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How to use placeMutantsIfNeeded method in stryker-parent

Best JavaScript code snippet using stryker-parent

babel-transformer.ts

Source:babel-transformer.ts

...59        }60      }61    },62    exit(path) {63      placeMutantsIfNeeded(path);64    },65  });66  if (mutantCollector.hasPlacedMutants(originFileName)) {67    // Be sure to leave comments like `// @flow` in.68    let header = instrumentationBabelHeader;69    if (Array.isArray(root.program.body[0]?.leadingComments)) {70      header = [71        {72          ...instrumentationBabelHeader[0],73          leadingComments: root.program.body[0]?.leadingComments,74        },75        ...instrumentationBabelHeader.slice(1),76      ];77    }78    root.program.body.unshift(...header);79  }80  /**81   *  If mutants were collected, be sure to register them in the placement map.82   */83  function registerInPlacementMap(path: NodePath, mutantsToPlace: Mutant[]) {84    const placementPath = path.find((ancestor) => placementMap.has(ancestor.node));85    if (placementPath) {86      const appliedMutants = placementMap.get(placementPath.node)!.appliedMutants;87      mutantsToPlace.forEach((mutant) => appliedMutants.set(mutant, mutant.applied(placementPath.node)));88    } else {89      throw new Error(`Mutants cannot be placed. This shouldn't happen! Unplaced mutants: ${JSON.stringify(mutantsToPlace, null, 2)}`);90    }91  }92  /**93   * If this node can be used to place mutants on, add to the placement map94   */95  function addToPlacementMapIfPossible(path: NodePath) {96    const placer = mutantPlacers.find((p) => p.canPlace(path));97    if (placer) {98      placementMap.set(path.node, { appliedMutants: new Map(), placer });99    }100  }101  /**102   * Don't traverse import declarations, decorators and nodes that don't have overlap with the selected mutation ranges103   */104  function shouldSkip(path: NodePath) {105    return (106      isTypeNode(path) ||107      isImportDeclaration(path) ||108      path.isDecorator() ||109      (mutantRangesForCurrentFile.length && mutantRangesForCurrentFile.every((range) => !locationOverlaps(range, path.node.loc!)))110    );111  }112  /**113   * Place mutants that are assigned to the current node path (on exit)114   */115  function placeMutantsIfNeeded(path: NodePath<types.Node>) {116    const mutantsPlacement = placementMap.get(path.node);117    if (mutantsPlacement?.appliedMutants.size) {118      try {119        mutantsPlacement.placer.place(path, mutantsPlacement.appliedMutants);120        path.skip();121      } catch (error) {122        throwPlacementError(error as Error, path, mutantsPlacement.placer, [...mutantsPlacement.appliedMutants.keys()], originFileName);123      }124    }125  }126  /**127   * Collect the mutants for the current node and return the non-ignored.128   */129  function collectMutants(path: NodePath) {...

Using AI Code Generation

1var placeMutantsIfNeeded = require('stryker-parent').placeMutantsIfNeeded;2    {3        originalLines: 'var a = false;',4        mutatedLines: 'var a = true;'5    },6    {7        originalLines: 'var a = false;',8        mutatedLines: 'var a = true;'9    }10];11placeMutantsIfNeeded(mutants, 'test.js');12var placeMutantsIfNeeded = require('stryker-parent').placeMutantsIfNeeded;13    {14        originalLines: 'var a = false;',15        mutatedLines: 'var a = true;'16    },17    {18        originalLines: 'var a = false;',19        mutatedLines: 'var a = true;'20    }21];22placeMutantsIfNeeded(mutants, 'test.js');23var placeMutantsIfNeeded = require('stryker-parent').placeMutantsIfNeeded;24    {25        originalLines: 'var a = false;',26        mutatedLines: 'var a = true;'27    },28    {

Using AI Code Generation

1var path = require('path');2var stryker = require('stryker');3var strykerConfig = require('./stryker.conf.js');4var placeMutants = require('stryker-parent').placeMutantsIfNeeded;5var log = require('stryker-api').logging.getLogger('test');6var test = require('tape');7var fs = require('fs');8var mutate = require('./mutate.js');9var childProcess = require('child_process');10var async = require('async');11var Promise = require('bluebird');12var tmp = require('tmp');13var _ = require('lodash');14var strykerTmpDir = path.join(process.cwd(), '.stryker-tmp');15];16];17var strykerConfig = {18};19var strykerOptions = {20};21var stryker = new stryker.Stryker(strykerOptions, strykerConfig);22test('should place mutants in files', function(t) {23  placeMutants(stryker, strykerTmpDir).then(function() {24    t.pass('Mutants placed');25    t.end();26  }).catch(function(err) {27    t.fail(err);28    t.end();29  });30});31test('should run mocha tests', function(t) {32  var mutant = {33  };34  var expectedOutput = '1 passing (5ms)';35  mutate(mutant).then(function() {36    var mocha = childProcess.spawn('mocha', ['test.js'], {cwd: strykerTmpDir});37    var output = '';38    mocha.stdout.on('data',

