test: add global virtualenvs coverage

[Karthik Nadig (karthiknadig)]

Summary:

• Add coverage for XDG data virtualenv children and default home .virtualenvs children in pet-global-virtualenvs.
• Keep the assertion on helper ordering/dedup behavior by using the function output directly.
• Covers a small utility-crate slice from the Coverage: ranked plan to move workspace coverage toward 90% #389 coverage plan.

Validation:

• cargo test -p pet-global-virtualenvs
• cargo fmt --all
• cargo clippy --all -- -D warnings

Refs #389

[github-actions]

Test Coverage Report (Linux)

Metric	Value
Current Coverage	73.7%
Base Branch Coverage	73.6%
Delta	.1% ✅

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Coverage increased! Great work!

[github-actions]

Performance Report (Linux) ✅

Metric	PR (P50)	PR (P95)	Baseline (P50)	Delta	Change
Server Startup	1ms	1ms	1ms	0ms	0%
Full Refresh	83ms	184ms	96ms	-13ms	-10.0%

Results based on 10 iterations. P50 = median, P95 = 95th percentile.

---

Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)

[github-actions]

Performance Report (macOS)

Metric	PR (P50)	PR (P95)	Baseline (P50)	Delta
Server Startup	57ms	548ms	58ms	-1ms
Full Refresh	117ms	27496ms	99ms	18ms

Results based on 10 iterations. P50 = median, P95 = 95th percentile.

---

Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)

[github-actions]

Test Coverage Report (Windows)

Metric	Value
Current Coverage	69.9%
Base Branch Coverage	69.86%
Delta	0.04% ✅

---

Coverage increased! Great work!

[github-actions]

Performance Report (Windows) ➖

Metric	PR (P50)	PR (P95)	Baseline (P50)	Delta	Change
Server Startup	10ms	15ms	8ms	2ms	25%
Full Refresh	175ms	395ms	128ms	47ms	36.7%

Results based on 10 iterations. P50 = median, P95 = 95th percentile.

---

Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)

[Copilot]

Pull request overview

Adds additional unit test coverage to the pet-global-virtualenvs utility crate to ensure global virtualenv discovery includes both XDG data locations (pipenv-style) and the default home .virtualenvs location.

Changes:

• Add a unit test verifying that virtualenv children under $XDG_DATA_HOME/virtualenvs and ~/.virtualenvs are both discovered.
• Assert deterministic ordering/dedup behavior by comparing directly against the function output (which sorts/dedups internally).

Show a summary per file

File	Description
crates/pet-global-virtualenvs/src/lib.rs	Adds a new unit test covering XDG + default home virtualenv child discovery paths.

Copilot's findings

• Files reviewed: 1/1 changed files
• Comments generated: 0