Implemented Xml Struct

This commit is contained in:
Kevin Jahns 2017-08-24 14:44:23 +02:00
parent 86c46cf0ec
commit ab6cde07e6
19 changed files with 1087 additions and 590 deletions

1
.gitignore vendored
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@ -1,3 +1,4 @@
node_modules
bower_components
/y.*
/examples/yjs-dist.js*

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@ -0,0 +1,58 @@
<!DOCTYPE html>
<html>
<body>
<style>
.wrapper {
display: grid;
grid-template-columns: repeat(3, 1fr);
grid-gap: 7px;
}
.one {
grid-column: 1 ;
}
.two {
grid-column: 2;
}
.three {
grid-column: 3;
}
textarea {
width: calc(100% - 10px)
}
.editor-container {
background-color: #4caf50;
padding: 4px 5px 10px 5px;
border-radius: 11px;
}
.editor-container[disconnected] {
background-color: red;
}
.disconnected-info {
display: none;
}
.editor-container[disconnected] .disconnected-info {
display: inline;
}
</style>
<div class="wrapper">
<div id="container1" class="one editor-container">
<h1>Server 1 <span class="disconnected-info">(disconnected)</span></h1>
<textarea id="textarea1" rows=40 autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"></textarea>
</div>
<div id="container2" class="two editor-container">
<h1>Server 2 <span class="disconnected-info">(disconnected)</span></h1>
<textarea id="textarea2" rows=40 autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"></textarea>
</div>
<div id="container3" class="three editor-container">
<h1>Server 3 <span class="disconnected-info">(disconnected)</span></h1>
<textarea id="textarea3" rows=40 autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"></textarea>
</div>
</div>
<script src="../../y.js"></script>
<script src="../../../y-array/y-array.js"></script>
<script src="../../../y-text/dist/y-text.js"></script>
<script src="../../../y-memory/y-memory.js"></script>
<script src="../../../y-websockets-client/y-websockets-client.js"></script>
<script src="./index.js"></script>
</body>
</html>

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@ -0,0 +1,64 @@
/* global Y */
Y({
db: {
name: 'memory'
},
connector: {
name: 'websockets-client',
room: 'Textarea-example',
url: 'https://yjs-v13.herokuapp.com/'
},
share: {
textarea: 'Text'
}
}).then(function (y) {
window.y1 = y
y.share.textarea.bind(document.getElementById('textarea1'))
})
Y({
db: {
name: 'memory'
},
connector: {
name: 'websockets-client',
room: 'Textarea-example',
url: 'https://yjs-v13-second.herokuapp.com/'
},
share: {
textarea: 'Text'
}
}).then(function (y) {
window.y2 = y
y.share.textarea.bind(document.getElementById('textarea2'))
y.connector.socket.on('connection', function () {
document.getElementById('container2').removeAttribute('disconnected')
})
y.connector.socket.on('disconnect', function () {
document.getElementById('container2').setAttribute('disconnected', true)
})
})
Y({
db: {
name: 'memory'
},
connector: {
name: 'websockets-client',
room: 'Textarea-example',
url: 'https://yjs-v13-third.herokuapp.com/'
},
share: {
textarea: 'Text'
}
}).then(function (y) {
window.y3 = y
y.share.textarea.bind(document.getElementById('textarea3'))
y.connector.socket.on('connection', function () {
document.getElementById('container3').removeAttribute('disconnected')
})
y.connector.socket.on('disconnect', function () {
document.getElementById('container3').setAttribute('disconnected', true)
})
})

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@ -2,6 +2,10 @@
"name": "examples",
"version": "0.0.0",
"description": "",
"scripts": {
"dist": "rollup -c",
"watch": "rollup -cw"
},
"author": "Kevin Jahns",
"license": "MIT",
"dependencies": {

27
examples/rollup.config.js Normal file
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@ -0,0 +1,27 @@
import nodeResolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
var pkg = require('./package.json')
export default {
entry: 'yjs-dist.esm',
dest: 'yjs-dist.js',
moduleName: 'Y',
format: 'umd',
plugins: [
nodeResolve({
main: true,
module: true,
browser: true
}),
commonjs()
],
sourceMap: true,
banner: `
/**
* ${pkg.name} - ${pkg.description}
* @version v${pkg.version}
* @license ${pkg.license}
*/
`
}

