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school_compare/nextjs-app/__tests__/components/schoolPupilCount.test.tsx
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/**
* "Pupils" on a school page is the size of the school.
*
* A year's results row carries the cohort its figures were measured on. For a
* secondary that is the GCSE year group alone (Burntwood: 245, against 1,462
* on roll), so it must never stand in for the whole-school count.
*/
import { screen } from '@testing-library/react';
import { secondaryFixture } from '../support/schoolFixtures';
import { renderSecondarySchoolDetail } from '../support/renderSchoolDetail';
jest.mock('@/lib/analytics', () => ({
track: jest.fn(),
getNavigationSource: () => 'direct',
}));
jest.mock('@/components/PerformanceChart', () => ({
PerformanceChart: () => <div data-testid="performance-chart" />,
}));
jest.mock('@/components/SatsChart', () => ({
__esModule: true,
default: () => <div data-testid="sats-chart" />,
}));
jest.mock('@/components/AdmissionsTrendChart', () => ({
__esModule: true,
default: () => <div data-testid="admissions-trend-chart" />,
}));
jest.mock('@/components/SchoolHeroMap', () => ({
SchoolHeroMap: () => <div data-testid="hero-map" />,
__esModule: true,
}));
function withoutCensus(schoolTotal: number | null) {
const yearlyData = secondaryFixture.yearlyData.map((r) => ({ ...r, total_pupils: 245 }));
return {
...secondaryFixture,
census: null,
yearlyData,
schoolInfo: { ...secondaryFixture.schoolInfo, total_pupils: schoolTotal },
};
}
describe('pupil count without a census record', () => {
it('uses the register count in the header, not the results cohort', () => {
renderSecondarySchoolDetail(withoutCensus(1462));
const pupils = screen.getByText('Pupils:').parentElement!;
expect(pupils).toHaveTextContent('1,462');
expect(pupils).not.toHaveTextContent('245');
});
it('shows no count rather than the results cohort when the register has none', () => {
renderSecondarySchoolDetail(withoutCensus(null));
expect(screen.queryByText('Pupils:')).not.toBeInTheDocument();
expect(screen.queryByText('Total pupils')).not.toBeInTheDocument();
});
});