test: cover CopyButton clipboard states

[saurabhhhcodes]

Summary

• Add component tests for CopyButton accessibility, custom props, clipboard success/failure, analytics, copied-state reset, repeated clicks, and unmount cleanup.
• Use a deterministic local timer scheduler and mocked browser clipboard/analytics APIs.

Validation

• cd web && bun test src/components/copy-button.test.tsx
• cd web && bun run typecheck
• git diff --check

Fixes #262

Note

Add unit tests for CopyButton clipboard states

Adds a test suite in copy-button.test.tsx covering the full CopyButton lifecycle: accessible label synthesis and override, successful copy with analytics emission, scheduled label reset after 1600ms, timeout replacement on repeated clicks, failure path (no label change, no analytics), and timer cleanup on unmount. Uses custom installDeterministicTimers and installClipboard helpers for full control over async behavior without real timers or clipboard APIs.

^{Macroscope summarized 028dcc3.}

Summary by CodeRabbit

• Tests
  • Added comprehensive coverage for the copy button’s accessibility labels, custom properties, clipboard behavior, copied-state messaging, reset timing, analytics events, error handling, and cleanup.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 3170d6cd-5fbf-4a41-901b-bff5366e559d

📥 Commits

Reviewing files that changed from the base of the PR and between a65d772 and 028dcc3.

📒 Files selected for processing (1)

• web/src/components/copy-button.test.tsx

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📝 Walkthrough

Walkthrough

Adds component tests covering CopyButton accessibility, clipboard success and failure states, analytics emission, timer resets, repeated clicks, and cleanup on unmount.

Changes

CopyButton component tests

Layer / File(s)	Summary
Test harness and accessibility coverage web/src/components/copy-button.test.tsx	Adds deterministic timer and clipboard mocks, resets test globals, and verifies bounded accessible labels and preserved custom props.
Copy lifecycle, analytics, and cleanup web/src/components/copy-button.test.tsx	Tests successful copies, copied-label resets, analytics payloads, repeated-click timer replacement, rejected writes, and unmount cleanup.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: ankanmisra

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description includes summary and validation, but it omits most required template sections like type, affected areas, checklist, and notes.	Fill out the full template, especially Type Of Change, Affected Areas, Contributor Checklist, Verification details, and Notes For Reviewers.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and accurately summarizes the new CopyButton test coverage.
Linked Issues check	✅ Passed	The tests cover the linked issue's required CopyButton states, analytics, timer reset behavior, failure path, and unmount cleanup.
Out of Scope Changes check	✅ Passed	The change appears focused on a single test file and does not introduce unrelated runtime or UI changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[AnkanMisra]

Thanks for the focused coverage—most of issue #262 is well protected. One documented timing contract still needs an assertion before merge.

Verdict: request changes

Biggest risk: the copied-state duration can regress without this suite failing.

Tests: CI web lint/build is green; the supplied review also reports the full web suite, typecheck, and lint passing.

[AnkanMisra]

[P2] Assert the 1.6-second reset delay

File: web/src/components/copy-button.test.tsx

Problem: The fake setTimeout discards its delay argument, and the reset test invokes the callback manually. A runtime change from 1600 ms to an incorrect value would therefore still pass.

Impact: The explicitly documented 1.6-second behavior in issue #262 is not protected against regression.

Fix: Record the delay supplied to setTimeout and assert that the scheduled reset uses 1600 ms.

[saurabhhhcodes]

Implemented the requested review fix in 028dcc3: the deterministic timer harness now records delays, and the reset test asserts the component schedules the documented 1600ms timeout. Revalidated the focused unit test, web typecheck, lint, and git diff --check.