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99 lines
3.2 KiB
TypeScript
99 lines
3.2 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import {
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A4_HEIGHT_PX,
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A4_PAGE_BUDGET_PX,
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A4_WIDTH_PX,
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assertPageFits,
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PAGE_FIT_TOLERANCE_PX,
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} from '../../scripts/lib/buildPdf.mjs'
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// C187 extracted the A4 print plumbing so the institution builder (third
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// consumer) shares one owner with the C186 dossiê. Pins the mm→px budget and
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// the overflow guard that turns a cut page into a hard failure.
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describe('A4 print budget', () => {
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it('derives height/width from 297×210mm at 96dpi with rounding slack', () => {
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expect(A4_HEIGHT_PX).toBe(Math.round(297 * (96 / 25.4)))
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expect(A4_WIDTH_PX).toBe(Math.round(210 * (96 / 25.4)))
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expect(A4_PAGE_BUDGET_PX).toBe(A4_HEIGHT_PX + PAGE_FIT_TOLERANCE_PX)
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})
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})
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describe('assertPageFits', () => {
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it('passes when no page overflows', () => {
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expect(() => assertPageFits([], 'O dossiê', 'hint')).not.toThrow()
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})
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it('throws listing the overflowing page and its height', () => {
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expect(() =>
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assertPageFits(
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[{ page: 'resumo', height: A4_PAGE_BUDGET_PX + 50 }],
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'O dossiê',
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'corte copy',
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),
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).toThrow(/resumo: \d+px.*corte copy/s)
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})
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})
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import { emitHtmlPairPdf } from '../../scripts/lib/buildPdf.mjs'
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describe('emitHtmlPairPdf', () => {
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it('is exported as the single owner of the two-document emit contract', () => {
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expect(typeof emitHtmlPairPdf).toBe('function')
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})
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})
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import { mkdtemp, writeFile } from 'node:fs/promises'
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import { tmpdir } from 'node:os'
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import { join } from 'node:path'
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import { screenshotHtmlPng } from '../../scripts/lib/buildPdf.mjs'
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// C191: the PNG path is additive to the Chromium owner. The guard is on the
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// critical path (a >8 MB export must fail closed), so it is pinned with a fake
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// browser — no real Chromium launch in the unit suite.
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const fakeBrowser = (calls: string[]) => ({
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newPage: async () => ({
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setViewportSize: async (size: { width: number; height: number }) =>
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calls.push(`viewport:${size.width}x${size.height}`),
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setContent: async () => calls.push('content'),
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evaluate: async () => calls.push('fonts'),
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screenshot: async (options: { clip: { width: number; height: number } }) =>
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calls.push(`shot:${options.clip.width}x${options.clip.height}`),
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close: async () => calls.push('close'),
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}),
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})
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describe('screenshotHtmlPng', () => {
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it('sets the exact viewport, clips the canvas and closes the page', async () => {
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const calls: string[] = []
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const outPath = join(await mkdtemp(join(tmpdir(), 'c191-')), 'out.png')
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await writeFile(outPath, 'x')
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const result = await screenshotHtmlPng(fakeBrowser(calls), {
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html: '<html></html>',
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width: 1080,
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height: 1350,
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outPath,
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})
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expect(result.size).toBe(1)
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expect(calls).toContain('viewport:1080x1350')
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expect(calls).toContain('shot:1080x1350')
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expect(calls.at(-1)).toBe('close')
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})
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it('fails closed when the PNG exceeds maxBytes', async () => {
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const outPath = join(await mkdtemp(join(tmpdir(), 'c191-')), 'big.png')
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await writeFile(outPath, 'x'.repeat(10))
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await expect(
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screenshotHtmlPng(fakeBrowser([]), {
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html: '',
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width: 1080,
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height: 1080,
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outPath,
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maxBytes: 4,
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}),
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).rejects.toThrow(/> 4/)
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})
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})
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