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How to use nodeToMutate method in stryker-parent

Best JavaScript code snippet using stryker-parent

statement-mutant-placer.spec.ts

Source:statement-mutant-placer.spec.ts

1import { expect } from 'chai';2import { types } from '@babel/core';3import generate from '@babel/generator';4import { normalizeWhitespaces } from '@stryker-mutator/util';5import { statementMutantPlacer } from '../../../src/mutant-placers/statement-mutant-placer';6import { findNodePath, parseJS } from '../../helpers/syntax-test-helpers';7import { Mutant } from '../../../src/mutant';8import { createMutant } from '../../helpers/factories';9describe('statementMutantPlacer', () => {10  it('should have the correct name', () => {11    expect(statementMutantPlacer.name).eq('statementMutantPlacer');12  });13  describe(statementMutantPlacer.canPlace.name, () => {14    it('should be false for anything but a statement', () => {15      [16        findNodePath(parseJS('foo + bar'), (p) => p.isBinaryExpression()),17        findNodePath(parseJS('foo = bar'), (p) => p.isAssignmentExpression()),18        findNodePath(parseJS('foo.bar()'), (p) => p.isCallExpression()),19      ].forEach((node) => {20        expect(statementMutantPlacer.canPlace(node)).false;21      });22    });23    it('should be able to place a mutant in a statement', () => {24      // Arrange25      const ast = parseJS('const foo = a + b');26      const statement = findNodePath(ast, (p) => p.isVariableDeclaration());27      // Act28      const actual = statementMutantPlacer.canPlace(statement);29      // Assert30      expect(actual).true;31    });32  });33  describe(statementMutantPlacer.place.name, () => {34    function arrangeSingleMutant() {35      const ast = parseJS('const foo = a + b');36      const statement = findNodePath<types.VariableDeclaration>(ast, (p) => p.isVariableDeclaration());37      const nodeToMutate = findNodePath<types.BinaryExpression>(ast, (p) => p.isBinaryExpression());38      const mutant = new Mutant('1', 'file.js', nodeToMutate.node, {39        replacement: types.binaryExpression('>>>', types.identifier('bar'), types.identifier('baz')),40        mutatorName: 'fooMutator',41      });42      const appliedMutants = new Map([[mutant, mutant.applied(statement.node)]]);43      return { statement, appliedMutants, ast };44    }45    it('should be able to place a mutant in a statement', () => {46      // Arrange47      const { statement, appliedMutants, ast } = arrangeSingleMutant();48      // Act49      statementMutantPlacer.place(statement, appliedMutants);50      const actualCode = normalizeWhitespaces(generate(ast).code);51      // Assert52      expect(actualCode).contains(normalizeWhitespaces('if (stryMutAct_9fa48("1")) { const foo = bar >>> baz; } else '));53    });54    it('should keep block statements in tact', () => {55      // Arrange56      const ast = parseJS('function add(a, b) { return a + b; }');57      const statement = findNodePath<types.BlockStatement>(ast, (p) => p.isBlockStatement());58      const originalNodePath = findNodePath<types.BinaryExpression>(ast, (p) => p.isBinaryExpression());59      const mutant = createMutant({60        original: originalNodePath.node,61        replacement: types.binaryExpression('>>>', types.identifier('a'), types.identifier('b')),62      });63      const appliedMutants = new Map([[mutant, mutant.applied(statement.node)]]);64      // Act65      statementMutantPlacer.place(statement, appliedMutants);66      const actualCode = normalizeWhitespaces(generate(ast).code);67      // Assert68      expect(actualCode).matches(/function\s*add\s*\(a,\s*b\)\s*{.*}/);69    });70    it('should place the original code as alternative (inside `else`)', () => {71      const { ast, appliedMutants, statement } = arrangeSingleMutant();72      statementMutantPlacer.place(statement, appliedMutants);73      const actualCode = normalizeWhitespaces(generate(ast).code);74      expect(actualCode).matches(/else\s*{.*const foo = a \+ b;\s*\}/);75    });76    it('should add mutant coverage syntax', () => {77      const { ast, appliedMutants, statement } = arrangeSingleMutant();78      statementMutantPlacer.place(statement, appliedMutants);79      const actualCode = normalizeWhitespaces(generate(ast).code);80      expect(actualCode).matches(/else\s*{\s*stryCov_9fa48\("1"\)/);81    });82    it('should be able to place multiple mutants', () => {83      // Arrange84      const ast = parseJS('const foo = a + b');85      const statement = findNodePath<types.VariableDeclaration>(ast, (p) => p.isVariableDeclaration());86      const binaryExpression = findNodePath<types.BinaryExpression>(ast, (p) => p.isBinaryExpression());87      const fooIdentifier = findNodePath<types.Identifier>(ast, (p) => p.isIdentifier());88      const mutants = [89        new Mutant('52', 'file.js', binaryExpression.node, {90          replacement: types.binaryExpression('>>>', types.identifier('bar'), types.identifier('baz')),91          mutatorName: 'fooMutator',92        }),93        new Mutant('659', 'file.js', fooIdentifier.node, {94          replacement: types.identifier('bar'),95          mutatorName: 'fooMutator',96        }),97      ];98      const appliedMutants = new Map<Mutant, types.Statement>();99      appliedMutants.set(mutants[0], mutants[0].applied(statement.node));100      appliedMutants.set(mutants[1], mutants[1].applied(statement.node));101      // Act102      statementMutantPlacer.place(statement, appliedMutants);103      const actualCode = normalizeWhitespaces(generate(ast).code);104      // Assert105      expect(actualCode).contains(106        normalizeWhitespaces(`if (stryMutAct_9fa48("659")) {107          const bar = a + b;108        } else if (stryMutAct_9fa48("52")) {109          const foo = bar >>> baz;110        } else {111          stryCov_9fa48("52", "659")`)112      );113    });114  });...

