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Add tests for EPUB CFI
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John Factotum
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import * as CFI from '../epubcfi.js'
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const parser = new DOMParser()
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const XML = str => parser.parseFromString(str, 'application/xml')
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const XHTML = str => parser.parseFromString(str, 'application/xhtml+xml')
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{
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// example from EPUB CFI spec
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const opf = XML(`<?xml version="1.0"?>
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<package version="2.0"
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unique-identifier="bookid"
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xmlns="http://www.idpf.org/2007/opf"
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xmlns:dc="http://purl.org/dc/elements/1.1/"
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xmlns:opf="http://www.idpf.org/2007/opf">
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<metadata>
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<dc:title>…</dc:title>
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<dc:identifier id="bookid">…</dc:identifier>
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<dc:creator>…</dc:creator>
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<dc:language>en</dc:language>
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</metadata>
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<manifest>
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<item id="toc"
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properties="nav"
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href="toc.xhtml"
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media-type="application/xhtml+xml"/>
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<item id="titlepage"
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href="titlepage.xhtml"
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media-type="application/xhtml+xml"/>
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<item id="chapter01"
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href="chapter01.xhtml"
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media-type="application/xhtml+xml"/>
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<item id="chapter02"
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href="chapter02.xhtml"
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media-type="application/xhtml+xml"/>
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<item id="chapter03"
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href="chapter03.xhtml"
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media-type="application/xhtml+xml"/>
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<item id="chapter04"
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href="chapter04.xhtml"
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media-type="application/xhtml+xml"/>
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</manifest>
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<spine>
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<itemref id="titleref" idref="titlepage"/>
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<itemref id="chap01ref" idref="chapter01"/>
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<itemref id="chap02ref" idref="chapter02"/>
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<itemref id="chap03ref" idref="chapter03"/>
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<itemref id="chap04ref" idref="chapter04"/>
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</spine>
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</package>`)
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const page = XHTML(`<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>…</title>
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</head>
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<body id="body01">
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<p>…</p>
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<p>…</p>
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<p>…</p>
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<p>…</p>
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<p id="para05">xxx<em>yyy</em>0123456789</p>
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<p>…</p>
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<p>…</p>
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<img id="svgimg" src="foo.svg" alt="…"/>
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<p>…</p>
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<p>…</p>
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</body>
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</html>`)
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// the exact same page with some text nodes removed, CDATA sections added,
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// and characters changed to entities
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const page2 = XHTML(`<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>…</title>
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</head>
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<body id="body01">
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<p>…</p><p>…</p><p>…</p><p>…</p>
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<p id="para05">xxx<em>yyy</em><![CDATA[0123]]>45<![CDATA[67]]>89</p>
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<p>…</p>
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<p>…</p>
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<img id="svgimg" src="foo.svg" alt="…"/>
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<p>…</p>
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<p>…</p>
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</body>
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</html>`)
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const a = opf.getElementById('chap01ref')
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const b = CFI.toElement(opf, CFI.parse('/6/4[chap01ref]')[0])
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const c = CFI.toElement(opf, CFI.parse('/6/4')[0])
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console.assert(a === b)
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console.assert(a === c)
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const test = page => {
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for (const cfi of [
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'/4[body01]/10[para05]/3:10',
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'/4[body01]/16[svgimg]',
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'/4[body01]/10[para05]/1:0',
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'/4[body01]/10[para05]/2/1:0',
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'/4[body01]/10[para05]/2/1:3',
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]) {
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const range = CFI.toRange(page, CFI.parse(cfi))
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const a = CFI.fromRange(range)
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const b = `epubcfi(${cfi})`
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console.assert(a === b, `expected ${b}, got ${a}`)
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}
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for (let i = 0; i < 10; i++) {
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const cfi = `/4/10,/3:${i},/3:${i+1}`
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const range = CFI.toRange(page, CFI.parse(cfi))
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const n = `${i}`
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console.assert(range.toString() === n, `expted ${n}, got ${range}`)
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}
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}
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test(page)
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test(page2)
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}
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{
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// special characters in ID assertions
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const opf = XML(`<?xml version="1.0"?>
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<package version="2.0"
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unique-identifier="bookid"
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xmlns="http://www.idpf.org/2007/opf"
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xmlns:dc="http://purl.org/dc/elements/1.1/"
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xmlns:opf="http://www.idpf.org/2007/opf">
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<metadata></metadata>
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<manifest></manifest>
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<spine>
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<itemref id="titleref" idref="titlepage"/>
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<itemref id="chap0]!/1ref^" idref="chapter01"/>
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<itemref id="chap02ref" idref="chapter02"/>
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<itemref id="chap03ref" idref="chapter03"/>
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<itemref id="chap04ref" idref="chapter04"/>
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</spine>
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</package>`)
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const a = opf.getElementById('chap0]!/1ref^')
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const b = CFI.toElement(opf, CFI.parse('/6/4[chap0^]!/1ref^^]')[0])
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console.assert(a === b)
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const page = XHTML(`<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>…</title>
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</head>
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<body id="body0]!/1^">
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<p>…</p>
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<p>…</p>
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<p>…</p>
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<p>…</p>
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<p id="para]/0,/5">xxx<em>yyy</em>0123456789</p>
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<p>…</p>
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<p>…</p>
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<img id="s][vgimg" src="foo.svg" alt="…"/>
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<p>…</p>
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<p>…</p>
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</body>
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</html>`)
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for (const cfi of [
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'/4[body0^]!/1^^]/10[para^]/0^,/5]/3:10',
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'/4[body0^]!/1^^]/16[s^]^[vgimg]',
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'/4[body0^]!/1^^]/10[para^]/0^,/5]/1:0',
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'/4[body0^]!/1^^]/10[para^]/0^,/5]/2/1:0',
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'/4[body0^]!/1^^]/10[para^]/0^,/5]/2/1:3',
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]) {
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const range = CFI.toRange(page, CFI.parse(cfi))
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const a = CFI.fromRange(range)
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const b = `epubcfi(${cfi})`
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console.assert(a === b, `expected ${b}, got ${a}`)
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}
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for (let i = 0; i < 10; i++) {
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const cfi = `/4[body0^]!/1^^]/10[para^]/0^,^/5],/3:${i},/3:${i+1}`
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const range = CFI.toRange(page, CFI.parse(cfi))
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const n = `${i}`
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console.assert(range.toString() === n, `expted ${n}, got ${range}`)
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}
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}
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{
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for (const [a, b, c] of [
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['/6/4!/10', '/6/4!/10', 0],
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['/6/4!/2/3:0', '/6/4!/2', 1],
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['/6/4!/2/4/6/8/10/3:0', '/6/4!/4', -1],
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[
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'/6/4[chap0^]!/1ref^^]!/4[body01^^]/10[para^]^,05^^]',
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'/6/4!/4/10',
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0,
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],
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[
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'/6/4[chap0^]!/1ref^^]!/4[body01^^],/10[para^]^,05^^],/15:10[foo^]]',
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'/6/4!/4/12',
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-1,
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],
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]) {
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const x = CFI.compare(a, b)
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console.assert(x === c, `compare ${a} and ${b}, expected ${c}, got ${x}`)
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}
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}
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