KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use prototypeChain method in wpt

Best JavaScript code snippet using wpt

program.js

Source:program.js

1Function.prototype.method = function(name, func) {2	this.prototype[name] = func;3	return this;4};5document.writeln('Hello world!');6document.writeln('hello');7var hello = {8	"" : "hello1"9};10document.writeln(hello[""]);11//objects by reference trial12var trial = {13	x : 'hello'14}15var reference1 = trial;16reference1.x = 'bye-bey';17document.writeln(trial.x);18//creating a new non function object19//beget20//adding a method to Object.prootype makes it available to all objects21if(typeof Object.beget !== 'function'){22	Object.beget = function(o) {23	var F = function () {};24	F.prototype = o;25	return new F();26};27}28var reference2 = Object.beget(trial);29reference2.x = 'hello again';30document.writeln(reference2.x);31document.writeln(trial.x);32//trial.x was changed to bye-bey in the reference experiment33var prototypeChain = Object.beget(reference2);34prototypeChain.hello= "xl";35prototypeChain.next= "lksjdf";36//hasOwnProperty returns true if the object has a property but doesn't look up the prototype chain37console.log(prototypeChain.hasOwnProperty('x'));38console.log(prototypeChain.hasOwnProperty('hello'));39//for variable in property looks up the prototype chain so use hasOwnproperty40var name;41for(name in prototypeChain){42	document.writeln(name + ':' + prototypeChain[name]);43}44//Inner function pattern this = that.  when a function is invoked it's this is bound to the global object not as the variable of the function.  Because of this the function cannot employ an inner function to do it's work as it doesn't have access to the same this.45//so we create a variable that to equal this that the inner funciton uses to access the outer variable.  46//ex:47//using this without the knowledge of this being bounded to the global variable48var myObject = {49	value: 0,50	increment: function(inc){51		this.value += typeof inc === 'number' ? inc : 1;52	}53};54myObject.double = function () {55	console.log(this.value);//produces 256	var helper = function(){57		this.value = this.value+ this.value;58		console.log(this.value); //produces NaN59	};60	helper(); //invoke helper.61};62myObject.increment(2);63document.writeln(myObject.value);64myObject.double();65document.writeln(myObject.value);66//now using workaround67myObject.double = function () {68	var that = this;69	var helper = function(){70		that.value = that.value + that.value;71		console.log(that.value);72		//^produces four73	};74	helper();75};76myObject.double();77document.writeln(myObject.value); //produces four78var add = function (a,b) {79	return a+b;80};81//constructor inocation pattern (not recommended for use)82var Quo = function (string) {83	this.status = string;84};85//get status86Quo.prototype.get_status = function () {87	return this.status;88};89//Make an instance of Quo90var myQuo = new Quo("confused");91document.writeln(myQuo.get_status());92//apply invocation pattern93//array of two numbers and add94var array = [3,4];95//apply takes two parameters.  first paramenter is the value bound to "this".  second one is parameter is an array of parameters the function takes96var sum = add.apply(null, array);97console.log(sum);98var statusObject = {99	status: 'A-OK'100};101//statusObject does not inherity from Quo.prototype.  Howver usuig the apply invocation pattern we can use the get_status method and apply it on status Object102var status = Quo.prototype.get_status.apply(statusObject);103//in the above the "this" references the status object104console.log(status);105//arguments parameter: allows you write parameters with an unspecified number of parameters. Not useful according to crockford.106var sum = function() {107	var i, sum =0;108	for(i = 0; i < arguments.length; i += 1){109		sum += arguments[i];110	}111	return sum;112};113document.writeln(sum(4,8,15,16,23,42));114//exceptions mechanism115var add = function(a, b) {116	if(typeof a !== 'number' || typeof b !== 'number'){117		throw {118			name: 'TypeError',119			message: 'add needs numbers'120		};121	}122	return a + b;123}124//name gives identity of error125//message is the description126//try catch object:127var try_it = function () {128	try {129		add("seven");130	} catch(e) {131		document.writeln(e.name + ':' + e.message);132	}133}...

