如果我使用TestCafe在pm2下运行我的应用程序，则如果Testcafe脚本使用FS操作，pm2总是崩溃。
async function unlinkFiles () {
if(fs.existsSync(downloadsFolder()+'/export.xml')){
fs.unlinkSync(downloadsFolder()+'/export.xml');
}
if(fs.existsSync(downloadsFolder()+'/export.json')){
fs.unlinkSync(downloadsFolder()+'/export.json');
}
return true;
}
如果我注释掉此fs操作pm2不会在此位置崩溃，而是稍后崩溃。因此，每次我在pm2下的TestCafe脚本中使用FS操作时，pm2都会崩溃。这是已知问题吗？
我的脚本：
import { Selector,ClientFunction } from 'testcafe';
import fs from "fs";
import downloadsFolder from "downloads-folder";
import xpath from 'xpath';
import jp from 'jsonpath';
import {DOMParser} from 'xmldom';
fixture `SMTest 1-11-2019 (23:31:12)`
const getStyleWidthInPercents = ClientFunction(() => {
var calVar = Math.min(100,parseInt(document.querySelector('.progress-bar.progress-bar-success').style.width)) + '%';
return calVar;
});
const compareValues = ClientFunction(test1 => {
const enumVar = document.querySelector(test1).innerHTML;
return enumVar;
});
test
.httpAuth({
username: 'xxx',password: 'xxx'
})
('RV_mvK22',async t => {
console.log('tcafeprogress:0');
await t
.navigateTo("xxx")
.resizeWindow(1280,720)
async function unlinkFiles () {
if(fs.existsSync(downloadsFolder()+'/export.xml')){
fs.unlinkSync(downloadsFolder()+'/export.xml');
}
if(fs.existsSync(downloadsFolder()+'/export.json')){
fs.unlinkSync(downloadsFolder()+'/export.json');
}
return true;
}
console.log('tcafeprogress:5');
await t
.expect(await unlinkFiles()).ok()
await t
.wait(2000)
.click(Selector('a').withText('Regelwerk'))
//.typeText(Selector('#settingsTable_filter').find('.form-control.input-sm'),'tcafe')
//.wait(2000)
.click(Selector('button').withText('Upload'))
console.log('tcafeprogress:10');
await t
.setfilesToUpload(Selector('#fileupload'),['./uploads/RV_mvk2.xml'])
.wait(2000)
//Cheap Developed UI with Workaround here
await t
.expect(getStyleWidthInPercents()).eql('100%',{timeout: 90000})
console.log('tcafeprogress:20');
await t
.wait(2000)
.click(Selector('.btn.btn-secondary.close-button[data-dismiss="modal"]'))
.wait(2000)
//Upload success,now search and create XML
.typeText(Selector('#settingsTable_filter').find('.form-control.input-sm'),'RV_mvk2.xml')
.wait(2000)
//.debug()
.click(Selector('button').withText('Erstellen'))
console.log('tcafeprogress:30');
//Prüfen ob das Fenster zu geht,wenn nicht dann abbrechen.
//Vielleicht die ID Exists?
await t
.expect(Selector('#ContainerId').exists).ok('War wohl nicht erfolgreich',{ timeout: 300000 })
const korpusid = await Selector('#ContainerId').innerText;
console.log('tcafeprogress:40');
//If fail,please note that the report will always report one step more.
const value0 = await Selector('#KH').value
await t
.expect(compareValues('#KH_value')).eql(value0,'Wertvergleich fehlgeschlagen',{timeout: 40000})
const value1 = await Selector('#KB').value
await t
.expect(compareValues('#KB_value')).eql(value1,{timeout: 40000})
const value2 = await Selector('#KT').value
await t
.expect(compareValues('#KT_value')).eql(value2,{timeout: 40000})
const value3 = await Selector('#Plattendicke').value
await t
.expect(compareValues('#Plattendicke_value')).eql(value3,{timeout: 40000})
const value4 = await Selector('#Schiene_Size_x').value
await t
.expect(compareValues('#Size_x_value')).eql(value4,{timeout: 40000})
.wait(2000)
console.log('tcafeprogress:50');
//XML DOWNLOAD
await t
.click(Selector('button').withText('Aktionen'))
.click(Selector('a').withText('Xml Exportieren'));
await t
.wait(6000)
await t .expect(fs.existsSync(downloadsFolder()+'/export.xml')).ok()
//JSON DOWNLOAD
await t
.click(Selector('button').withText('Aktionen'))
.click(Selector('a').withText('Preis Exportieren'))
await t
.wait(6000)
await t.expect(fs.existsSync(downloadsFolder()+'/export.json')).ok()
console.log('tcafeprogress:70');
//Nun müssten das XML öffnen und XPATH lesen.
async function getXMLInfo (path,attr) {
var xml = fs.readFileSync(downloadsFolder()+'/export.xml','utf8').toString();
var doc = new DOMParser().parseFromString(xml);
var enumeration = '';
if(attr===true){
enumeration = xpath.select1(path,doc).value;
}else{
enumeration = xpath.select(path,doc);
}
var noXML = enumeration.toString();
noXML = noXML.replace(/\n| | /g,' ');
noXML = noXML.replace(/ {1,}/g,' ');
console.log(noXML);
return noXML;
}
await t
.expect(await getXMLInfo('//CCSYSTEMCABINETID[1]/text()[1]',false)).eql(korpusid,'XML Wertvergleich fehlgeschlagen',{timeout: 40000})
await t
.expect(await getXMLInfo('//CabinetPart[@id=\'ID0001\'][1]/@name',true)).eql('Unterboden',{timeout: 40000})
await t
.expect(await getXMLInfo('//ExternalPart[1]/@identifier',true)).eql('schiene_xyz',{timeout: 40000})
await t
.expect(await getXMLInfo('//ExternalPart[1]/@length',true)).eql('1000',{timeout: 40000})
await t
.expect(await getXMLInfo('//point[4]/@coordinate',true)).eql('1200 23 0',{timeout: 40000})
console.log('tcafeprogress:80');
async function getJSONInfo (path) {
var xml = fs.readFileSync(downloadsFolder()+'/export.json','utf8').toString();
if(path==='$..*'){
console.log("Alles");
return xml;
}
var enumeration = jp.query(JSON.parse(xml),path);
console.log(enumeration.toString());
return enumeration.toString();
}
await t
.expect(await getJSONInfo('$..CumulatedList[1].Name')).eql('schiene_xyz','JSON Wertvergleich fehlgeschlagen',{timeout: 40000})
console.log('tcafeprogress:100');
});
PM2因报告而崩溃。我不知道为什么显示JSON错误，因为此步骤没有JSON函数。通过使用try and error调试代码，我能够将问题减少到node fs操作。
