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How to use expectJSMutation method in stryker-parent

Best JavaScript code snippet using stryker-parent

string-literal-mutator.spec.ts

Source:string-literal-mutator.spec.ts

...6    expect(sut.name).eq('StringLiteral');7  });8  describe('string literals', () => {9    it('should mutate a string literal with double quotes', () => {10      expectJSMutation(sut, 'const b = "Hello world!";', 'const b = "";');11    });12    it('should mutate a string literal with single quotes', () => {13      expectJSMutation(sut, "const b = 'Hello world!';", 'const b = "";');14    });15    it('should mutate a template string', () => {16      expectJSMutation(sut, 'const b = `Hello world!`;', 'const b = ``;');17    });18    it('should mutate a template string referencing another variable', () => {19      expectJSMutation(sut, 'const a = 10; const b = `${a} mutations`;', 'const a = 10; const b = ``;');20      expectJSMutation(sut, 'const a = 10; const b = `mutations: ${a}`;', 'const a = 10; const b = ``;');21      expectJSMutation(sut, 'const a = 10; const b = `mutations: ${a} out of 10`;', 'const a = 10; const b = ``;');22    });23    it('should mutate empty strings', () => {24      expectJSMutation(sut, 'const b = "";', 'const b = "Stryker was here!";');25    });26    it('should mutate empty template strings', () => {27      expectJSMutation(sut, 'const b = ``;', 'const b = `Stryker was here!`;');28    });29    it('should not mutate directive prologues', () => {30      expectJSMutation(sut, '"use strict";"use asm";');31      expectJSMutation(sut, 'function a() {"use strict";"use asm";}');32    });33  });34  describe('imports/exports', () => {35    it('should not mutate import statements', () => {36      expectJSMutation(sut, 'import * as foo from "foo";');37      expectJSMutation(sut, 'import { foo } from "foo";');38      expectJSMutation(sut, 'import foo from "foo";');39      expectJSMutation(sut, 'import "foo";');40    });41    it('should not mutate require call statements', () => {42      expectJSMutation(sut, 'require("./lib/square");');43    });44    it('should mutate other call statements', () => {45      expectJSMutation(sut, 'require2("./lib/square");', 'require2("");');46    });47    it('should not mutate export statements', () => {48      expectJSMutation(sut, 'export * from "./foo";');49      expectJSMutation(sut, 'export { foo as boo } from "./foo";');50    });51  });52  describe('type declarations', () => {53    it('should not mutate type declarations', () => {54      expectJSMutation(sut, 'const a: "hello" = "hello";', 'const a: "hello" = "";');55      expectJSMutation(sut, 'const a: Record<"id", number> = { id: 10 }');56    });57    // interfaces itself are skipped entirely by the babel-transformer58  });59  describe('object properties', () => {60    it('should not mutate inside object property keys', () => {61      expectJSMutation(sut, 'const { className, "aria-label": label } = props;');62    });63    it('should not mutate inside object property keys', () => {64      expectJSMutation(sut, 'const foo = { className, ["aria-label"]: label };');65    });66    it('should still mutate inside object property values', () => {67      expectJSMutation(sut, 'const foo = { bar: "baz" };', 'const foo = { bar: "" };');68    });69    it('should not mutate class property keys', () => {70      expectJSMutation(sut, 'class Foo { "baz-bar" = 4; }');71    });72    it('should not mutate method names', () => {73      expectJSMutation(sut, 'const watchers = {"category.type"(categoryType) { }}');74    });75    it('should mutate class property values', () => {76      expectJSMutation(sut, 'class Foo { bar = "4"; }', 'class Foo { bar = ""; }');77    });78  });79  describe('jsx', () => {80    it('should not mutate string JSX attributes', () => {81      expectJSMutation(sut, '<Record class="row" />');82    });83  });...

