[replay #7509] test(frontend): cover the joint graph wrapper's layout and co-editor paths

[sshiv012]

Replay of apache#7509 for CodeRabbit evaluation.

merge-base 42d08a3701cd head 3dd6d7be933a stratum frontend

Synthetic evaluation PR. Do not merge.

• Added 20 frontend tests for joint-graph-wrapper.
• Covered layout, link changes, paper attachment, rendering, cell guards, and co-editor behavior.
• Increased reported coverage to 97.91% for lines and 96.47% for branches.
• Updated JointUIService imports for co-editor CSS class constants.
• No production files changed.

Author	Lines added	Lines removed
Not available	423	1

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 98c7b4a4-0782-4a33-83d7-bdbf2a33d871

📥 Commits

Reviewing files that changed from the base of the PR and between 42d08a3 and 3dd6d7b.

📒 Files selected for processing (1)

• frontend/src/app/workspace/service/workflow-graph/model/joint-graph-wrapper.spec.ts

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📝 Walkthrough

Walkthrough

The test suite expands coverage for JointGraphWrapper graph operations, paper rendering, asynchronous behavior, and coeditor presence and editing states.

Changes

Joint graph wrapper test coverage

Layer / File(s)	Summary
Graph operations and layout frontend/src/app/workspace/service/workflow-graph/model/joint-graph-wrapper.spec.ts	Tests cover invalid operations, highlighting, cell removal, position tracking, link endpoint changes, and auto-layout.
Paper attachment and rendering frontend/src/app/workspace/service/workflow-graph/model/joint-graph-wrapper.spec.ts	Tests cover paper publication, asynchronous rendering, deferred highlights, and behavior without an attached paper.
Coeditor presence and editing UI frontend/src/app/workspace/service/workflow-graph/model/joint-graph-wrapper.spec.ts	Tests cover coeditor highlight rings, editing banners, ownership protection, animated updates, removal, and property changes.

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

🚥 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 and concisely describes the added frontend tests for joint graph wrapper layout and co-editor paths.
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 replay/7509-head

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