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@ -12,12 +12,12 @@ Y({
connector: {
name: 'websockets-client',
room: 'Textarea-example',
url: url || 'http://127.0.0.1:1234'
// url: '//localhost:1234',
url: 'https://yjs-v13.herokuapp.com/',
// options: { transports: ['websocket'], upgrade: false }
},
sourceDir: '/bower_components',
share: {
textarea: 'Text', // y.share.textarea is of type Y.Text
test: 'Array'
textarea: 'Text'
}
}).then(function (y) {
window.yTextarea = y

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@ -1,8 +1,9 @@
<!DOCTYPE html>
<html>
</head>
<script src="../bower_components/yjs/y.js"></script>
<script src="../bower_components/jquery/dist/jquery.min.js"></script>
<!-- jquery is not required for y-xml. It is just here for convenience, and to test batch operations. -->
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="../yjs-dist.js"></script>
<script src="./index.js"></script>
</head>
<body>

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@ -7,6 +7,8 @@ Y({
},
connector: {
name: 'websockets-client',
// url: 'http://127.0.0.1:1234',
url: 'http://192.168.178.81:1234',
room: 'Xml-example'
},
sourceDir: '/bower_components',

12
examples/yjs-dist.esm Normal file
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@ -0,0 +1,12 @@
import Y from '../src/y.js'
import yArray from '../../y-array/src/y-array.js'
import yMap from '../../y-map/src/Map.js'
import yText from '../../y-text/src/Text.js'
import yXml from '../../y-xml/src/y-xml.js'
import yMemory from '../../y-memory/src/y-memory.js'
import yWebsocketsClient from '../../y-websockets-client/src/y-websockets-client.js'
Y.extend(yArray, yMap, yText, yXml, yMemory, yWebsocketsClient)
export default Y

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@ -10,6 +10,7 @@
"debug": "concurrently 'rollup -wc rollup.test.js' 'cutest-serve y.test.js -o'",
"lint": "standard",
"dist": "rollup -c rollup.browser.js; rollup -c rollup.node.js",
"watch": "concurrently 'rollup -wc rollup.browser.js' 'rollup -wc rollup.node.js'",
"postversion": "npm run dist",
"postpublish": "tag-dist-files --overwrite-existing-tag"
},

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@ -3,7 +3,7 @@ import commonjs from 'rollup-plugin-commonjs'
import multiEntry from 'rollup-plugin-multi-entry'
export default {
entry: 'test/*',
entry: 'test/y-xml.tests.js',
moduleName: 'y-tests',
format: 'umd',
plugins: [

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@ -588,7 +588,7 @@ export default function extendDatabase (Y /* :any */) {
createType (typedefinition, id) {
var structname = typedefinition[0].struct
id = id || this.getNextOpId(1)
var op = Y.Struct[structname].create(id)
var op = Y.Struct[structname].create(id, typedefinition[1])
op.type = typedefinition[0].name
this.requestTransaction(function * () {

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@ -863,7 +863,12 @@ export default function extendTransaction (Y) {
var comp = id[1].split('_')
if (comp.length > 1) {
var struct = comp[0]
var op = Y.Struct[struct].create(id)
let type = Y[comp[1]]
let args = null
if (type != null) {
args = Y.utils.parseTypeDefinition(type, comp[3])
}
var op = Y.Struct[struct].create(id, args)
op.type = comp[1]
yield * this.setOperation(op)
return op

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@ -840,4 +840,17 @@ export default function Utils (Y) {
}
}
Y.utils.generateUserId = generateUserId
Y.utils.parseTypeDefinition = function parseTypeDefinition (type, typeArgs) {
var args = []
try {
args = JSON.parse('[' + typeArgs + ']')
} catch (e) {
throw new Error('Was not able to parse type definition!')
}
if (type.typeDefinition.parseArguments != null) {
args = type.typeDefinition.parseArguments(args[0])[1]
}
return args
}
}