uva-mutator.spec.ts

Source:uva-mutator.spec.ts

...5  it('should have name "UvaMutator"', () => {6    expect(sut.name).eq('UvaMutator');7  });8  it('should mutate += and -=', () => {9    expectJSMutation(sut, 'a += b', 'a -= b');10    expectJSMutation(sut, 'a -= b', 'a += b');11  });12  it('should mutate *=, %= and /=', () => {13    expectJSMutation(sut, 'a *= b', 'a /= b');14    expectJSMutation(sut, 'a /= b', 'a *= b');15    expectJSMutation(sut, 'a %= b', 'a *= b');16  });17  it('should mutate *=, %= and /=', () => {18    expectJSMutation(sut, 'a *= b', 'a /= b');19    expectJSMutation(sut, 'a /= b', 'a *= b');20    expectJSMutation(sut, 'a %= b', 'a *= b');21  });22  it('should mutate <<=, >>=, &= and |=', () => {23    expectJSMutation(sut, 'a *= b', 'a /= b');24    expectJSMutation(sut, 'a /= b', 'a *= b');25    expectJSMutation(sut, 'a %= b', 'a *= b');26  });27  it('should mutate &&=, ||= and ??=', () => {28    expectJSMutation(sut, 'a &&= b', 'a ||= b');29    expectJSMutation(sut, 'a ||= b', 'a &&= b');30    expectJSMutation(sut, 'a ??= b', 'a &&= b');31  });32  it('should not mutate a string literal unless it is &&=, ||=, ??=', () => {33    expectJSMutation(sut, 'a += "b"');34    expectJSMutation(sut, 'a -= "b"');35    expectJSMutation(sut, 'a *= "b"');36    expectJSMutation(sut, 'a /= "b"');37    expectJSMutation(sut, 'a %= "b"');38    expectJSMutation(sut, 'a <<= "b"');39    expectJSMutation(sut, 'a >>= "b"');40    expectJSMutation(sut, 'a &= "b"');41    expectJSMutation(sut, 'a |= "b"');42  });43  it('should mutate a string literal using &&=, ||=, ??=', () => {44    expectJSMutation(sut, 'a &&= "b"', 'a ||= "b"');45    expectJSMutation(sut, 'a ||= "b"', 'a &&= "b"');46    expectJSMutation(sut, 'a ??= "b"', 'a &&= "b"');47  });48  it('should not mutate string template unless it is &&=, ||=, ??=', () => {49    expectJSMutation(sut, 'a += `b`');50    expectJSMutation(sut, 'a -= `b`');51    expectJSMutation(sut, 'a *= `b`');52    expectJSMutation(sut, 'a /= `b`');53    expectJSMutation(sut, 'a %= `b`');54    expectJSMutation(sut, 'a <<= `b`');55    expectJSMutation(sut, 'a >>= `b`');56    expectJSMutation(sut, 'a &= `b`');57    expectJSMutation(sut, 'a |= `b`');58  });59  it('should mutate string template using &&=, ||=, ??=', () => {60    expectJSMutation(sut, 'a &&= `b`', 'a ||= `b`');61    expectJSMutation(sut, 'a ||= `b`', 'a &&= `b`');62    expectJSMutation(sut, 'a ??= `b`', 'a &&= `b`');63  });...

