Use branch coverage

[jayvdb]

Summary by CodeRabbit

• New Features

  • Added branch coverage support to Rust, WebAssembly, and Python coverage collection.
  • Combined coverage reports now include branch data across supported sources.

• Bug Fixes

  • Improved coverage report merging by ensuring consistent branch coverage configuration.
  • Enhanced WebAssembly coverage instrumentation for more complete test metrics.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 629b1fe2-e203-4da1-8700-c7d8e9f615ff

📥 Commits

Reviewing files that changed from the base of the PR and between 30f92d3 and 188afcf.

📒 Files selected for processing (5)

• .mise/config.coverage.toml
• .mise/config.toml
• config/coverage.toml
• services/ws-web-runner/src/shims/pycov.js
• utilities/wasm-cov-wrapper/src/main.rs

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📝 Walkthrough

Walkthrough

Branch coverage is enabled consistently across Rust and Python coverage instrumentation. Rust build flags, the wasm coverage wrapper, the coverage server, Python coverage configuration, and the Pyodide coverage shim now produce branch-aware coverage data.

Changes

Branch coverage instrumentation

Layer / File(s)	Summary
Rust branch instrumentation .mise/config.toml, .mise/config.coverage.toml, utilities/wasm-cov-wrapper/src/main.rs	Rust coverage flags now include nightly branch coverage for wasm builds, cargo-llvm-cov, the coverage server, and wasm32 crate compilation.
Python branch data collection config/coverage.toml, services/ws-web-runner/src/shims/pycov.js	Python coverage combination and Pyodide collection now enable branch coverage.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Possibly related PRs

• edge-toolkit/core#88: Updates related wasm-agent coverage orchestration and coverage-server instrumentation.

Suggested reviewers: pierre-tenedero

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: enabling branch coverage across the codebase.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ 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 branch-coverage

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[deepsource-io]

DeepSource Code Review

We reviewed changes in 30f92d3...188afcf on this pull request. Below is the summary for the review, and you can see the individual issues we found as inline review comments.

See full review on DeepSource ↗

PR Report Card

Overall Grade

Security   Reliability   Complexity   Hygiene   Coverage

Code Review Summary

Analyzer	Status	Updated (UTC)	Details
C#		Jul 22, 2026 2:05a.m.	Review ↗
C & C++		Jul 22, 2026 2:05a.m.	Review ↗
Docker		Jul 22, 2026 2:05a.m.	Review ↗
Java		Jul 22, 2026 2:05a.m.	Review ↗
JavaScript		Jul 22, 2026 2:05a.m.	Review ↗
Python		Jul 22, 2026 2:05a.m.	Review ↗
Rust		Jul 22, 2026 2:05a.m.	Review ↗
Secrets		Jul 22, 2026 2:05a.m.	Review ↗
Code coverage		Jul 22, 2026 2:31a.m.	Review ↗

Code Coverage Summary

Language	Line Coverage (Overall)
Aggregate	57.2% [▼ down 0.1% from main]
Python	69.7%
Rust	56.6% [▼ down 0.1% from main]

➟ Additional coverage metrics may have been reported. See full coverage report ↗

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Important

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Metrics 0 complexity · 0 duplication

Metric	Results
Complexity	0
Duplication	0

View in Codacy

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TIP This summary will be updated as you push new changes.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

📢 Thoughts on this report? Let us know!