test(ci): upload CI test results to codecov

[hanabi1224]

Summary of changes

test results uploaded to https://app.codecov.io/gh/ChainSafe/forest/tests/hm%2Fjunit-test-results

Changes introduced in this pull request:

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

Outside contributions

• I have read and agree to the CONTRIBUTING document.
• I have read and agree to the AI Policy document. I understand that failure to comply with the guidelines will lead to rejection of the pull request.

Summary by CodeRabbit

• Tests
  • Added a dedicated JUnit test output so test results are consistently produced.
  • CI now uploads test results to Codecov, improving visibility of test outcomes and coverage.
  • Enhances overall test reporting and tracking across runs for more reliable feedback.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 50c887d5-1566-4a7d-8af9-111db4952141

📥 Commits

Reviewing files that changed from the base of the PR and between 817fdd6 and 1b242cc.

📒 Files selected for processing (2)

• .config/nextest.toml
• .github/workflows/unit-tests.yml

🚧 Files skipped from review as they are similar to previous changes (1)

• .config/nextest.toml

---

Walkthrough

Adds a Nextest JUnit output path to .config/nextest.toml and a Codecov upload step to the .github/workflows/unit-tests.yml CI workflow that uploads target/nextest/default/junit.xml via codecov-action@v5.

Changes

Cohort / File(s)	Summary
Nextest config .config/nextest.toml	Adds [profile.default.junit] with path = "junit.xml" to declare JUnit output path for Nextest.
CI workflow .github/workflows/unit-tests.yml	Adds a step "Upload Test Results to CodeCov" using codecov-action@v5, conditional on non-cancelled runs, uploads target/nextest/default/junit.xml and uses CODECOV_TOKEN.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix(ci): disable debug tests #6357: Modifies .github/workflows/unit-tests.yml; may overlap with CI workflow changes here.
• chore: resurrect codecov reports #6324: Adds Codecov integration and coverage workflow; strongly related to the Codecov upload step added here.

Suggested reviewers

• LesnyRumcajs
• akaladarshi

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding CI integration to upload test results to Codecov, which is supported by changes in both the nextest config and GitHub Actions workflow.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch hm/junit-test-results

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch hm/junit-test-results

📝 Coding Plan

• Generate coding plan for human review comments

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In @.github/workflows/unit-tests.yml:
- Around line 86-92: The "Upload Test Results to CodeCov" job step currently
runs only on success; modify that step (the step named "Upload Test Results to
CodeCov" that uses codecov/codecov-action@v5 and uses token: ${{
secrets.CODECOV_TOKEN }}) to include an if: condition so it runs on both success
and failure (but not on manual cancel), e.g. add if: "!cancelled()" to the step
declaration so test results are uploaded even when tests fail.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 5da2b32c-930f-4fea-b2fb-c04b48598a9c

📥 Commits

Reviewing files that changed from the base of the PR and between a3f7804 and 817fdd6.

📒 Files selected for processing (2)

• .config/nextest.toml
• .github/workflows/unit-tests.yml