gprun2.js

Source:gprun2.js

1'use strict'2const logger = require('../logger/logger')(module)3const nconf = require('../config/conf.js').nconf4const fs = require('fs')5const toString = require('stream-to-string')6const readline = require('readline')7const request = require('request-promise-native')8nconf.defaults({9"datasourceurl":"http://localhost:8080",10"minDepth": 2,11"maxDepth": 6,12"functionSet":{13    "+":{14      "arity":215    },16    "-":{17      "arity":218    },19    "*":{20      "arity":221    },22    "/":{23      "arity":224    },25    "if<=":{26      "arity":427    }28   29  },30  "variables":["distancediff","weightdiff","goingdiff"],31  "dependantvariable":"speeddiff",32  "proportions":{33    "functions": 0.5,34    "constants": 0.25,35    "variables": 0.2536  },37  "constants": {38    "nconstants" : 1000,39    "min": -10.0,40    "max": 10.041  },42  "constantsSet":[],43  "populationsize": 100,44  "datafileurl":"../data/test-100.json",45  "maxSpeedIncrease":0.40340390203403914,46  "maxSpeedDecrease":-0.2880974917179366,47  "epochs": 100,48  'nelite': 5,49  "crossoverrate":0.9,50  "tournamentsize": 5,51  "pointmutationrate":0.05,52})53const GPnode = require('../GPNode/GPnode.js').GPnode54const gpa = require('./gpalgorithm')55const batchsize = nconf.get("batchsize")56const dependantvariable = nconf.get("dependantvariable")57const epochs = nconf.get("epochs")58const populationsize = nconf.get('populationsize')59const nelite = nconf.get('nelite')60const crossoverRate = nconf.get('crossoverrate')61const tournamentSize = nconf.get('tournamentsize')62nconf.set('constantsSet',gpa.generateConstants(nconf.get('constants').nconstants))63const getDataBatch = async(batchSize) => {64  let url = nconf.get("datasourceurl")+"/data"65  if (typeof batchSize != 'undefined'){66    url = nconf.get("datasourceurl")+"/data?n=" + batchSize67  }68  const promise = new Promise((resolve,reject) => {69    request(url)70      .then(data => {71        //console.log("obs: " + JSON.stringify(data))72        resolve(data)73      })74  })75  //const data = await getBatch(batchSize)76  let data = await promise77 // console.log(data)78  return JSON.parse(data)79}80const learnStep = (epoch) => {81  console.log("#Epoch: " + epoch)82  console.log(JSON.stringify(population[0].stats.fitness))83  console.log("#" + population[0].rule.toStrArr())84  //prepare the population for the next generation85  let newPopulation = new Array(populationsize)86  //copy elite members87  for(let i=0; i<nelite; i++){88    newPopulation[i]=population[i]89  }90  //replace poulation members91  for(let i = nelite; i<populationsize; i++){92      if(Math.random() < crossoverRate){ //crossover this member of the population93          let parent1 = gpa.getTournamentWinner(gpa.getTournament(population,tournamentSize))94          let parent2 = gpa.getTournamentWinner(gpa.getTournament(population,tournamentSize))95          let index1 = parent1.rule.selectIndex()96          let index2 = parent2.rule.selectIndex()97          let offspring = GPnode.crossover(parent1.rule, parent2.rule, index1, index2)98          let newPopulationMember = {99            rule:offspring,100            stats:{101              cumulativeError:0,102              nobservations:0,103              fitness:Number.MAX_VALUE104            }105          }106          newPopulation[i] = newPopulationMember107      }108      else{           //mutate109        let tournamentWinner = gpa.getTournamentWinner(gpa.getTournament(population,tournamentSize))110        let crossoverMutateIndex = tournamentWinner.rule.selectIndex()111        let cmDepth = nconf.get('minDepth') +Math.floor(Math.random() * (nconf.get('maxDepth')-nconf.get('minDepth')))112        let mutated = GPnode.subtreeMutate(tournamentWinner.rule, crossoverMutateIndex,cmDepth)113        let mutatedArray = mutated.toArray()114        for(let j=0;j<mutatedArray.length;j++){115            let nodeToMutate=mutatedArray[j]116            let rnd=Math.random()117            //console.log("rnd: "+ rnd)118            if(rnd > nconf.get('pointmutationrate')){119              //logger.info(i + 'point mutate it');120              GPnode.pointMutate(nodeToMutate) //mutates in situ121            }122            else{123              //logger.info(i + 'do not point mutate it');124            }125        }126        let newPopMember={127            rule:mutated,128            stats:{129              cumulativeError:0,130              nobservations:0,131              fitness:Number.MAX_VALUE132            }133          }134          newPopulation[i]=newPopMember;135      }136    }137    population = newPopulation138    getDataBatch(batchsize)139    .then(databatch => {140      population = gpa.evaluatePopulation(population, databatch, true, dependantvariable)141      population = gpa.sortPopulation(population)142      if(epoch < epochs){143        learnStep(epoch + 1)144      }145      else{ //print out final result146        console.log("#Epoch: " + epoch)147        console.log(JSON.stringify(population[0].stats.fitness))148        console.log("#" + population[0].rule.toStrArr())149      }150    })151    152}153let population = gpa.generatePopulation(nconf.get('populationsize'))154getDataBatch(batchsize)155.then(databatch => {156  population = gpa.evaluatePopulation(population, databatch, true, dependantvariable)157  population = gpa.sortPopulation(population)158  learnStep(0)...

