spelling and grammar

• Lints must not be silenced except as a last resort.

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  • No lint groups, no blanket or file-wide suppression.
  • Include FIXME: with link if a fix is expected.

• Use rstest fixtures for shared setup and to avoid repetition between tests.

• Replace duplicated tests with #[rstest(...)] parameterised cases.

• Prefer mockall for mocks/stubs.

• Prefer .expect() over .unwrap()

• Ensure that any API or behavioural changes are reflected in the documentation in docs/

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Files:

• tests/e2e.rs

🔇 Additional comments (1)

tests/e2e.rs (1)

1-5: Streamline the first paragraph into a single sentence.

Maintain sentence flow inside the doc comment. Join the hard line-break between lines 2 and 3 so rustdoc renders it as one continuous sentence.

-//! Each test spawns a [`third-wheel`](https://crates.io/crates/third-wheel)
-//! Man-in-the-Middle proxy that intercepts outbound GitHub requests. This
+//! Each test spawns a [`third-wheel`](https://crates.io/crates/third-wheel) \
+//! Man-in-the-Middle proxy that intercepts outbound GitHub requests. This

Likely an incorrect or invalid review comment.

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[sourcery-ai]

Hey @leynos - I've reviewed your changes and they look great!

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