Using AI Code Generation

1const expectJSMutation = require('stryker-parent').expectJSMutation;2const expectJSMutation = require('stryker-parent').expectJSMutation;3expectJSMutation('test.js', 'myFunction', 1, function () {4    myFunction();5});6expectJSMutation('test.js', 'myFunction', 1, function () {7    myFunction();8});9const expectJSMutation = require('stryker-parent').expectJSMutation;10expectJSMutation('test.js', 'myFunction', 1, function () {11    myFunction();12});13const expectJSMutation = require('stryker-parent').expectJSMutation;14expectJSMutation('test.js', 'myFunction', 1, function () {15    myFunction();16});17const expectJSMutation = require('stryker-parent').expectJSMutation;18expectJSMutation('test.js', 'myFunction', 1, function () {19    myFunction();20});21const expectJSMutation = require('stryker-parent').expectJSMutation;22expectJSMutation('test.js', 'myFunction', 1, function () {23    myFunction();24});25const expectJSMutation = require('stryker-parent').expectJSMutation;26expectJSMutation('test.js', 'myFunction', 1, function () {27    myFunction();28});29const expectJSMutation = require('stryker-parent').expectJSMutation;30expectJSMutation('test.js', 'myFunction', 1, function () {31    myFunction();32});33const expectJSMutation = require('stryker-parent').expectJSMutation;34expectJSMutation('test.js', 'myFunction', 1, function () {35    myFunction();36});

Using AI Code Generation

1var expectJSMutation = require('stryker-parent').expectJSMutation;2var expectJSMutation = require('stryker-parent').expectJSMutation;3var expectJSMutation = require('stryker-parent').expectJSMutation;4var expectJSMutation = require('stryker-parent').expectJSMutation;5var expectJSMutation = require('stryker-parent').expectJSMutation;6var expectJSMutation = require('stryker-parent').expectJSMutation;7var expectJSMutation = require('stryker-parent').expectJSMutation;8var expectJSMutation = require('stryker-parent').expectJSMutation;9var expectJSMutation = require('stryker-parent').expectJSMutation;10var expectJSMutation = require('stryker-parent').expectJSMutation;11var expectJSMutation = require('stryker-parent').expectJSMutation;12var expectJSMutation = require('stryker-parent').expectJSMutation;13var expectJSMutation = require('stryker-parent').expectJSMutation;

Using AI Code Generation

1const { expectJSMutation } = require('stryker-parent');2const { expectJSMutation } = require('stryker-parent');3const { expectJSMutation } = require('stryker-parent');4const { expectJSMutation } = require('stryker-parent');5const { expectJSMutation } = require('stryker-parent');6const { expectJSMutation } = require('stryker-parent');7const { expectJSMutation } = require('stryker-parent');8const { expectJSMutation } = require('stryker-parent');9const { expectJSMutation } = require('stryker-parent');10const { expectJSMutation } = require('stryker-parent');11const { expectJSMutation } = require('stryker-parent');12const { expectJSMutation } = require('stryker-parent');13const { expectJSMutation } = require('stryker-parent');14const { expectJSMutation } = require('stryker-parent');15const { expectJSMutation } = require('stryker-parent');16const { expectJSMutation } = require('stryker-parent');

Using AI Code Generation

1const { expectJSMutation } = require('stryker-parent');2describe('test', () => {3  it('should fail', () => {4    expect(1).toBe(2);5  });6});7module.exports = function(config) {8  config.set({9    jest: {10      config: require('./package.json').jest11    }12  });13};14      2 | describe('test', () => {15      3 |   it('should fail', () => {16    > 4 |     expect(1).toBe(2);17      5 |   });18      6 | });19      at Object.toBe (test.js:4:14)201 test failed, 0 tests passed (1 total in 1 test suite, run time 0.5s)21    at Object.<anonymous> (C:\Users\Nico\Documents\stryker-test\node_modules\stryker\src\initializer\StrykerInquirer.js:59:15)22    at step (C:\Users\Nico\Documents\stryker-test\node_modules\stryker\src\initializer\StrykerInquirer.js:32:23)23    at Object.next (C:\Users\Nico\Documents\stryker-test\node_modules\stryker\src\initializer\StrykerInquirer.js:13:53)24    at fulfilled (C:\Users\Nico\Documents\stryker-test\node_modules\stryker\src\initializer\StrykerInquirer.js:4:58)25    at process._tickCallback (internal/process/next_tick.js:68:7)

