How to use sortMap method in Jest

Best JavaScript code snippet using jest

resultEvaluation1.js

Source:resultEvaluation1.js Github

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1$(function() {2 // 1.初始化Table3 var oTable = new TableInit();4 oTable.Init();5 // 2.初始化Button的点击事件6 var oButtonInit = new ButtonInit();7 oButtonInit.Init();8});9//10var TableInit = function() {11 var oTableInit = new Object();12 // 初始化Table13 oTableInit.Init = function() {14 $('#table')15 .bootstrapTable(16 {17 url : 'findResultTable1.action', // 请求后台的URL（*）18 method : 'post', // 请求方式（*）19 contentType : "application/x-www-form-urlencoded; charset=UTF-8",20 dataType : "json", // 数据类型21 toolbar : '#toolbar', // 工具按钮用哪个容器22 striped : true, // 是否显示行间隔色23 cache : false, // 是否使用缓存，默认为true，所以一般情况下需要设置一下这个属性（*）24 pagination : true, // 是否显示分页（*）25 sortable : true, // 是否启用排序26 sortOrder : "asc", // 排序方式27 queryParamsType : 'limit',28 queryParams : oTableInit.queryParams, // 传递参数（*）29 sidePagination : "server", // 分页方式：client客户端分页，server服务端分页（*）30 pageNumber : 1, // 初始化加载第一页，默认第一页31 pageSize : 10, // 每页的记录行数（*）32 pageList: [10, 20, 50], // 可供选择的每页的行数（*）33 search : false, // 是否显示表格搜索，此搜索是客户端搜索，不会进服务端，所以，个人感觉意义不大34 strictSearch : false, // 启用全匹配搜索，否则为模糊搜索35 searchOnEnterKey : false, // 按回车触发搜索方法，否则自动触发搜索方法36 showColumns : true, // 是否显示所有的列37 showRefresh : true, // 是否显示刷新按钮38 minimumCountColumns : 2, // 最少允许的列数39 clickToSelect : true, // 是否启用点击选中行40 // height: 500, //行高，如果没有设置height属性，表格自动根据记录条数觉得表格高度41 uniqueId : "", // 每一行的唯一标识，一般为主键列42 showToggle : true, // 是否显示详细视图和列表视图的切换按钮43 cardView : false, // 是否显示详细视图44 detailView : false, // 是否显示父子表45 showExport : true, // 是否显示导出按钮46 // exportDataType : "selected", //basic'导出当前页,47 // 'all'导出全部, 'selected'导出选中项.48 buttonsAlign : "right", // 按钮位置49 // exportTypes:['excel','xlsx'], //导出文件类型50 exportTypes : [ 'excel' ],51 Icons : 'glyphicon-export',52 exportOptions : {53 // ignoreColumn : [ 0, 0 ], // 忽略某一列的索引54 fileName : '数据导出', // 文件名称设置55 worksheetName : 'sheet1', // 表格工作区名称56 tableName : '总体评价结果建议表',57 excelstyles : [ 'background-color', 'color',58 'font-size', 'font-weight' ],59 /* onMsoNumberFormat: DoOnMsoNumberFormat */60 },61 columns : [62 // {63 // //是否显示复选框64 // field : 'Number',65 // title : '序号',66 // align: 'center',67 // width: 50,68 // formatter : function(value, row, index) {69 // //return index + 1;70 // var pageSize = $('#table').bootstrapTable('getOptions').pageSize;//通过表的#id 可以得到每页多少条71 // var pageNumber = $('#table').bootstrapTable('getOptions').pageNumber;//通过表的#id 可以得到当前第几页72 // return pageSize * (pageNumber - 1) + index + 1;//返回每条的序号： 每页条数 * （当前页 - 1 ）+ 序号73 // }},74 {title: '评价分类', field: 'type'},75 {title: '评价项目', field: 'project'},76 {title: '意见和建议', field: 'suggestResult'}77 ],78 onLoadSuccess : function(data) {79 var data = $('#table').bootstrapTable('getData', true);80 mergeTable(data,'type',1, $('#table'));//行合并81 // mergeTable1(data,'project',1, $('#table'));//行合并82 },83 onLoadError : function() {84 layer.msg("数据加载失败！");85 },86 // 注册加载子表的事件。注意下这里的三个参数！87 onExpandRow : function(index, row, $detail) {88 oInit.InitSubTable(index, row, $detail);89 },90 });91 };92 //得到查询的参数93 oTableInit.queryParams = function (params) {94 var temp = { //这里的键的名字和控制器的变量名必须一直，这边改动，控制器也需要改成一样的95 pageSize: params.limit, //页面大小96 pageNumber : params.offset/params.limit+1, //当前页面,默认是上面设置的1(pageNumber)97 classId:$("#classId").val()98 };99 return temp;100 };101 return oTableInit;102};103var ButtonInit = function() {104 var oInit = new Object();105 oInit.Init = function() {106 // 初始化页面上面的按钮事件107 };108 return oInit;109};110/**111 * 合并单元格112 * @param data 原始数据（在服务端完成排序）113 * @param fieldName 合并属性名称114 * @param colspan 合并列115 * @param target 目标表格对象116 */117function mergeTable(data,fieldName,colspan,target){118 //声明一个map计算相同属性值在data对象出现的次数和119 var sortMap = {};120 for(var i = 0 ; i < data.length ; i++){121 for(var prop in data[i]){122 if(prop == fieldName){123 var key = data[i][prop]124 if(sortMap.hasOwnProperty(key)){125 sortMap[key] = sortMap[key] * 1 + 1;126 } else {127 sortMap[key] = 1;128 }129 break;130 }131 }132 }133 for(var prop in sortMap){134 // console.log(prop,sortMap[prop])135 }136 var index = 0;137 for(var prop in sortMap){138 var count = sortMap[prop] * 1;139 $(target).bootstrapTable('mergeCells',{index:index, field:'type', colspan: colspan, rowspan: count});140 index += count;141 }142}143// function mergeTable1(data,fieldName,colspan,target){144// //声明一个map计算相同属性值在data对象出现的次数和145// var sortMap = {};146// for(var i = 0 ; i < data.length ; i++){147// for(var prop in data[i]){148// if(prop == fieldName){149// var key = data[i][prop]150// if(sortMap.hasOwnProperty(key)){151// sortMap[key] = sortMap[key] * 1 + 1;152// } else {153// sortMap[key] = 1;154// }155// break;156// }157// }158// }159// for(var prop in sortMap){160// // console.log(prop,sortMap[prop])161// }162// var index = 0;163// for(var prop in sortMap){164// var count = sortMap[prop] * 1;165// $(target).bootstrapTable('mergeCells',{index:index, field:'project', colspan: colspan, rowspan: count});166// index += count;167// }...