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@ -176,23 +176,15 @@ class YConfig extends Y.utils.NamedEventHandler {
// create shared object
for (var propertyname in opts.share) {
var typeConstructor = opts.share[propertyname].split('(')
let typeArgs = ''
if (typeConstructor.length === 2) {
typeArgs = typeConstructor[1].split(')')[0] || ''
}
var typeName = typeConstructor.splice(0, 1)
var type = Y[typeName]
var typedef = type.typeDefinition
var id = [0xFFFFFF, typedef.struct + '_' + typeName + '_' + propertyname + '_' + typeConstructor]
var args = []
if (typeConstructor.length === 1) {
try {
args = JSON.parse('[' + typeConstructor[0].split(')')[0] + ']')
} catch (e) {
throw new Error('Was not able to parse type definition! (share.' + propertyname + ')')
}
if (type.typeDefinition.parseArguments == null) {
throw new Error(typeName + ' does not expect arguments!')
} else {
args = typedef.parseArguments(args[0])[1]
}
}
var id = [0xFFFFFF, typedef.struct + '_' + typeName + '_' + propertyname + '_' + typeArgs]
let args = Y.utils.parseTypeDefinition(type, typeArgs)
share[propertyname] = yield * this.store.initType.call(this, id, args)
}
})

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@ -163,30 +163,6 @@ test('encode/decode List operations', async function binList (t) {
id: [100, 33],
type: 'Array'
})
t.log('info is an object')
testEncoding(t, writeList, readList, {
struct: 'List',
id: [100, 33],
type: 'Array',
info: { prop: 'yay' }
})
t.log('info is a string')
testEncoding(t, writeList, readList, {
struct: 'List',
id: [100, 33],
type: 'Array',
info: 'hi'
})
t.log('info is a number')
testEncoding(t, writeList, readList, {
struct: 'List',
id: [100, 33],
type: 'Array',
info: 400
})
})
const writeMap = Y.Struct.Map.binaryEncode
@ -199,31 +175,4 @@ test('encode/decode Map operations', async function binMap (t) {
type: 'Map',
map: {}
})
t.log('info is an object')
testEncoding(t, writeMap, readMap, {
struct: 'Map',
id: [100, 33],
type: 'Map',
info: { prop: 'yay' },
map: {}
})
t.log('info is a string')
testEncoding(t, writeMap, readMap, {
struct: 'Map',
id: [100, 33],
type: 'Map',
map: {},
info: 'hi'
})
t.log('info is a number')
testEncoding(t, writeMap, readMap, {
struct: 'Map',
id: [100, 33],
type: 'Map',
map: {},
info: 400
})
})

