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294088fb27
* make the content cache manager tests configurable * extend stream content in unit tests * [ContentCacheManagerTests] prepare for full object caching * filesystem stream for pdfjs * working?? * cleaning up * handle overflow * [misc] install pdfjs-dist * [misc] move pdfjs code into app/lib/ and scripts/, also use CamelCase * [misc] abstract the file loading and parsing of xRef tables into helper * [misc] pdfjsTests: add snapshot based tests for the Xref table parser * [misc] FSStream: throw proper error and drop commented code * [misc] FSStream: integrate throwing of MissingDataException into getter * [misc] pdfjs: fix eslint errors * [misc] pdfjs: run format_fix * [misc] pdfjs: allocate very small non empty dummy buffers explicitly * [misc] install @overleaf/o-error * [ContentCacheManager] use PDF.js Xref table instead of stream detection Co-Authored-By: Brian Gough <brian.gough@overleaf.com> * [pdfjs] parseXrefTable: handle empty PDF files gracefully Co-authored-by: Brian Gough <brian.gough@overleaf.com>
78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
const fs = require('fs')
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const Path = require('path')
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const { expect } = require('chai')
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const { parseXrefTable } = require('../../../app/lib/pdfjs/parseXrefTable')
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const PATH_EXAMPLES = 'test/acceptance/fixtures/examples/'
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const PATH_SNAPSHOTS = 'test/unit/lib/snapshots/'
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const EXAMPLES = fs.readdirSync(PATH_EXAMPLES)
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function snapshotPath(example) {
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return Path.join(PATH_SNAPSHOTS, example, 'XrefTable.json')
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}
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function pdfPath(example) {
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return Path.join(PATH_EXAMPLES, example, 'output.pdf')
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}
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async function loadContext(example) {
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const size = (await fs.promises.stat(pdfPath(example))).size
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let blob
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try {
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blob = await fs.promises.readFile(snapshotPath(example))
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} catch (e) {
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if (e.code !== 'ENOENT') {
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throw e
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}
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}
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const snapshot = blob ? JSON.parse(blob) : null
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return {
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size,
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snapshot
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}
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}
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async function backFillSnapshot(example, size) {
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const table = await parseXrefTable(pdfPath(example), size)
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await fs.promises.mkdir(Path.dirname(snapshotPath(example)), {
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recursive: true
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})
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await fs.promises.writeFile(
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snapshotPath(example),
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JSON.stringify(table, null, 2)
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)
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return table
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}
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describe('pdfjs', function () {
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describe('when the pdf is an empty file', function () {
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it('should yield no entries', async function () {
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const path = 'does/not/matter.pdf'
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const table = await parseXrefTable(path, 0)
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expect(table).to.deep.equal([])
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})
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})
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for (const example of EXAMPLES) {
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describe(example, function () {
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let size, snapshot
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before('load snapshot', async function () {
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const ctx = await loadContext(example)
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size = ctx.size
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snapshot = ctx.snapshot
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})
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before('back fill new snapshot', async function () {
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if (snapshot === null) {
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console.error('back filling snapshot for', example)
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snapshot = await backFillSnapshot(example, size)
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}
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})
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it('should produce the expected xRef table', async function () {
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const table = await parseXrefTable(pdfPath(example), size)
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expect(table).to.deep.equal(snapshot)
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})
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})
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}
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})
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