prototype_chain_test.js

Source:prototype_chain_test.js

1import { PrototypeChain } from 'lib/meta'2import { last } from 'lodash'3import { isEqual as match_array } from 'lodash'4import { head as first } from 'lodash'5class ParentClass {}6class ChildClass extends ParentClass {}7describe('PrototypeChain', () => {8  it('exists as a class', () => {9    expect(PrototypeChain).to.exist10    expect(PrototypeChain).to.be.a('function')11  })12  describe('#constructor', () => {13    it('returns an array', () => {14      const chain = new PrototypeChain(ParentClass)15      expect(chain).to.be.a('array')16    })17    it('can be called statically', () => {18      expect(() => PrototypeChain.new(ParentClass)).to.not.throw(Error)19    })20    it('returns the same thing when called statically', () => {21      const chain_a = new PrototypeChain(ParentClass)22      const chain_b = PrototypeChain.new(ParentClass)23      expect(match_array(chain_a, chain_b)).to.eq(true)24    })25  })26  describe('returned chain', () => {27    it('stops at null', () => {28      const parent_chain = new PrototypeChain(ParentClass)29      const child_chain = new PrototypeChain(ChildClass)30      expect(last(parent_chain)).to.eq(null)31      expect(last(child_chain)).to.eq(null)32    })33    it('is one longer for a child class', () => {34      const parent_chain = new PrototypeChain(ParentClass)35      const child_chain = new PrototypeChain(ChildClass)36      expect(child_chain.length).to.eq(parent_chain.length + 1)37    })38    it('contains the parent class if a subclass', () => {39      const child_chain = new PrototypeChain(ChildClass)40      expect(child_chain).to.include(ParentClass)41    })42  })43  describe('compatability with native types:', () => {44    compatable_with(Array)45    compatable_with(Boolean)46    compatable_with(Function)47    compatable_with(Int8Array)48    compatable_with(Int16Array)49    compatable_with(Int32Array)50    compatable_with(Float32Array)51    compatable_with(Float64Array)52    compatable_with(JSON)53    compatable_with(Map)54    compatable_with(Number)55    compatable_with(Object)56    compatable_with(Proxy)57    compatable_with(Set)58    compatable_with(String)59    compatable_with(Symbol)60    compatable_with(Uint8Array)61    compatable_with(Uint16Array)62    compatable_with(Uint32Array)63    compatable_with(Uint8ClampedArray)64    compatable_with(WeakMap)65    compatable_with(WeakSet)66    compatable_with(null)67  })68  function compatable_with(klass) {69    it(`doesnt throw on ${klass}`, () => {70      expect(() => new PrototypeChain(klass)).to.not.throw(Error)71    })72    it(`returns an array for a ${klass}`, () => {73      const chain = new PrototypeChain(klass)74      expect(chain).to.be.a('array')75    })76    it('has null as the last item in the chain', () => {77      const chain = new PrototypeChain(klass)78      expect(last(chain)).to.eq(null)79    })80    it(`has ${klass} as first item in the chain`, () => {81      const chain = new PrototypeChain(klass)82      expect(first(chain)).to.eq(klass)83    })84  }...

http.js

Source:http.js

1const http = require('http')2const fs = require('fs')3http.createServer((request, response) => {4    // console.log('request', getPrototypeChain(request))5    // console.log('response', getPrototypeChain(response))6    // response.end('hello world')7    let {url, method, headers} = request8    if (url === '/' && method === 'GET') {9        fs.readFile('./index.html', (err, data) => {10            if (err) {11                console.log(err)12                response.writeHead(500, {'Content-type': 'text-plain;charset=utf-8'})13                response.end('500 æå¡å¨éè¯¯')14            } else {15                response.statusCode = 20016                response.setHeader('Content-type', 'text/html;charset=utf-8')17                response.end(data)18            }19        })20    } else if (method === 'GET' && url === '/users') {21        response.writeHead(200, {'Content-type': 'application/json'})22        response.end(JSON.stringify([{name: 1111}]))23    }else if(method === 'GET' && headers.accept.indexOf('image/*') > -1) {24        fs.createReadStream('.' + url).pipe(response)25    }26}).listen(3000)27function getPrototypeChain(obj) {28    const prototypeChain = []29    while (obj = Object.getPrototypeOf(obj)) {30        prototypeChain.push(Object.getPrototypeOf(obj))31    }32    prototypeChain.push(null);33    return prototypeChain;...