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pipes.js

Source:pipes.js Github

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1const { paginatedMetaExpression, queryDateExpression, parseQueryDate, parseQuerySort } = require('./helpers');2// aggregation pipes3/**4 * pull-pipeline stage 1: matching rules5 * @param {string} collection - MongoDB collection name6 * @param {object} params - express.js param object7 * @param {object} query - express.js query object8 * @return {{$match}}9 */10const pullPipe_1_matching = (collection, params, query) => {11 const $match = params.search ? { $text: { $search: params.search } } : {};12 const _$$date = query.date ? queryDateExpression(...parseQueryDate(query.date)) : null; // tofix: query time zone problem13 if (_$$date) $match['time._created'] = _$$date;14 if (['posts', 'media', 'page'].includes(collection)) {15 $match['time._recycled'] = (params.collection && query.access === 'bin') ? { $ne: null } : { $eq: null };16 if (!params.collection) $match['state.published'] = true;17 if (!params.collection) $match['state.hidden'] = false;18 }19 return { $match };20};21/**22 * pull-pipeline stage 2: fields masking23 * @param {object} params - express.js param object24 * @return {{$project}}25 */26const pullPipe_2_masking = (params) => {27 const $project = {};28 const mask = ['content'];29 if (params.collection) mask.push('featured');30 for (let i = mask.length - 1; i > -1; i -= 1) $project[mask[i]] = 0;31 return { $project };32};33/**34 * pull-pipeline stage 3: fields sorting35 * @param {object} query - express.js query object36 * @param {object} [sort] - preset sorting configurations37 * @return {{$project}}38 */39const pullPipe_3_sorting = (query, sort = {}) => {40 const $sort = { 'state.pinned': -1, 'time._updated': -1, ...sort };41 const sortMap = new Map();42 Object.keys(query)43 .filter(key => ['sort', 'sort:a', 'sort:d'].includes(key))44 .forEach(rule => parseQuerySort(query[rule], rule).forEach(pair => sortMap.set(...pair)));45 //46 if (sortMap.has('pin')) $sort['state.pinned'] = sortMap.get('pin');47 if (sortMap.has('time')) $sort['time._updated'] = sortMap.get('time');48 if (sortMap.has('update')) $sort['time._updated'] = sortMap.get('update');49 if (sortMap.has('post')) $sort['time._created'] = sortMap.get('post');50 if (sortMap.has('author')) $sort['author.nickname'] = sortMap.get('author');51 if (sortMap.has('title')) $sort.title = sortMap.get('title');52 if (sortMap.has('category')) $sort.category = sortMap.get('category');53 if (sortMap.has('tags')) $sort.tags = sortMap.get('tags');54 if (sortMap.has('revise')) $sort._revised = sortMap.get('revise');55 return { $sort };56};57/**58 * pull-pipeline stage 4: grouping with document counting59 * @return {{$group}}60 */61const pullPipe_4_grouping = () => {62 const $group = { _id: null, count: { $sum: 1 }, list: { $push: '$$ROOT' } };63 return { $group };64};65/**66 * pull-pipeline stage 5: paginating projection67 * @param {object} query - express.js query object68 * @param {number} num - preset numbers of document per page69 * @param {object} sort - preset sorting configurations70 * @return {{$project}}71 */72const pullPipe_5_paginating = (query, num, sort) => {73 const $$meta = paginatedMetaExpression(query, num);74 const $project = {75 _id: 0,76 list: { $slice: ['$list', { $multiply: [{ $add: [$$meta.now, -1] }, $$meta.num] }, $$meta.num] },77 meta: {78 count: '$count',79 num: { $literal: $$meta.num },80 now: $$meta.now,81 end: $$meta.end,82 sort: { $literal: pullPipe_3_sorting(query, sort).$sort },83 period: { $literal: queryDateExpression(...parseQueryDate(query.date)) },84 },85 };86 return { $project };87};88// const pushPipe_1_modifying = (body) => {89// const _$$filter = { $filter: { input: '$list', as: 'doc', cond: {90// $and: [{ $in: ['$$doc._id', [ObjectId('5ab33bec53da62203f81676d')] /** body.list.map(i => ObjectId(i)) **/] } /** ,additional matcher **/]}91// }};92// const _$$map = { $map: { input: _$$filter, as: 'doc', in: { $mergeObjects: ['$$doc', body] }}};93// const $project = { list: _$$map };94// return { $project };95// };96//97//98// const pushPipe_2_splitting = () => {99// const $unwind = '$list';100// return { $unwind };101// };102//103//104// const pushPipe_3_destructuring = () => {105// const $replaceRoot = { newRoot: '$list' };106// return { $replaceRoot };107// };108//109//110// const pushPipe_4_overwriting = (collection) => {111// const $out = collection; // todo: note: <CURRENT MONGODB IS NOT SUPPORTED> current (v3.6): overwrite the whole collection (x)112// return { $out };113// };114// query-builder115/**116 * combined all pipeline stages into an Mongo aggregation query117 * @param {string} collection - MongoDB collection name118 * @param {object} params - express.js param object119 * @param {object} query - express.js query object120 * @param {number} num - preset numbers of document per page121 * @param {object} sort - preset sorting configurations122 * @return {array} - Mongo aggregation query123 */124const getAggregationQuery = (collection, params, query, num, sort/** , update **/) => {125 const pullDocuments = [126 pullPipe_1_matching(collection, params, query),127 pullPipe_2_masking(params),128 pullPipe_3_sorting(query, sort),129 pullPipe_4_grouping(),130 pullPipe_5_paginating(query, num, sort),131 ];132 // const pushDocuments = [133 // ...pullDocuments,134 // pushPipe_1_modifying(update),135 // pushPipe_2_splitting(),136 // pushPipe_3_destructuring(),137 // pushPipe_4_overwriting(collection)138 // ];139 return pullDocuments;140 // return update ? pushDocuments : pullDocuments;141};142// exports143module.exports = {144 getAggregationQuery,145};146Object.defineProperty(module.exports, Symbol.for('__TEST__'), {147 value: {148 pullPipe_1_matching,149 pullPipe_2_masking,150 pullPipe_3_sorting,151 pullPipe_4_grouping,152 pullPipe_5_paginating,153 ...module.exports,154 },...

