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test(useQuiz): assert second answer to same question is a no-op #1119

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Merged
RUKAYAT-CODER merged 1 commit into from
Jul 30, 2026
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test(useQuiz): assert second answer to same question is a no-op #1119

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17 changes: 17 additions & 0 deletions src/hooks/__tests__/useQuiz.test.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,23 @@ describe('quiz grading helpers', () => {
});

describe('useQuiz', () => {
it('ignores a second answer to an already-answered question', () => {
const { result } = renderHook(() => useQuiz({ quiz: quizFixture, autoStart: false }));

act(() => {
result.current.actions.answerQuestion('mc-1', 'b'); // correct
});

const firstAnswer = result.current.answers['mc-1'];

act(() => {
result.current.actions.answerQuestion('mc-1', 'a'); // attempt to change to wrong
});

expect(result.current.answers['mc-1']).toBe(firstAnswer);
expect(result.current.score).toBe(2);
});

it('tracks partial code-credit and regular grading without regressing score updates', () => {
const { result } = renderHook(() => useQuiz({ quiz: quizFixture, autoStart: false }));

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