How to use tryThis method in istanbul

Best JavaScript code snippet using istanbul

regress-101488.js

Source:regress-101488.js

...45var expectedvalues = [];46var arr = [];47status = inSection(1);48arr = Array();49tryThis('arr.length = new Number(1);');50actual = arr.length;51expect = 1;52addThis();53status = inSection(2);54arr = Array(5);55tryThis('arr.length = new Number(1);');56actual = arr.length;57expect = 1;58addThis();59status = inSection(3);60arr = Array();61tryThis('arr.length = new Number(17);');62actual = arr.length;63expect = 17;64addThis();65status = inSection(4);66arr = Array(5);67tryThis('arr.length = new Number(17);');68actual = arr.length;69expect = 17;70addThis();71/*72 * Also try the above with the "new" keyword before Array().73 * Array() and new Array() should be equivalent, by ECMA 15.4.1.174 */75status = inSection(5);76arr = new Array();77tryThis('arr.length = new Number(1);');78actual = arr.length;79expect = 1;80addThis();81status = inSection(6);82arr = new Array(5);83tryThis('arr.length = new Number(1);');84actual = arr.length;85expect = 1;86addThis();87arr = new Array();88tryThis('arr.length = new Number(17);');89actual = arr.length;90expect = 17;91addThis();92status = inSection(7);93arr = new Array(5);94tryThis('arr.length = new Number(17);');95actual = arr.length;96expect = 17;97addThis();98//-----------------------------------------------------------------------------99test();100//-----------------------------------------------------------------------------101function tryThis(s)102{103  try 104  {105    eval(s);106  }107  catch(e)108  {109    // keep going110  }111}112function addThis()113{114  statusitems[UBound] = status;115  actualvalues[UBound] = actual;...

solve.js

Source:solve.js

1/**2*  The checkBox, checkRow, and checkCol functions and the backtracking logic3*  are done with the help, and  permission, of the code written by4*  Carlino Gonzalez --> https://github.com/carlinoo5*  ,and adjusted for the purpose of this assignment by Georgios Kyriakou.6**/7const express=require('express');8const router = express.Router();9var board;10router.post('/solve',(req,res,next)=>{11	this.board = req.body.puzzle;12	let solved= [];13	let tryThis = 1;14	let stack = [];15	let number_of_gaps=0;16	let cur = 0;17	let k=0;18	let start =new Date();19	for(let i=0;i<this.board.length;i++)20	if(this.board[i]==0)21	number_of_gaps +=1;22	while(stack.length!=number_of_gaps){23		k++;24		if(k>1500000){25			return res.json({'error':true,'msg':'Too many cycles ran (>1500000), with no solution.'});26		}27		if (this.board[cur] == 0) {28			if (!checkCol(cur, tryThis, this.board) && !checkRow(cur, tryThis, this.board) && !checkBox(cur, tryThis, this.board)&& tryThis<10){//legal value29				this.board[cur] = tryThis;30				stack.push(cur);31				tryThis = 1;32				cur++;33			} else {34				if(tryThis>9){35					this.board[cur]=0;36					cur = stack.pop();37					tryThis = this.board[cur];38					this.board[cur]=0;39				}40				tryThis++;41			}42		}43		else {44			cur++;45			tryThis = 1;46		}47	}48	let end= new Date();49	let duration = end- start;50	res.json({'error':false,'solution':this.board, 'tries':k, 'time':duration});51});52function checkBox(i, num, board) {53	let toCheck = i;54	let x = (i % 9);55	let y = Math.floor(i / 9);56	i = i - (x % 3);57	i = i - (y % 3)*9;58	for (let k = i; k < i+3; k++) {         //check first row of 3x3 box59		if (board[k] == num && k!=toCheck) {60			return 1;61		}62	}63	for (let k = i+9; k < i+12; k++) {    //check second row of 3x3 box64		if (board[k] == num && k!=toCheck) {65			return 1;66		}67	}68	for (let k = i+18; k < i+21; k++) {   ////check third row of 3x3 box69		if (board[k] == num && k!=toCheck) {70			return 1;71		}72	}73	return 0;74}75function checkRow(i, num, board) {76	let toCheck = i77	i = Math.floor(i/9)*9;78	for (var k = i; k < i+9; k++) {79		if (board[k] == num && k!=toCheck) {80			return 1;81		}82	}83	return 0;84}85function checkCol(i, num, board) {86	let toCheck= i;87	i = (i % 9);88	var m = i;89	for (var k = i; k < i+9; k++) {90		if (board[m] == num && m!=toCheck) {91			return 1;92		}93		m = m + 9;94	}95	return 0;96}...

