test(Icons-mock-integrations): verify Asynchronous Service Layer Mocking & Local Cache Stubs

[adityack477]

…ing & Local Cache Stubs

Description

Fixes #2821

Pillar

• 🎨 Pillar 1 — New Theme Design
• 📐 Pillar 2 — Geometric SVG Improvement
• 🕐 Pillar 3 — Timezone Logic Optimization
• 🛠️ Other (Bug fix, refactoring, docs)

What changed

• Created new file app/components/Icons.mock-integrations.test.tsx with 5 test cases

Test cases

1. Renders icons synchronously without requiring any async service calls
2. Queries local cache before triggering remote service retrieval
3. Falls back to remote fetch when local cache has no entry
4. Returns a fallback result and does not throw when the async endpoint times out
5. Writes complete metadata to cache after a successful async fetch

How it works

• Simulates an async service layer with a local cache stub using vi.fn()
• Verifies cache is always checked before hitting the remote service
• Confirms pending/loading state never blocks icon rendering
• Tests timeout fallback procedure returns a safe default without throwing
• Asserts full cache sync occurs on successful service response

Tests

All 5 new tests pass. All existing tests pass.

Visual Preview

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally (localhost:3000/api/streak?user=YOUR_USERNAME).
• I have run npm run format and npm run lint locally and resolved all errors (CI will fail otherwise).
• My commits follow the Conventional Commits format (e.g., feat(themes): ..., fix(calculate): ...).
• I have updated README.md if I added a new theme or URL parameter.
• I have started the repo.
• I have made sure that i have only one commit to merge in this PR.
• The SVG output matches the CommitPulse "premium quality" aesthetic standard (no raw elements, smooth animations, correct fonts).
• (Recommended) I joined the CommitPulse Discord community for contributor discussions, mentorship, and faster PR support.

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[adityack477]

@JhaSourav07 pls review and add gssoc:approved label

[github-actions]

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