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bootstrap-table.mergecells.js

Source:bootstrap-table.mergecells.js Github

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1<script src="~/lib/bootstrap-table/dist/extensions/export/bootstrap-table-export.js"></script>2 <script src="~/lib/tableexport.jquery.plugin/tableExport.js"></script>3 /**4 * 合并行5 * @@param data 原始数据（在服务端完成排序）6 * @@param fieldName 合并属性名称数组7 * @@param colspan 列数8 * @@param target 目标表格对象9 */10 function mergeCells(data, fieldName, colspan, target) {11 if (data.length == 0) {12 alert("不能传入空数据");13 return;14 }15 var numArr = [];16 var value = data[0][fieldName];17 var num = 0;18 for (var i = 0; i < data.length; i++) {19 if (value != data[i][fieldName]) {20 numArr.push(num);21 value = data[i][fieldName];22 num = 1;23 continue;24 }25 num++;26 }27 var merIndex = 0;28 for (var i = 0; i < numArr.length; i++) {29 $(target).bootstrapTable('mergeCells', { index: merIndex, field: fieldName, colspan: colspan, rowspan: numArr[i] })30 merIndex += numArr[i];31 }32}33/**34* 合并列35* @@param data 原始数据（在服务端完成排序）36* @@param fieldName 合并属性数组37* @@param target 目标表格对象38*/39function mergeColspan(data, fieldNameArr, target) {40 if (data.length == 0) {41 alert("不能传入空数据");42 return;43 }44 if (fieldNameArr.length == 0) {45 alert("请传入属性值");46 return;47 }48 var num = -1;49 var index = 0;50 for (var i = 0; i < data.length; i++) {51 num++;52 for (var v in fieldNameArr) {53 index = 1;54 if (data[i][fieldNameArr[v]] != data[i][fieldNameArr[0]]) {55 index = 0;56 break;57 }58 }59 if (index == 0) {60 continue;61 }62 $(target).bootstrapTable('mergeCells', { index: num, field: fieldNameArr[0], colspan: fieldNameArr.length, rowspan: 1 });63 }64}65/**66* 合并单元格67* @@param target 目标表格对象68* @@param data 原始数据（在服务端完成排序）69* @@param fieldName 合并参照的属性名称70* @@param fieldList 要合并的字段集合[不含fieldName]![]71* @@param colspan 合并开始列72*/73function mergeCells2(target, data, fieldName, fieldList, colspan) {74 // 声明一个map计算相同属性值在data对象出现的次数和75 var sortMap = {};76 var index = 0;77 var begini = 0;78 var endi = 0;79 // 统计fieldName长度80 getCount(target, data, 0, data.length, fieldName, index, sortMap);81 for (var prop in sortMap) {82 endi = index + sortMap[prop];83 if (sortMap[prop] > 1) {84 // console.log(fieldName + ":" + prop,sortMap[prop]);85 for (var i = 0; i < fieldList.length; i++) {86 getCount(target, data, begini, endi, fieldList[i], index, null);87 }88 }89 index = begini = endi;90 }91}92function getCount(target, data, begini, endi, fieldName, index, sortMap) {93 // console.log('fieldName:' + fieldName);94 // console.log(begini,endi);95 if (sortMap == null) {96 sortMap = {};97 }98 for (var i = begini; i < endi; i++) {99 for (var prop in data[i]) {100 if (prop == fieldName) {101 var key = data[i][prop];102 if (sortMap.hasOwnProperty(key)) {103 sortMap[key] = sortMap[key] + 1;104 } else {105 sortMap[key] = 1;106 }107 // console.log(fieldName + ":" + key, sortMap[key]);108 break;109 }110 }111 }112 for (var p in sortMap) {113 var count = sortMap[p] * 1;114 // console.log(">>>>>" + ":" + p , count);115 $(target).bootstrapTable('mergeCells', { index: index, field: fieldName, colspan: 1, rowspan: count });116 index += count;117 }118}119$("#mainTable").bootstrapTable({120 onLoadSuccess: function (data) {121 //mergeCells(data, "OrderId", 1, $('#mainTable'));//行合并122 mergeCells2($('#mainTable'), data, "OrderId", ["OrderDate", "MovementTypeDescription"], 1);//行合并123 //mergeColspan(data, ["FDepName3", "FDepName1", "FDepName2"], $('#table2'));//列合并124 },...