es6.js

Source:es6.js

1var esprima = require('esprima');2function tryThis(str, feature) {3    try {4        /*jshint evil: true */5        eval(str);6    } catch (ex) {7        console.error('ES6 feature [' + feature + '] is not available in this environment');8        return false;9    }10   // esprima parses sources with sourceType 'script' per default.11   // The only way to enable `import`/`export` is to parse as sourceType 'module'.12   try {13       try {14           esprima.parse(str);15       } catch (ex) {16           esprima.parse(str, { sourceType: 'module' });17       }18   } catch (ex) {19       console.error('ES6 feature [' + feature + '] is not yet supported by esprima mainline');20       return false;21   }22    return true;23}24module.exports = {25    isYieldAvailable: function () {26        return tryThis('function *foo() { yield 1; }', 'yield');27    },28    isSuperAvailable: function () {29        return tryThis('class Test extends Object { constructor() { super(); } }\nnew Test();', 'super');30    },31    isForOfAvailable: function () {32        return tryThis('function *foo() { yield 1; }\n' +33            'for (var k of foo()) {}', 'for-of');34    },35    isArrowFnAvailable: function () {36        return tryThis('[1 ,2, 3].map(x => x * x)', 'arrow function');37    },38    isImportAvailable: function () {39        return tryThis('import fs from "fs"', 'import');40    },41    isExportAvailable: function () {42        // We can test instrumentation of exports even if the environment doesn't support them.43        return true;44    }...

Using AI Code Generation

1var istanbul = require('istanbul');2var instrumenter = new istanbul.Instrumenter();3var fs = require('fs');4var code = fs.readFileSync('test.js', 'utf-8');5var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');6fs.writeFileSync('test.js', instrumentedCode);7var istanbul = require('istanbul');8var instrumenter = new istanbul.Instrumenter();9var fs = require('fs');10var code = fs.readFileSync('test.js', 'utf-8');11var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');12fs.writeFileSync('test.js', instrumentedCode);13var istanbul = require('istanbul');14var instrumenter = new istanbul.Instrumenter();15var fs = require('fs');16var code = fs.readFileSync('test.js', 'utf-8');17var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');18fs.writeFileSync('test.js', instrumentedCode);19var istanbul = require('istanbul');20var instrumenter = new istanbul.Instrumenter();21var fs = require('fs');22var code = fs.readFileSync('test.js', 'utf-8');23var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');24fs.writeFileSync('test.js', instrumentedCode);25var istanbul = require('istanbul');26var instrumenter = new istanbul.Instrumenter();27var fs = require('fs');28var code = fs.readFileSync('test.js', 'utf-8');29var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');30fs.writeFileSync('test.js', instrumentedCode);31var istanbul = require('istanbul');32var instrumenter = new istanbul.Instrumenter();33var fs = require('fs');34var code = fs.readFileSync('test.js', 'utf-8');35var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');36fs.writeFileSync('test.js', instrumentedCode);37var istanbul = require('istanbul');

Using AI Code Generation

1var istanbul = require('istanbul');2var instrumenter = new istanbul.Instrumenter();3var fs = require('fs');4var path = require('path');5var code = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf8');6var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');7eval(instrumentedCode);8tryThis();9function tryThis() {10  console.log('tryThis');11}12var istanbul = require.resolve('istanbul');13I am trying to use istanbul to instrument my code. I have installed istanbul globally and locally. I have also tried using require.resolve() to get the path of istanbul module and then using that path in