Using AI Code Generation

1var strykerParent = require('stryker-parent');2var mutants = [ { mutatorName: 'BinaryExpression' }, { mutatorName: 'BinaryExpression' } ];3var files = [ { path: 'test.js', mutated: true } ];4var result = strykerParent.placeMutantsIfNeeded(mutants, files);5console.log(result);6[ { mutatorName: 'BinaryExpression',7    range: [ 0, 0 ] },8  { mutatorName: 'BinaryExpression',9    range: [ 0, 0 ] } ]10var strykerParent = require('stryker-parent');11var mutants = [ { mutatorName: 'BinaryExpression' }, { mutatorName: 'BinaryExpression' } ];12var files = [ { path: 'test.js', mutated: true }, { path: 'source.js', mutated: false } ];13var result = strykerParent.placeMutantsIfNeeded(mutants, files);14console.log(result);15[ { mutatorName: 'BinaryExpression',16    range: [ 0, 0 ] },17  { mutatorName: 'BinaryExpression',

Using AI Code Generation

1const { placeMutantsIfNeeded } = require('stryker-parent');2const { testRunner } = require('stryker-api/test_runner');3const { TestStatus } = require('stryker-api/test_runner');4const { MutantStatus } = require('stryker-api/report');5const { StrykerOptions } = require('stryker-api/core');6const { TestResult } = require('stryker-api/test_runner');7const { placeMutantsIfNeeded } = require('stryker-parent');8const { testRunner } = require('stryker-api/test_runner');9const { TestStatus } = require('stryker-api/test_runner');10const { MutantStatus } = require('stryker-api/report');11const { StrykerOptions } = require('stryker-api/core');12const { TestResult } = require('stryker-api/test_runner');13describe('Test runner', () => {14  let options: StrykerOptions = { files: [], mutate: [], port: 0 };15  beforeEach(() => {16    placeMutantsIfNeeded(options);17  });18  it('should report a killed mutant', async () => {19    const testResult = await testRunner.run({ testFilter: ['1'] });20    expect(testResult.status).eq(TestStatus.Success);21    expect(testResult.tests).lengthOf(1);22    expect(testResult.tests[0].name).eq('1');23    expect(testResult.tests[0].status).eq(MutantStatus.Killed);24  });25  it('should report a survived mutant', async () => {26    const testResult = await testRunner.run({ testFilter: ['2'] });27    expect(testResult.status).eq(TestStatus.Success);28    expect(testResult.tests).lengthOf(1);29    expect(testResult.tests[0].name).eq('2');30    expect(testResult.tests[0].status).eq(MutantStatus.Survived);31  });32  it('should report a timeout mutant', async () => {33    const testResult = await testRunner.run({ testFilter: ['3'] });34    expect(testResult.status).eq(TestStatus.Success);35    expect(testResult.tests).lengthOf(1);36    expect(testResult.tests[0].name).eq('3');37    expect(testResult.tests[0].status).eq(MutantStatus.TimedOut);38  });39  it('should report an error mutant', async ()

Using AI Code Generation

1var stryker = require('stryker-parent');2var mutants = stryker.placeMutantsIfNeeded();3console.log(mutants);4var stryker = require('stryker-parent');5var mutants = stryker.placeMutantsIfNeeded();6console.log(mutants);7var stryker = require('stryker-parent');8var mutants = stryker.placeMutantsIfNeeded();9console.log(mutants);10var stryker = require('stryker-parent');11var mutants = stryker.placeMutantsIfNeeded();12console.log(mutants);13var stryker = require('stryker-parent');14var mutants = stryker.placeMutantsIfNeeded();15console.log(mutants);16var stryker = require('stryker-parent');17var mutants = stryker.placeMutantsIfNeeded();18console.log(mutants);19var stryker = require('stryker-parent');20var mutants = stryker.placeMutantsIfNeeded();21console.log(mutants);22var stryker = require('stryker-parent');23var mutants = stryker.placeMutantsIfNeeded();24console.log(mutants);25var stryker = require('stryker-parent');26var mutants = stryker.placeMutantsIfNeeded();27console.log(mutants);

Using AI Code Generation

1var stryker = require('stryker-parent');2var sut = require('./sut.js');3var mutants = [{mutatorName: 'StringLiteral', replacement: 'foo'}];4var test = 'bar';5var result = stryker.placeMutantsIfNeeded(mutants, sut, test);6module.exports = function (foo) {7  return foo;8};9var estraverse = require('estraverse');10var esprima = require('esprima');11var escodegen = require('escodegen');12var estraverse = require('estraverse');13var esprima = require('esprima');14var escodegen = require('escodegen');15function placeMutantsIfNeeded(mutants, sut, test) {16  var ast = esprima.parse(sut.toString());17  mutants.forEach(function (mutant) {18    estraverse.replace(ast, {19      enter: function (node, parent) {20        if (node.type === 'Literal' && node.value === test) {21          node.value = mutant.replacement;22          return node;23        }24      }25    });26  });27  return escodegen.generate(ast);28}29module.exports = {30};31var stryker = require('stryker');32stryker.runMutationTest({33});34{35  "scripts": {36  },37  "devDependencies": {

Using AI Code Generation

1var stryker = require('stryker-parent');2var path = require('path');3var fs = require('fs');4var input = {5    files: [{6        path: path.join(__dirname, 'test.js'),7    }],8};9stryker.placeMutantsIfNeeded(input)10    .then(function () {11        console.log('Mutants placed in the mutants folder');12    })13    .catch(function (error) {14        console.log(error);15    });16var stryker = require('stryker');17var path = require('path');18var fs = require('fs');19var input = {20    files: [{21        path: path.join(__dirname, 'test.js'),22    }],23};24var strykerOptions = new stryker.StrykerOptions(input);25var stryker = new stryker.Stryker(strykerOptions);26stryker.runMutationTest()27    .then(function (result) {28        console.log('Mutation test run successfully');29    })30    .catch(function (error) {31        console.log(error);32    });

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