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js.js

Source:js.js Github

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1/* 服务请求end*/2//获取url中的参数3;4(function($) {5 $.getUrlParam = function(name) {6 var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");7 var r = window.location.search.substr(1).match(reg);8 if(r != null)9 return decodeURI(r[2]);10 return null;11 };12})(jQuery);13//将表单设置成查看的样式14;15(function() {16 setFormSee = function(opts) {17 $(opts.formEle).find('input[type="text"]').css({18 'border': 'none'19 }).prop('disabled', 'disabled');20 }21 22 $('.disabled-text').css({23 'border': 'none'24 }).prop('disabled', 'disabled');25})();26//表单验证27;28(function() {29 formValidate = function(opts) {30 this.formEle = $(opts.formEle);31 this.init();32 }33 formValidate.prototype.init = function() {34 $.metadata.setType("attr", "validate");35 var v = this.formEle.validate({36 errorPlacement: function(lable, element) {37 element.ligerHideTip();38 if(element.hasClass("l-textarea")) {39 element.ligerTip({40 content: lable.html(),41 target: element[0]42 });43 } else if(element.hasClass("l-text-field")) {44 element.parent().ligerTip({45 content: lable.html(),46 target: element[0]47 });48 } else if(element.hasClass("l-text-combobox")) {49 element.parent().ligerTip({50 content: lable.html(),51 target: element[0]52 });53 } else {54 lable.appendTo(element.parents("td:first"));55 }56 },57 success: function(lable) {58 lable.ligerHideTip();59 lable.remove();60 },61 submitHandler: function() {62 $("form .l-text,.l-textarea").ligerHideTip();63 }64 });65 this.formEle.ligerForm({66 inputWidth: '',67 validate: true68 });69 }70})();71function mergeObj(obj, source) {72 var json = obj || {};73 for(n in source) {74 json[n] = source[n];75 }76 return json;77}78window.USER_INFO = {79 SITE_URL: 'http://119.29.252.75'80}81//合并单元格82function mergeCells(data, fieldName, newindex, target) {83 //声明一个map计算相同属性值在data对象出现的次数和84 var sortMap = {};85 for(var i = 0; i < data.length; i++) {86 for(var prop in data[i]) {87 if(prop == fieldName) {88 var key = data[i][prop]89 if(sortMap.hasOwnProperty(key)) {90 sortMap[key] = sortMap[key] * 1 + 1;91 } else {92 sortMap[key] = 1;93 }94 break;95 }96 }97 }98 for(var prop in sortMap) {99 console.log(prop, sortMap[prop])100 }101 var index = 0;102 for(var prop in sortMap) {103 var count = sortMap[prop] * 1;104 $(target).bootstrapTable('mergeCells', {105 index: newindex != null ? newindex : index,106 field: fieldName,107 rowspan: count108 });109 if(newindex == null) {110 index += count;111 }112 }113}114function cancelLayer() {115 var index = parent.layer.getFrameIndex(window.name);116 parent.layer.close(index);117}118function printOrder() {119 $(".button-group").addClass("display-none");120 $("textarea").each(function() {121 var value = $(this).val();122 $(this).parent().text(value);123 $(this).remove();124 });125 window.print();126 var index = parent.layer.getFrameIndex(window.name);127 parent.layer.close(index);128}129function showCurrentDate() {130 var myDate = new Date;131 var str = "" + myDate.getFullYear() + "-";132 if(myDate.getMonth() < 10) {133 str += '0' + (myDate.getMonth() + 1) + "-";134 } else {135 str += (myDate.getMonth() + 1) + "-";136 }137 if(myDate.getDate() < 10) {138 str += '0' + myDate.getDate();139 } else {140 str += myDate.getDate();141 }142 return str;...