288
test/y-xml.tests.js Normal file
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@ -0,0 +1,288 @@
import { wait, initArrays, compareUsers, Y, flushAll, garbageCollectUsers, applyRandomTests } from '../../yjs/tests-lib/helper.js'
import { test, proxyConsole } from 'cutest'
test('set property', async function xml0 (t) {
var { users, xml0, xml1 } = await initArrays(t, { users: 2 })
xml0.setAttribute('height', 10)
t.assert(xml0.getAttribute('height') === 10, 'Simple set+get works')
await flushAll(t, users)
t.assert(xml1.getAttribute('height') === 10, 'Simple set+get works (remote)')
await compareUsers(t, users)
})
test('events', async function xml1 (t) {
var { users, xml0, xml1 } = await initArrays(t, { users: 2 })
var event
var remoteEvent
let expectedEvent
xml0.observe(function (e) {
delete e._content
delete e.nodes
delete e.values
event = e
})
xml1.observe(function (e) {
delete e._content
delete e.nodes
delete e.values
remoteEvent = e
})
xml0.setAttribute('key', 'value')
expectedEvent = {
type: 'attributeChanged',
value: 'value',
name: 'key'
}
t.compare(event, expectedEvent, 'attribute changed event')
await flushAll(t, users)
t.compare(remoteEvent, expectedEvent, 'attribute changed event (remote)')
// check attributeRemoved
xml0.removeAttribute('key')
expectedEvent = {
type: 'attributeRemoved',
name: 'key'
}
t.compare(event, expectedEvent, 'attribute deleted event')
await flushAll(t, users)
t.compare(remoteEvent, expectedEvent, 'attribute deleted event (remote)')
// test childInserted event
expectedEvent = {
type: 'childInserted',
index: 0
}
xml0.insert(0, [Y.XmlText('some text')])
t.compare(event, expectedEvent, 'child inserted event')
await flushAll(t, users)
t.compare(remoteEvent, expectedEvent, 'child inserted event (remote)')
// test childRemoved
xml0.delete(0)
expectedEvent = {
type: 'childRemoved',
index: 0
}
t.compare(event, expectedEvent, 'child deleted event')
await flushAll(t, users)
t.compare(remoteEvent, expectedEvent, 'child deleted event (remote)')
await compareUsers(t, users)
})
test('attribute modifications (y -> dom)', async function xml2 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
xml0.setAttribute('height', '100px')
await wait()
t.assert(dom0.getAttribute('height') === '100px', 'setAttribute')
xml0.removeAttribute('height')
await wait()
t.assert(dom0.getAttribute('height') == null, 'removeAttribute')
xml0.setAttribute('class', 'stuffy stuff')
await wait()
t.assert(dom0.getAttribute('class') === 'stuffy stuff', 'set class attribute')
await compareUsers(t, users)
})
test('attribute modifications (dom -> y)', async function xml3 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
dom0.setAttribute('height', '100px')
await wait()
t.assert(xml0.getAttribute('height') === '100px', 'setAttribute')
dom0.removeAttribute('height')
await wait()
t.assert(xml0.getAttribute('height') == null, 'removeAttribute')
dom0.setAttribute('class', 'stuffy stuff')
await wait()
t.assert(xml0.getAttribute('class') === 'stuffy stuff', 'set class attribute')
await compareUsers(t, users)
})
test('element insert (dom -> y)', async function xml4 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
dom0.insertBefore(document.createTextNode('some text'), null)
dom0.insertBefore(document.createElement('p'), null)
await wait()
t.assert(xml0.get(0).toString() === 'some text', 'Retrieve Text Node')
t.assert(xml0.get(1).nodeName === 'P', 'Retrieve Element node')
await compareUsers(t, users)
})
test('element insert (y -> dom)', async function xml5 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
xml0.insert(0, [Y.XmlText('some text')])
xml0.insert(1, [Y.Xml('p')])
t.assert(dom0.childNodes[0].textContent === 'some text', 'Retrieve Text node')
t.assert(dom0.childNodes[1].nodeName === 'P', 'Retrieve Element node')
await compareUsers(t, users)
})
test('y on insert, then delete (dom -> y)', async function xml6 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
dom0.insertBefore(document.createElement('p'), null)
await wait()
t.assert(xml0.length === 1, 'one node present')
dom0.childNodes[0].remove()
await wait()
t.assert(xml0.length === 0, 'no node present after delete')
await compareUsers(t, users)
})
test('y on insert, then delete (y -> dom)', async function xml7 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
xml0.insert(0, [Y.Xml('p')])
t.assert(dom0.childNodes[0].nodeName === 'P', 'Get inserted element from dom')
xml0.delete(0, 1)
t.assert(dom0.childNodes.length === 0, '#childNodes is empty after delete')
await compareUsers(t, users)
})
test('delete consecutive (1) (Text)', async function xml8 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
