Add a fake-timer test for useQuiz timer auto-submit on expiry

[RUKAYAT-CODER]

Overview
src/hooks/useQuiz.tsx (lines 209-229) runs an interval that decrements the remaining time and calls complete() at zero, but src/hooks/tests/useQuiz.test.tsx only covers grading helpers and one answer/score flow — there is no test verifying auto-submit at expiry, that the timer clears on completion, or that it does not run in review mode. Add a fake-timer test asserting complete() fires and isCompleted becomes true at expiry.

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[titilope12]

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Hello Maintainer, I can fix this issues

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[payfoxX]

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I love to fix this issue, kindly assign it to me. Thanks

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[Muyideen-js]

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Hi, I can fix this

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[Alimzy]

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Hi! I'd like to work on this issue.

I'm a software engineer with hands-on experience in testing, debugging, and building reliable features across the stack. I'm confident I can take this on and deliver a solid, well-tested solution that follows the project's existing conventions.

I'll make sure to cover the core functionality as well as relevant edge cases to keep things reliable and regression-resistant.

Let me know if I can get started, and I'll provide updates as I progress.

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[Olamidepy]

@Olamidepy has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi Maintainer,

I would love to be assigned to this issue.

I’m a Full-Stack Developer and I also actively explore blockchain development and smart contracts, which has strengthened my problem-solving skills and attention to code quality.

After reviewing the issue, I believe I can contribute effectively and deliver a well-tested solution within the expected standards of the project.

ETA: 4 hours

Thank you for your consideration.

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[dee-john]

@dee-john has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

i’m very conversant in solving problems like this, let me work on it

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Congratulations, @payfoxX! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @payfoxX: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