db.js

Source:db.js

1import forEach from 'lodash/forEach';2import invariant from 'invariant';3import iterateField from '../helpers/iterate-field';4import mergeWith from 'lodash/mergeWith';5/* eslint-disable consistent-return */6function mergeCustomizer (objVal, srcVal) {7  if (objVal && objVal.constructor === Array) {8    return srcVal;9  }10}11/* eslint-enable consistent-return */12// The store is responsible for holding and managing data13export default class DB {14  constructor () {15    // Local database16    // composed of data nodes, e.g.17    // {18    //   56d0583eb0dc646f07b05cf2: {...},19    //   568fc7d152e76bc604a74520: {...}20    // }21    this.db = {};22  }23  mergeChanges (changes) {24    mergeWith(this.db, changes, mergeCustomizer);25  }26  removeNode (id) {27    this.db[id] && delete this.db[id];28  }29  // XXX UNDOCUMENTED && UNTESTED30  performUserMutate ({nodeId, type, field}, nodes) {31    invariant(nodeId, 'Relate: mutate does not have a nodeId defined');32    invariant(type, 'Relate: mutate does not have a type defined');33    invariant(field, 'Relate: mutate does not have a field defined');34    let result = [];35    const nodeToMutate = this.db[nodeId];36    if (nodeToMutate) {37      iterateField(field, nodeToMutate, (dataField, parent, lastField) => {38        // add nodes to data field39        const nodeToMutateNodes = dataField.get();40        const nodesArr = nodes.constructor === Array ? nodes : [nodes];41        parent[lastField] = [...nodeToMutateNodes, ...nodesArr];42        result = [nodeId];43      });44    }45    return result;46  }47  getData (data, fragment) {48    const result = {};49    forEach(fragment, (frag, propertyName) => {50      let dataValue = data[propertyName];51      if (dataValue === undefined) dataValue = null;52      if (typeof frag === 'object' && dataValue) {53        const isList = dataValue && dataValue.constructor === Array;54        const isId = typeof dataValue !== 'object' && this.db[dataValue];55        if (isList) {56          const list = [];57          forEach(dataValue, (piece) => {58            const isPieceId = typeof piece !== 'object' && this.db[piece];59            list.push(this.getData(isPieceId ? this.db[piece] : piece, frag));60          });61          result[propertyName] = list;62        } else if (isId) {63          result[propertyName] = this.getData(this.db[dataValue], frag);64        } else {65          result[propertyName] = this.getData(dataValue, frag);66        }67      } else {68        result[propertyName] = dataValue;69      }70    });71    return result;72  }73  getNode (id) {74    return this.db[id];75  }...

Using AI Code Generation

1const nodeToMutate = require('stryker-parent').nodeToMutate;2const myNode = nodeToMutate();3const nodeToMutate = require('stryker-child').nodeToMutate;4const myNode = nodeToMutate();5module.exports = function(config) {6  config.set({7  });8};9module.exports = function(config) {10  config.set({11  });12};13module.exports = function(config) {14  config.set({15  });16};

Using AI Code Generation

1const path = require('path');2const { NodeMutator } = require('stryker-parent');3class MyMutator extends NodeMutator {4  constructor(name) {5    super(name);6  }7  mutate(node) {8    if (node.type === 'Literal' && typeof node.value === 'string') {9      return [this.nodeToMutate(node)];10    }11  }12}13module.exports = MyMutator;14module.exports = function(config) {15  config.set({16    mutator: {17        path.resolve(__dirname, 'test.js')18    }19  });20};

Using AI Code Generation

1var stryker = require('stryker-parent');2var nodeToMutate = stryker.nodeToMutate;3var fs = require('fs');4var codeToMutate = fs.readFileSync('test.js', 'utf8');5var node = nodeToMutate(codeToMutate, 1, 2);6console.log(node);7var foo = function () {8  return 1;9};10var bar = function () {11  return 2;12};13module.exports = {14};15If I want to mutate the line return 1; , how do I get the AST node of that line? I tried the following code:16var stryker = require('stryker-parent');17var nodeToMutate = stryker.nodeToMutate;18var fs = require('fs');19var codeToMutate = fs.readFileSync('test.js', 'utf8');20var node = nodeToMutate(codeToMutate, 1, 2);21console.log(node);22Node {23  loc: Location { start: [Object], end: [Object] },24  body: [ Node { type: 'VariableDeclaration', start: 0, end: 2, loc: [Object], range: [Object], declarations: [Array], kind: 'var' } ],25  sourceType: 'script' }26I would expect to get the node of the line return 1; . How can I achieve this?27var stryker = require('stryker-parent');28var nodeToMutate = stryker.nodeToMutate;29var fs = require('fs');30var codeToMutate = fs.readFileSync('test.js', 'utf8');