xml0.insert(0, ['1', '2', '3'].map(Y.XmlText))
await wait()
xml0.delete(1, 2)
await wait()
t.assert(xml0.length === 1, 'check length (y)')
t.assert(dom0.childNodes.length === 1, 'check length (dom)')
t.assert(dom0.childNodes[0].textContent === '1', 'check content')
await compareUsers(t, users)
})
test('delete consecutive (2) (Text)', async function xml9 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
xml0.insert(0, ['1', '2', '3'].map(Y.XmlText))
await wait()
xml0.delete(0, 1)
xml0.delete(1, 1)
await wait()
t.assert(xml0.length === 1, 'check length (y)')
t.assert(dom0.childNodes.length === 1, 'check length (dom)')
t.assert(dom0.childNodes[0].textContent === '2', 'check content')
await compareUsers(t, users)
})
test('delete consecutive (1) (Element)', async function xml10 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
xml0.insert(0, [Y.Xml('A'), Y.Xml('B'), Y.Xml('C')])
await wait()
xml0.delete(1, 2)
await wait()
t.assert(xml0.length === 1, 'check length (y)')
t.assert(dom0.childNodes.length === 1, 'check length (dom)')
t.assert(dom0.childNodes[0].nodeName === 'A', 'check content')
await compareUsers(t, users)
})
test('delete consecutive (2) (Element)', async function xml11 (t) {
var { users, xml0 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
xml0.insert(0, [Y.Xml('A'), Y.Xml('B'), Y.Xml('C')])
await wait()
xml0.delete(0, 1)
xml0.delete(1, 1)
await wait()
t.assert(xml0.length === 1, 'check length (y)')
t.assert(dom0.childNodes.length === 1, 'check length (dom)')
t.assert(dom0.childNodes[0].nodeName === 'B', 'check content')
await compareUsers(t, users)
})
test('Receive a bunch of elements (with disconnect)', async function xml12 (t) {
var { users, xml0, xml1 } = await initArrays(t, { users: 3 })
let dom0 = xml0.getDom()
let dom1 = xml1.getDom()
users[1].disconnect()
xml0.insert(0, [Y.Xml('A'), Y.Xml('B'), Y.Xml('C')])
xml0.insert(0, [Y.Xml('X'), Y.Xml('Y'), Y.Xml('Z')])
await users[1].reconnect()
await flushAll(t, users)
t.assert(xml0.length === 6, 'check length (y)')
t.assert(xml1.length === 6, 'check length (y) (reconnected user)')
t.assert(dom0.childNodes.length === 6, 'check length (dom)')
t.assert(dom1.childNodes.length === 6, 'check length (dom) (reconnected user)')
await compareUsers(t, users)
})
// TODO: move elements
var xmlTransactions = [
function attributeChange (t, user, chance) {
user.share.xml.getDom().setAttribute(chance.word(), chance.word())
},
function insertText (t, user, chance) {
let dom = user.share.xml.getDom()
var succ = dom.children.length > 0 ? chance.pickone(dom.children) : null
dom.insertBefore(document.createTextNode(chance.word()), succ)
},
function insertDom (t, user, chance) {
let dom = user.share.xml.getDom()
var succ = dom.children.length > 0 ? chance.pickone(dom.children) : null
dom.insertBefore(document.createElement(chance.word()), succ)
},
function deleteChild (t, user, chance) {
let dom = user.share.xml.getDom()
if (dom.childNodes.length > 0) {
var d = chance.pickone(dom.childNodes)
d.remove()
}
},
function insertTextSecondLayer (t, user, chance) {
let dom = user.share.xml.getDom()
if (dom.children.length > 0) {
let dom2 = chance.pickone(dom.children)
let succ = dom2.childNodes.length > 0 ? chance.pickone(dom2.childNodes) : null
dom2.insertBefore(document.createTextNode(chance.word()), succ)
}
},
function insertDomSecondLayer (t, user, chance) {
let dom = user.share.xml.getDom()
if (dom.children.length > 0) {
let dom2 = chance.pickone(dom.children)
let succ = dom2.childNodes.length > 0 ? chance.pickone(dom2.childNodes) : null
dom2.insertBefore(document.createElement(chance.word()), succ)
}
},
function deleteChildSecondLayer (t, user, chance) {
let dom = user.share.xml.getDom()
if (dom.children.length > 0) {
let dom2 = chance.pickone(dom.children)
if (dom2.childNodes.length > 0) {
let d = chance.pickone(dom2.childNodes)
d.remove()
}
}
}
]
test('y-xml: Random tests (10)', async function randomXml10 (t) {
await applyRandomTests(t, xmlTransactions, 10)
})
test('y-xml: Random tests (42)', async function randomXml42 (t) {
await applyRandomTests(t, xmlTransactions, 42)
})
test('y-xml: Random tests (43)', async function randomXml43 (t) {
await applyRandomTests(t, xmlTransactions, 43)
})
test('y-xml: Random tests (44)', async function randomXml44 (t) {
await applyRandomTests(t, xmlTransactions, 44)
})
test('y-xml: Random tests (45)', async function randomXml45 (t) {
await applyRandomTests(t, xmlTransactions, 45)
})
test('y-xml: Random tests (46)', async function randomXml46 (t) {
await applyRandomTests(t, xmlTransactions, 46)
})
test('y-xml: Random tests (47)', async function randomXml47 (t) {
await applyRandomTests(t, xmlTransactions, 47)
})