Using AI Code Generation

1var wpt = require('wpt.js');2var wpt = new WebPageTest('www.webpagetest.org');3wpt.getLocations(function(err, data) {4    if (err) return console.error(err);5    console.log(data);6});7var wpt = require('wpt.js');8var wpt = new WebPageTest('www.webpagetest.org');9    if (err) return console.error(err);10    console.log(data);11});12var wpt = require('wpt.js');13var wpt = new WebPageTest('www.webpagetest.org');14var options = {15    videoParams: {16    }17};18    if (err) return console.error(err);19    console.log(data);20});21var wpt = require('wpt.js');22var wpt = new WebPageTest('www.webpagetest.org');23wpt.getTestResults('140925_6C_7d7a0a8e7f2a9a9a7a5b5c5d5e5f5g5h5i5j5k5l5m5n5o5p5q5r5s5t5u5v5w5x5y5z5a5b5c5d5e5f5g5h5i5j5k5l5m5n5o5p5q5r5s5t5u5v5w5x5y5z5a5b5c5d5e5f5g5h5i5

Using AI Code Generation

1var obj = {a: 1};2var obj2 = Object.create(obj);3obj2.b = 2;4var obj3 = Object.create(obj2);5obj3.c = 3;6var obj4 = Object.create(obj3);7obj4.d = 4;8var obj5 = Object.create(obj4);9obj5.e = 5;10var obj6 = Object.create(obj5);11obj6.f = 6;12var obj7 = Object.create(obj6);13obj7.g = 7;14var obj8 = Object.create(obj7);15obj8.h = 8;16var obj9 = Object.create(obj8);17obj9.i = 9;18var obj10 = Object.create(obj9);19obj10.j = 10;20var obj11 = Object.create(obj10);21obj11.k = 11;22var obj12 = Object.create(obj11);23obj12.l = 12;24var obj13 = Object.create(obj12);25obj13.m = 13;26var obj14 = Object.create(obj13);27obj14.n = 14;28var obj15 = Object.create(obj14);29obj15.o = 15;30var obj16 = Object.create(obj15);31obj16.p = 16;32var obj17 = Object.create(obj16);33obj17.q = 17;34var obj18 = Object.create(obj17);35obj18.r = 18;36var obj19 = Object.create(obj18);37obj19.s = 19;38var obj20 = Object.create(obj19);39obj20.t = 20;40var obj21 = Object.create(obj20);41obj21.u = 21;42var obj22 = Object.create(obj21);43obj22.v = 22;44var obj23 = Object.create(obj22);45obj23.w = 23;46var obj24 = Object.create(obj23);47obj24.x = 24;48var obj25 = Object.create(obj24);49obj25.y = 25;50var obj26 = Object.create(obj25);51obj26.z = 26;52var obj27 = Object.create(obj26);53obj27.aa = 27;54var obj28 = Object.create(obj27);55obj28.ab = 28;56var obj29 = Object.create(obj28);57obj29.ac = 29;58var obj30 = Object.create(obj29);59obj30.ad = 30;60var obj31 = Object.create(obj30);61obj31.ae = 31;62var obj32 = Object.create(obj

Using AI Code Generation

1var wpt = require('wpt.js');2var wpt = new WebPageTest('www.webpagetest.org');3wpt.getTestResults('150904_9P_2e6e7a1e2c2f8e6c5f6d7b1c5a2f8d3e', function(err, data) {4  console.log(data.data.average.firstView.SpeedIndex);5});6var wpt = require('wpt.js');7var wpt = new WebPageTest('www.webpagetest.org');8wpt.getTestResults('150904_9P_2e6e7a1e2c2f8e6c5f6d7b1c5a2f8d3e')9  .then(function(data) {10    console.log(data.data.average.firstView.SpeedIndex);11  })12  .catch(function(err) {13    console.log(err);14  });15var wpt = require('wpt.js');16var wpt = new WebPageTest('www.webpagetest.org');17wpt.getTestResults('150904_9P_2e6e7a1e2c2f8e6c5f6d7b1c5a2f8d3e', function(err, data) {18  console.log(data.data.average.firstView.SpeedIndex);19});20var wpt = require('wpt.js');21var wpt = new WebPageTest('www.webpagetest.org');22wpt.getLocations(function(err, data) {23  console.log(data);24});25var wpt = require('wpt.js');26var wpt = new WebPageTest('www.webpagetest.org');27wpt.getLocations()28  .then(function(data) {29    console.log(data);30  })31  .catch(function(err) {32    console.log(err);33  });34var wpt = require('wpt.js');35var wpt = new WebPageTest('www.webpagetest.org');36wpt.getLocations(function(err,

Using AI Code Generation

1var wpt = require('webpagetest');2var options = {3};4var test = new wpt('www.webpagetest.org', options.key);5test.runTest(options.url, options, function(err, data) {6    if (err) return console.error(err);7    test.getTestResults(data.data.testId, function(err, data) {8        if (err) return console.error(err);9        console.log(data.data.runs[1].firstView);10    });11});

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.