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ywgl.js

Source:ywgl.js Github

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1/*!2 * 业务管理3 * 4 * @author sunxuelong5 * @version 2017-2-86 */7/**8 * 合并单元格9 * @param data 原始数据（在服务端完成排序）10 * @param fieldName 合并属性名称11 @param flagName 标记属性名称12 * @param colspan 合并列13 * @param target 目标表格对象14 */15 function mergeCells(data,fieldName,flagName,colspan,target){16 //声明一个map计算相同属性值在data对象出现的次数和17 var sortMap = {};18 for(var i = 0 ; i < data.length ; i++){19 for(var prop in data[i]){20 if(prop == flagName){21 var key = data[i][prop]22 if(sortMap.hasOwnProperty(key)){23 sortMap[key] = sortMap[key] * 1 + 1;24 } else {25 sortMap[key] = 1;26 }27 break;28 }29 }30 }31 for(var prop in sortMap){32 console.log(prop,sortMap[prop])33 }34 var index = 0;35 for(var prop in sortMap){36 var count = sortMap[prop] * 1;37 var fieldNames=fieldName.split(",");38 $.each(fieldNames,function(i,v){39 $(target).bootstrapTable('mergeCells',{index:index, field:v, colspan: colspan, rowspan: count});40 });41 index += count;42 }43 }44//清除ajax缓存兼容45$(function(){46 $.ajaxSetup({ cache: false });...

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datatable.js

Source:datatable.js Github

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1/**2 * 模拟CRUD数据3 */4export default ({ fetchMock, delay, mock, toSuccess, toError }) => {5 return {6 // 表格带分页7 '/api/datatable/getList': options => {8 const body = JSON.parse(options.body);9 const currentPage = body.currentPage;10 const sortMap = body.sortMap;11 const idbase = (currentPage - 1) * 10 + 1;12 let sortField = { 'age|1-100': 1 };13 if (sortMap && sortMap.age) { // 模拟排序14 let i = 60;15 sortField =16 sortMap.age === 'asc'17 ? { 'age|+1': new Array(10).fill(0).map(item => i++) }18 : { 'age|+1': new Array(10).fill(0).map(item => i--) };19 }20 return toSuccess(21 mock({22 currentPage: currentPage,23 showCount: body.showCount,24 totalResult: 100,25 totalPage: 10,26 [`dataList|${body.showCount}`]: [27 {28 'id|+1': idbase,29 name: '@cname',30 address: '@county()',31 'role|1': ['1', '2', '3'],32 ...sortField33 }34 ]35 }),36 40037 );38 },39 // 前台分页40 '/api/datatable/frontPaging': options => {41 return toSuccess(42 mock({43 [`list|33`]: [44 {45 'id|+1': 1,46 name: '@cname',47 address: '@county()',48 'age|1-100': 1,49 'role|1': ['1', '2', '3']50 }51 ]52 }),53 40054 );55 }56 };...

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test.js

Source:test.js Github

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1$(function(){2 $("#table").bootstrapTable({3 pagination: true,4 onLoadSuccess : function(data) {5 var data = $('#table').bootstrapTable('getData', true);6 //合并单元格7 mergeCells(data, "period_name", 1, $('#table'));8 }9 })10});1112function mergeCells(data,fieldName,colspan,target){13 //声明一个map计算相同属性值在data对象出现的次数和14 var sortMap = {};15 for(var i = 0 ; i < data.length ; i++){16 for(var prop in data[i]){17 if(prop == fieldName){18 var key = data[i][prop]19 if(sortMap.hasOwnProperty(key)){20 sortMap[key] = sortMap[key] * 1 + 1;21 } else {22 sortMap[key] = 1;23 }24 break;25 }26 }27 }28 for(var prop in sortMap){29 console.log(prop,sortMap[prop])30 }31 var index = 0;32 for(var prop in sortMap){33 var count = sortMap[prop] * 1;34 $(target).bootstrapTable('mergeCells',{index:index, field:fieldName, colspan: colspan, rowspan: count});35 index += count;36 } ...

