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import { buildResultHtml, downloadResultReport, downloadPracticeResultHtml } from './reportGenerator'
import { testAPI } from '../api/api'
vi.mock('../api/api', () => ({
testAPI: {
downloadResultHtml: vi.fn(),
},
}))
describe('reportGenerator', () => {
describe('buildResultHtml', () => {
it('generates correct HTML for a practice result object', () => {
const mockResult = {
test_title: 'Mock Test Title',
attempt_number: 1,
submitted_at: '2026-06-23T12:00:00Z',
score: 10.5,
total_marks: 20,
percentage: 52.5,
correct: 5,
incorrect: 2,
skipped: 3,
answers: [
{
is_correct: true,
options: ['Option A', 'Option <B>'],
marks_awarded: 2,
question_text: 'What is 1+1?',
selected_answer: 'A',
correct_answer: 'A',
time_spent_seconds: 45,
},
{
is_correct: null, // skipped
options: [],
marks_awarded: 0,
question_text: 'NAT Question?',
selected_answer: '',
correct_answer: '42',
time_spent_seconds: 10,
},
],
}
const html = buildResultHtml(mockResult)
// Basic generation checks
expect(html).toContain('<!doctype html>')
expect(html).toContain('<title>Mock Test Title result</title>')
// Data and HTML escaping checks
expect(html).toContain('Mock Test Title')
expect(html).toContain('Option <B>') // Ensures escapeHtml works
expect(html).toContain('Practice attempt')
expect(html).toContain('What is 1+1?')
expect(html).toContain('NAT Question?')
// Status text
expect(html).toContain('Correct</span>')
expect(html).toContain('Skipped</span>')
// Default formatting checks
expect(html).toContain('10.50 / 20')
expect(html).toContain('53%') // Math.round(52.5)
})
it('handles empty results without crashing', () => {
const emptyResult = {}
const html = buildResultHtml(emptyResult)
expect(html).toContain('Practice attempt')
expect(html).toContain('NaN%')
})
})
describe('downloadResultReport', () => {
let createObjectURLSpy
let revokeObjectURLSpy
let createElementSpy
let appendChildSpy
beforeEach(() => {
createObjectURLSpy = vi.fn(() => 'blob:mock-url')
revokeObjectURLSpy = vi.fn()
global.URL.createObjectURL = createObjectURLSpy
global.URL.revokeObjectURL = revokeObjectURLSpy
vi.useFakeTimers()
})
afterEach(() => {
vi.restoreAllMocks()
vi.useRealTimers()
})
it('falls back to client-side practice report when attempt_id is missing', async () => {
const mockLink = {
href: '',
download: '',
click: vi.fn(),
remove: vi.fn(),
}
createElementSpy = vi.spyOn(document, 'createElement').mockReturnValue(mockLink)
appendChildSpy = vi.spyOn(document.body, 'appendChild').mockImplementation(() => {})
const mockResult = {
test_title: 'Practice Test 101',
}
await downloadResultReport(mockResult)
expect(testAPI.downloadResultHtml).not.toHaveBeenCalled()
expect(createObjectURLSpy).toHaveBeenCalledTimes(1)
const blobArg = createObjectURLSpy.mock.calls[0][0]
expect(blobArg).toBeInstanceOf(Blob)
expect(blobArg.type).toBe('text/html;charset=utf-8')
expect(mockLink.download).toBe('practice-test-101-practice-result.html')
expect(mockLink.click).toHaveBeenCalledTimes(1)
vi.runAllTimers()
expect(revokeObjectURLSpy).toHaveBeenCalledWith('blob:mock-url')
})
it('downloads server-rendered HTML for persisted attempt_id', async () => {
const mockLink = {
href: '',
download: '',
click: vi.fn(),
remove: vi.fn(),
}
createElementSpy = vi.spyOn(document, 'createElement').mockReturnValue(mockLink)
appendChildSpy = vi.spyOn(document.body, 'appendChild').mockImplementation(() => {})
const mockBlob = new Blob(['<!DOCTYPE html><html><body>Server Rendered Report</body></html>'], { type: 'text/html' })
testAPI.downloadResultHtml.mockResolvedValueOnce({
data: mockBlob,
})
const mockResult = {
attempt_id: 42,
test_title: 'GATE CS Mock 2026',
}
await downloadResultReport(mockResult)
expect(testAPI.downloadResultHtml).toHaveBeenCalledWith(42)
expect(createObjectURLSpy).toHaveBeenCalledTimes(1)
const blobArg = createObjectURLSpy.mock.calls[0][0]
expect(blobArg).toBeInstanceOf(Blob)
expect(blobArg.type).toBe('text/html')
expect(mockLink.download).toBe('gate-cs-mock-2026-result.html')
expect(mockLink.click).toHaveBeenCalledTimes(1)
vi.runAllTimers()
expect(revokeObjectURLSpy).toHaveBeenCalledWith('blob:mock-url')
})
})
})
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