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@ -3,14 +3,16 @@ import _Y from '../../yjs/src/y.js'
import yMemory from '../../y-memory/src/y-memory.js'
import yArray from '../../y-array/src/y-array.js'
import yText from '../../y-text/src/Text.js'
import yMap from '../../y-map/src/Map.js'
import yXml from '../../y-xml/src/y-xml.js'
import yTest from './test-connector.js'
import Chance from 'chance'
export let Y = _Y
Y.extend(yMemory, yArray, yMap, yTest)
Y.extend(yMemory, yArray, yText, yMap, yTest, yXml)
export var database = { name: 'memory' }
export var connector = { name: 'test', url: 'http://localhost:1234' }
@ -47,6 +49,31 @@ export async function garbageCollectUsers (t, users) {
await Promise.all(users.map(u => u.db.emptyGarbageCollector()))
}
export function attrsToObject (attrs) {
let obj = {}
for (var i = 0; i < attrs.length; i++) {
let attr = attrs[i]
obj[attr.name] = attr.value
}
return obj
}
export function domToJson (dom) {
if (dom.nodeType === document.TEXT_NODE) {
return dom.textContent
} else if (dom.nodeType === document.ELEMENT_NODE) {
let attributes = attrsToObject(dom.attributes)
let children = Array.from(dom.childNodes.values()).map(domToJson)
return {
name: dom.nodeName,
children: children,
attributes: attributes
}
} else {
throw new Error('Unsupported node type')
}
}
/*
* 1. reconnect and flush all
* 2. user 0 gc
@ -73,6 +100,7 @@ export async function compareUsers (t, users) {
}
var userMapOneValues = users.map(u => u.share.map.get('one')).map(valueToComparable)
var userMapTwoValues = users.map(u => u.share.map.get('two')).map(valueToComparable)
var userXmlValues = users.map(u => u.share.xml.getDom()).map(domToJson)
await users[0].db.garbageCollect()
await users[0].db.garbageCollect()
@ -133,6 +161,7 @@ export async function compareUsers (t, users) {
t.compare(userArrayValues[i], userArrayValues[i + 1], 'array types')
t.compare(userMapOneValues[i], userMapOneValues[i + 1], 'map types (propery "one")')
t.compare(userMapTwoValues[i], userMapTwoValues[i + 1], 'map types (propery "two")')
t.compare(userXmlValues[i], userXmlValues[i + 1], 'xml types')
t.compare(data[i].os, data[i + 1].os, 'os')
t.compare(data[i].ds, data[i + 1].ds, 'ds')
t.compare(data[i].ss, data[i + 1].ss, 'ss')
@ -147,7 +176,7 @@ export async function initArrays (t, opts) {
var result = {
users: []
}
var share = Object.assign({ flushHelper: 'Map', array: 'Array', map: 'Map' }, opts.share)
var share = Object.assign({ flushHelper: 'Map', array: 'Array', map: 'Map', xml: 'Xml("div")' }, opts.share)
var chance = opts.chance || new Chance(t.getSeed() * 1000000000)
var conn = Object.assign({ room: 'debugging_' + t.name, generateUserId: false, testContext: t, chance }, connector)
for (let i = 0; i < opts.users; i++) {