Skip standalone test-fixture generation when embedded

[dudizimber]

build.rs runs scripts/generate_test_certificates.sh in debug builds to set up TLS certs for the crate's own integration tests. That script walks up the tree looking for a directory literally named 'valkey-ldap' and loops forever when the crate is vendored as a submodule under a different name (e.g. modules/ldap), hanging the build. The fixtures are never used when the crate is embedded into a host module, so skip them whenever the 'embed' feature is enabled.

Summary by CodeRabbit

• Bug Fixes
  • Updated debug build behavior so fixture generation and copying no longer run when the app is built with embedding enabled.
  • This helps avoid unnecessary build-time file creation and makes embedded builds behave more consistently.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: b15697e1-b61a-4dd6-bce9-0af6a7bb56e3

📥 Commits

Reviewing files that changed from the base of the PR and between 2f9e86a and 1d3009a.

📒 Files selected for processing (1)

• build.rs

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📝 Walkthrough

Walkthrough

The build script now skips debug-only fixture generation and copying when the crate is built with the embed feature. It derives an embedded flag from CARGO_FEATURE_EMBED and uses it in the debug guard.

Changes

Embed-aware build script gating

Layer / File(s)	Summary
Debug fixture gate build.rs	build.rs now derives an embedded flag from CARGO_FEATURE_EMBED and skips debug-only certificate generation and fixture copying when embedding is enabled; inline comments describe the behavior.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 I hopped through the build-script gate,
With embed on, I wait and wait.
Debug carrots stay tucked away,
While fixtures skip their little play.
Thump-thump—quiet builds today!

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: skipping standalone test-fixture generation when the crate is embedded.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch embed-ldap-config-prefix

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