test: isolate CLI config override tests

[willkill07]

Overview

Isolates CLI config override unit tests from developer-level NeMo Flow configuration discovered through the normal user config path.

• I confirm this contribution is my own work, or I have the right to submit it under this project's license.
• I searched existing issues and open pull requests, and this does not duplicate existing work.

Details

• Adds a temp-scoped explicit config path helper for config tests that require no implicit user or project config discovery.
• Updates the affected override tests to use that explicit path instead of relying on ambient process configuration.

Where should the reviewer start?

Start with crates/cli/tests/coverage/config_tests.rs, especially the tests around CLI plugin config overrides.

Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)

• Relates to: none

Summary by CodeRabbit

• Tests
  • Enhanced test infrastructure for configuration resolution by improving test isolation and setup processes.

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• crates/cli/tests/coverage/config_tests.rs

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Files:

• crates/cli/tests/coverage/config_tests.rs

**/*.{rs,go,js,ts,tsx}

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• crates/cli/tests/coverage/config_tests.rs

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• crates/cli/tests/coverage/config_tests.rs

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• crates/cli/tests/coverage/config_tests.rs

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• crates/cli/tests/coverage/config_tests.rs

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Files:

• crates/cli/tests/coverage/config_tests.rs

{crates/**/tests/**,python/tests/**,go/nemo_flow/**/*_test.go}

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{crates/**/tests/**,python/tests/**,go/nemo_flow/**/*_test.go}: Tests should cover the behavior promised by the changed API surface, including error paths and cross-request isolation where relevant.
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Files:

• crates/cli/tests/coverage/config_tests.rs

🔇 Additional comments (1)

crates/cli/tests/coverage/config_tests.rs (1)

19-21: LGTM!

Also applies to: 614-617, 642-645, 665-669

---

Walkthrough

A new private test helper isolated_config_path is introduced to return a config.toml path within a temporary directory. Three existing configuration-resolution tests are updated to use this helper by creating isolated TempDir instances and setting their config paths accordingly.

Changes

Test Configuration Isolation

Layer / File(s)	Summary
Config isolation helper and test updates crates/cli/tests/coverage/config_tests.rs	New isolated_config_path helper returns a config path within a TempDir. Three tests (run_plugin_config_overrides_inherited_top_level_plugin_config, server_resolution_applies_all_server_overrides, run_resolution_applies_all_run_overrides) are updated to use this helper for per-test isolated configuration paths.

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🎯 2 (Simple) | ⏱️ ~5 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 66.67% 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
Title check	✅ Passed	The title follows Conventional Commits format with type 'test' and a concise imperative summary under 72 characters.
Description check	✅ Passed	The description includes all required sections with substantive content addressing overview, details, reviewer guidance, and contributor confirmations.
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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[AjayThorve]

LGTM, the changed tests pass locally.

[willkill07]

/merge