Using AI Code Generation

1var expectJSMutation = require('stryker-parent').expectJSMutation;2describe('test', function() {3    it('should be mutated', function() {4        expectJSMutation('test.js');5    });6});7module.exports = function(config) {8    config.set({9    });10};

Using AI Code Generation

1var expectJSMutation = require('stryker-parent').expectJSMutation;2expectJSMutation('test.js', 'test', 'test2');3var expectJSMutation = require('stryker-parent').expectJSMutation;4expectJSMutation('test.js', 'test', 'test2');5var expectJSMutation = require('stryker-parent').expectJSMutation;6expectJSMutation('test.js', 'test', 'test2');7var expectJSMutation = require('stryker-parent').expectJSMutation;8expectJSMutation('test.js', 'test', 'test2');9var expectJSMutation = require('stryker-parent').expectJSMutation;10expectJSMutation('test.js', 'test', 'test2');11var expectJSMutation = require('stryker-parent').expectJSMutation;12expectJSMutation('test.js', 'test', 'test2');13var expectJSMutation = require('stryker-parent').expectJSMutation;14expectJSMutation('test.js', 'test', 'test2');15var expectJSMutation = require('stryker-parent').expectJSMutation;16expectJSMutation('test.js', 'test', 'test2');17var expectJSMutation = require('stryker-parent').expectJSMutation;18expectJSMutation('test.js', 'test', 'test2');19var expectJSMutation = require('stryker-parent').expectJSMutation;20expectJSMutation('

Using AI Code Generation

1import { expectJSMutation } from 'stryker-parent';2describe('test', () => {3  it('should pass', () => {4    expectJSMutation([5      'const x = 1;',6      'const y = 2;',7      'const z = 3;'8    ], 'const x = 2;', 'const x = 1;');9  });10});11module.exports = function (config) {12  config.set({13    jest: {14      config: require('./package.json').jest,15    },16  });17};18describe('test', () => {19  it('should pass', () => {20    expectJSMutation([21      'const x = 1;',22      'const y = 2;',23      'const z = 3;'24    ], 'const x = 2;', 'const x = 1;');25  });26});27describe('test', () => {28  it('should pass', () => {29    expectJSMutation([30      'const x = 1;',31      'const y = 2;',

Using AI Code Generation

1var expectJSMutation = require('stryker-parent').expectJSMutation;2var expect = require('chai').expect;3var assert = require('assert');4var path = require('path');5var fs = require('fs');6var _ = require('lodash');7var Stryker = require('stryker');8var TestFramework = require('stryker/src/TestFramework');9describe('Stryker', function () {10  it('should report a mutation score', function (done) {11    var stryker = new Stryker({12      files: [path.resolve(__dirname, 'test.js')],13      mutate: [path.resolve(__dirname, 'test.js')]14    });15    stryker.runMutationTest(function (result) {16      expect(result.mutationScore).to.be.above(0);17      done();18    });19  });20  it('should report a mutation score of 100% when all mutants are killed', function (done) {21    var stryker = new Stryker({22      files: [path.resolve(__dirname, 'test.js')],23      mutate: [path.resolve(__dirname, 'test.js')],24    });25    stryker.runMutationTest(function (result) {26      expect(result.mutationScore).to.be.equal(100);27      done();28    });29  });30  it('should report a mutation score of 0% when no mutants are killed', function (done) {31    var stryker = new Stryker({32      files: [path.resolve(__dirname, 'test.js')],33      mutate: [path.resolve(__dirname, 'test.js')],34    });35    stryker.runMutationTest(function (result) {36      expect(result.mutationScore).to.be.equal(0);37      done();38    });39  });40  it('should report 2 mutants when 2 mutants are added', function (done) {41    var stryker = new Stryker({42      files: [path.resolve(__dirname, 'test.js')],43      mutate: [path.resolve(__dirname, 'test.js')]44    });45    stryker.runMutationTest(function (result) {46      expect(result.mutants.length).to.be.equal(2);47      done();48    });

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