🧹 [code health improvement] Refactor ShareButtons tests to mock useCopyToClipboard

[is0692vs]

🎯 What: Simplified ShareButtons.test.tsx by mocking the useCopyToClipboard hook instead of testing navigator.clipboard and document.execCommand implementation details.
💡 Why: Reduces test complexity, removes duplicated logic (which is already tested in useCopyToClipboard.test.ts), and focuses the component tests on its actual responsibilities (rendering UI and calling hook methods).
✅ Verification: Verified that the component tests pass and the full test suite remains green.
✨ Result: Much cleaner, more readable component tests.

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PR created automatically by Jules for task 469711009515862113 started by @is0692vs

Greptile Summary

ShareButtons のテストを、ブラウザの Clipboard API 実装詳細ではなく useCopyToClipboard とのコンポーネント契約に集中させるリファクタリングです。

• Clipboard API、execCommand、タイマーに関する重複テストを削除
• フックをモックし、コピー URL と表示状態を直接検証
• X 共有 URL と window.open の呼び出しを引き続き検証

Confidence Score: 5/5

この変更はテスト責務を適切に分離しており、安全にマージできると判断します。

Clipboard API の成功、フォールバック、失敗、タイマー処理は専用フックテストに残され、変更後のコンポーネントテストも URL の受け渡し、表示状態、X 共有処理を検証しているため、実動作の回帰検知に重大な欠落はありません。

Important Files Changed

Filename	Overview
src/components/ShareButtons.test.tsx	useCopyToClipboard をモックしてコンポーネントの責務に絞ったテストへ整理されており、削除されたフック内部の挙動は専用テストでカバーされています。

_{Reviews (1): Last reviewed commit: "Refactor ShareButtons tests to mock useC..." | Re-trigger Greptile}

Context used:

• Knowledge Base — Frontend component library (src/components)

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Project	Deployment	Actions	Updated (UTC)
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📥 Commits

Reviewing files that changed from the base of the PR and between eb95c48 and 2b83876.

📒 Files selected for processing (1)

• src/components/ShareButtons.test.tsx

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[qodo-code-review]

PR Summary by Qodo

Refactor ShareButtons tests to mock useCopyToClipboard hook

🧪 Tests 🕐 10-20 Minutes

AI Description

• Mock useCopyToClipboard in ShareButtons component tests to avoid clipboard API implementation
 details.
• Focus tests on UI behavior (label state) and correct handler calls (copy/share).
• Remove brittle timer/clipboard fallback assertions already covered by the hook’s unit tests.

Diagram

graph TD
  T["ShareButtons.test.tsx"] --> C["ShareButtons.tsx"] --> H(["useCopyToClipboard() (mocked)"])
  C --> WL["window.location.origin"]
  C --> WO["window.open()"]
  H -. "real impl handles" .-> CL{{"Clipboard internals"}}

  subgraph Legend
    direction LR
    _cmp["Component/Test"] ~~~ _hook(["Hook"]) ~~~ _ext{{"External API"}}
  end

Loading

High-Level Assessment

The following are alternative approaches to this PR:

1. Keep integration-style clipboard tests in the component

• ➕ Covers real browser API wiring from the component down to DOM/clipboard fallbacks
• ➕ Can catch regressions where the component stops invoking the hook/clipboard correctly
• ➖ Brittle in jsdom (timers/clipboard/execCommand mocking) and often tests hook internals twice
• ➖ Harder to maintain; failures tend to be noisy and environment-dependent

2. Move clipboard behavior coverage to E2E (Playwright) and keep unit tests mocked

• ➕ Validates real clipboard/share behavior in an actual browser environment
• ➕ Keeps unit tests fast and deterministic
• ➖ Higher runtime and infra cost; clipboard permissions can complicate CI
• ➖ Still needs unit coverage for edge cases (fallback/logging)

Recommendation: Mocking useCopyToClipboard in ShareButtons unit tests is the best tradeoff here: it keeps component tests focused on rendering and event wiring, while avoiding duplicate coverage of clipboard fallback paths that belong to the hook’s unit tests. If true end-to-end clipboard behavior is critical, add a small Playwright smoke test rather than reintroducing jsdom-level clipboard internals.

Files changed (1) +39 / -243

Tests (1) +39 / -243

ShareButtons.test.tsxReplace clipboard/execCommand integration assertions with hook mocking +39/-243

Replace clipboard/execCommand integration assertions with hook mocking

• Removes tests that directly exercise navigator.clipboard/document.execCommand and timer-based feedback transitions. Introduces a vi.mock of useCopyToClipboard to assert the component calls copyToClipboard with the expected URL and renders the correct label for copied vs not-copied states. Adds a focused share test verifying window.open is called with the expected X intent URL.

src/components/ShareButtons.test.tsx

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[qodo-code-review]

Code Review by Qodo

🐞 Bugs (0) 📘 Rule violations (0) 📎 Requirement gaps (0)

Great, no issues found!

Qodo reviewed your code and found no material issues that require review

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