Using AI Code Generation

1const strykerParent = require('stryker-parent');2const nodeToMutate = strykerParent.nodeToMutate;3const node = nodeToMutate();4const strykerParent = require('stryker-parent');5const nodeToMutate = strykerParent.nodeToMutate;6const node = nodeToMutate();7const strykerParent = require('stryker-parent');8const nodeToMutate = strykerParent.nodeToMutate;9const node = nodeToMutate();10const strykerParent = require('stryker-parent');11const nodeToMutate = strykerParent.nodeToMutate;12const node = nodeToMutate();13const strykerParent = require('stryker-parent');14const nodeToMutate = strykerParent.nodeToMutate;15const node = nodeToMutate();16const strykerParent = require('stryker-parent');17const nodeToMutate = strykerParent.nodeToMutate;18const node = nodeToMutate();19const strykerParent = require('stryker-parent');20const nodeToMutate = strykerParent.nodeToMutate;21const node = nodeToMutate();22const strykerParent = require('stryker-parent');23const nodeToMutate = strykerParent.nodeToMutate;24const node = nodeToMutate();

Using AI Code Generation

1var strykerParent = require('stryker-parent');2var nodeToMutate = strykerParent.nodeToMutate;3var node = nodeToMutate('test.js', 1, 1);4console.log(node.type);5var node = nodeToMutate('test.js', 1, 10);6console.log(node.type);7var node = nodeToMutate('test.js', 1, 10);8console.log(node.type);9var node = nodeToMutate('test.js', 2, 2);10console.log(node.type);11var node = nodeToMutate('test.js', 3, 1);12console.log(node.type);13var node = nodeToMutate('test.js', 3, 10);14console.log(node.type);15var node = nodeToMutate('test.js', 3, 20);16console.log(node.type);17var node = nodeToMutate('test.js', 4, 2);18console.log(node.type);19var node = nodeToMutate('test.js', 4, 11);20console.log(node.type);21var node = nodeToMutate('test.js', 4, 20);22console.log(node.type);23var node = nodeToMutate('test.js', 5, 1);24console.log(node.type);25var node = nodeToMutate('test.js', 5, 10);26console.log(node.type);27var node = nodeToMutate('test.js', 5, 19);28console.log(node.type);29var node = nodeToMutate('test.js', 5, 28);30console.log(node.type);31var node = nodeToMutate('test.js', 5, 37);32console.log(node.type);33var node = nodeToMutate('test.js', 6, 1);34console.log(node.type);35var node = nodeToMutate('test.js', 6, 10);36console.log(node.type);

Using AI Code Generation

1var nodeToMutate = require('stryker-parent').nodeToMutate;2var mutate = nodeToMutate('test.js');3mutate('a + b', function (mutated) {4  console.log(mutated);5});6var nodeToMutate = require('stryker-parent').nodeToMutate;7var mutate = nodeToMutate('test.js');8mutate('a + b', function (mutated) {9  console.log(mutated);10});11var nodeToMutate = require('stryker-parent').nodeToMutate;12var mutate = nodeToMutate('test.js');13mutate('a + b', function (mutated) {14  console.log(mutated);15});16var nodeToMutate = require('stryker-parent').nodeToMutate;17var mutate = nodeToMutate('test.js');18mutate('a + b', function (mutated) {19  console.log(mutated);20});21var nodeToMutate = require('stryker-parent').nodeToMutate;22var mutate = nodeToMutate('test.js');23mutate('a + b', function (mutated) {24  console.log(mutated);25});26var nodeToMutate = require('stryker-parent').nodeToMutate;27var mutate = nodeToMutate('test.js');28mutate('a + b', function (mutated) {29  console.log(mutated);30});

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