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JavaScript1.js

Source:JavaScript1.js Github

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1var customSortString = function (S, T) {2 if (!S)3 return T;4 if (!T)5 return S;6 let leftover = '';7 let sortMap = new Map();8 S.split('').forEach(item => {9 if (!sortMap.has(item)) {10 sortMap.set(item, []);11 }12 });13 T.split('').forEach(item => {14 if (sortMap.has(item)) {15 sortMap.get(item).push(item);16 }17 else {18 leftover += item;19 }20 });21 let ret = '';22 for (const [key, value] of sortMap) {23 value.forEach(char => {24 ret += (char);25 });26 }27 return ret + leftover;...

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Jest Testing Tutorial

LambdaTest’s Jest Testing Tutorial covers step-by-step guides around Jest with code examples to help you be proficient with the Jest framework. The Jest tutorial has chapters to help you learn right from the basics of Jest framework to code-based tutorials around testing react apps with Jest, perform snapshot testing, import ES modules and more.

Chapters

  1. What is Jest Framework
  2. Advantages of Jest - Jest has 3,898,000 GitHub repositories, as mentioned on its official website. Learn what makes Jest special and why Jest has gained popularity among the testing and developer community.
  3. Jest Installation - All the prerequisites and set up steps needed to help you start Jest automation testing.
  4. Using Jest with NodeJS Project - Learn how to leverage Jest framework to automate testing using a NodeJS Project.
  5. Writing First Test for Jest Framework - Get started with code-based tutorial to help you write and execute your first Jest framework testing script.
  6. Jest Vocabulary - Learn the industry renowned and official jargons of the Jest framework by digging deep into the Jest vocabulary.
  7. Unit Testing with Jest - Step-by-step tutorial to help you execute unit testing with Jest framework.
  8. Jest Basics - Learn about the most pivotal and basic features which makes Jest special.
  9. Jest Parameterized Tests - Avoid code duplication and fasten automation testing with Jest using parameterized tests. Parameterization allows you to trigger the same test scenario over different test configurations by incorporating parameters.
  10. Jest Matchers - Enforce assertions better with the help of matchers. Matchers help you compare the actual output with the expected one. Here is an example to see if the object is acquired from the correct class or not. -

|<p>it('check_object_of_Car', () => {</p><p> expect(newCar()).toBeInstanceOf(Car);</p><p> });</p>| | :- |

  1. Jest Hooks: Setup and Teardown - Learn how to set up conditions which needs to be followed by the test execution and incorporate a tear down function to free resources after the execution is complete.
  2. Jest Code Coverage - Unsure there is no code left unchecked in your application. Jest gives a specific flag called --coverage to help you generate code coverage.
  3. HTML Report Generation - Learn how to create a comprehensive HTML report based on your Jest test execution.
  4. Testing React app using Jest Framework - Learn how to test your react web-application with Jest framework in this detailed Jest tutorial.
  5. Test using LambdaTest cloud Selenium Grid - Run your Jest testing script over LambdaTest cloud-based platform and leverage parallel testing to help trim down your test execution time.
  6. Snapshot Testing for React Front Ends - Capture screenshots of your react based web-application and compare them automatically for visual anomalies with the help of Jest tutorial.
  7. Bonus: Import ES modules with Jest - ES modules are also known as ECMAScript modules. Learn how to best use them by importing in your Jest testing scripts.
  8. Jest vs Mocha vs Jasmine - Learn the key differences between the most popular JavaScript-based testing frameworks i.e. Jest, Mocha, and Jasmine.
  9. Jest FAQs(Frequently Asked Questions) - Explore the most commonly asked questions around Jest framework, with their answers.

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