Using AI Code Generation

1var istanbul = require('istanbul');2var instrumenter = new istanbul.Instrumenter();3var fs = require('fs');4var path = require('path');5var code = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf-8');6var instrumented = instrumenter.instrumentSync(code, 'test.js');7console.log(instrumented);8var istanbul = require('istanbul');9var instrumenter = new istanbul.Instrumenter();10var fs = require('fs');11var path = require('path');12var code = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf-8');13var instrumented = instrumenter.instrumentSync(code, 'test.js');14console.log(instrumented);15var istanbul = require('istanbul');16var instrumenter = new istanbul.Instrumenter();17var fs = require('fs');18var path = require('path');19var code = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf-8');20var instrumented = instrumenter.instrumentSync(code, 'test.js');21console.log(instrumented);22var istanbul = require('istanbul');23var instrumenter = new istanbul.Instrumenter();24var fs = require('fs');25var path = require('path');26var code = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf-8');27var instrumented = instrumenter.instrumentSync(code, 'test.js');28console.log(instrumented);29var istanbul = require('istanbul');30var instrumenter = new istanbul.Instrumenter();31var fs = require('fs');32var path = require('path');33var code = fs.readFileSync(path.join(__dirname, 'test.js'), 'utf-8');34var instrumented = instrumenter.instrumentSync(code, 'test.js');35console.log(instrumented);36var istanbul = require('istanbul');37var instrumenter = new istanbul.Instrumenter();38var fs = require('fs');

Using AI Code Generation

1var istanbul = require('istanbul');2var instrumenter = new istanbul.Instrumenter();3var code = 'function foo() { return 1; }';4instrumenter.instrument(code, 'test.js', function(err, instrumentedCode) {5    console.log(instrumentedCode);6});

Using AI Code Generation

1var istanbul = require('istanbul');2var coverageVariable = '__coverage__';3var collector = new istanbul.Collector();4var reporter = new istanbul.Reporter();5var sync = false;6var test = require('./test.js');7test.tryThis();8collector.add(global[coverageVariable]);9reporter.add('lcov');10reporter.write(collector, sync, function () {11    console.log('All reports generated');12});13module.exports = function(config) {14  config.set({

Using AI Code Generation

1require('istanbul').instrumenter.instrumentSync = function() {2    return {3        code: 'tryThis(function() {',4        coverage: {}5    };6};7require('istanbul').instrumenter.lastFileCoverage = function() {8    return {};9};10require('istanbul').instrumenter.lastSourceMap = function() {11    return {};12};13require('istanbul').instrumenter.instrumentSync = function() {14    return {15        code: 'tryThis(function() {',16        coverage: {}17    };18};19require('istanbul').instrumenter.lastFileCoverage = function() {20    return {};21};22require('istanbul').instrumenter.lastSourceMap = function() {23    return {};24};25require('istanbul').instrumenter.instrumentSync = function() {26    return {27        code: 'tryThis(function() {',28        coverage: {}29    };30};31require('istanbul').instrumenter.lastFileCoverage = function() {32    return {};33};34require('istanbul').instrumenter.lastSourceMap = function() {35    return {};36};37require('istanbul').instrumenter.instrumentSync = function() {38    return {39        code: 'tryThis(function() {',40        coverage: {}41    };42};43require('istanbul').instrumenter.lastFileCoverage = function() {44    return {};45};46require('istanbul').instrumenter.lastSourceMap = function() {47    return {};48};49require('istanbul').instrumenter.instrumentSync = function() {50    return {51        code: 'tryThis(function() {',52        coverage: {}53    };54};55require('istanbul').instrumenter.lastFileCoverage = function() {56    return {};57};58require('istanbul').instrumenter.lastSourceMap = function() {59    return {};60};61require('istanbul').instrumenter.instrumentSync = function() {62    return {63        code: 'tryThis(function() {',64        coverage: {}65    };66};

Using AI Code Generation

1require('istanbul').hook.hookRequire();2var test = require('./test.js');3test.tryThis();4exports.tryThis = function(){5    try{6        console.log('try');7    }catch(e){8        console.log('catch');9    }10}

Using AI Code Generation

1function tryThis(){2    try{3        console.log('try');4    }catch(e){5        console.log('catch');6    }7}8require('istanbul').hook.hookRequire();9var test = require('./test.js');10test.tryThis();11exports.tryThis = function(){12    try{13        console.log('try');14    }catch(e){15        console.log('catch');16    }17}

Using AI Code Generation

1require('istanbul').hook.hookRequire();2require('./src/tryThis');3var tryThis = function(){4};5var tryThis = require('../src/tryThis');6describe("tryThis", function(){7  it("should try this", function(){8  });9});

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.