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How to use fsTestDouble method in stryker-parent

Best JavaScript code snippet using stryker-parent

sandbox.spec.ts

Source:sandbox.spec.ts

1import path from 'path';2import type { execaNode } from 'execa';3import { npmRunPathEnv } from 'npm-run-path';4import { expect } from 'chai';5import sinon from 'sinon';6import { testInjector, factory } from '@stryker-mutator/test-helpers';7import { I, normalizeWhitespaces } from '@stryker-mutator/util';8import { FileDescriptions } from '@stryker-mutator/api/src/core/file-description.js';9import { Sandbox } from '../../../src/sandbox/sandbox.js';10import { coreTokens } from '../../../src/di/index.js';11import { TemporaryDirectory } from '../../../src/utils/temporary-directory.js';12import { fileUtils } from '../../../src/utils/file-utils.js';13import { UnexpectedExitHandler } from '../../../src/unexpected-exit-handler.js';14import { Project } from '../../../src/fs/index.js';15import { FileSystemTestDouble } from '../../helpers/file-system-test-double.js';16describe(Sandbox.name, () => {17  let temporaryDirectoryMock: sinon.SinonStubbedInstance<TemporaryDirectory>;18  let symlinkJunctionStub: sinon.SinonStub;19  let findNodeModulesListStub: sinon.SinonStub;20  let execaCommandMock: sinon.SinonStubbedInstance<I<typeof execaNode>>;21  let unexpectedExitHandlerMock: sinon.SinonStubbedInstance<I<UnexpectedExitHandler>>;22  let moveDirectoryRecursiveSyncStub: sinon.SinonStub;23  let fsTestDouble: FileSystemTestDouble;24  const SANDBOX_WORKING_DIR = path.resolve('.stryker-tmp/sandbox-123');25  const BACKUP_DIR = 'backup-123';26  beforeEach(() => {27    temporaryDirectoryMock = sinon.createStubInstance(TemporaryDirectory);28    temporaryDirectoryMock.getRandomDirectory.withArgs('sandbox').returns(SANDBOX_WORKING_DIR).withArgs('backup').returns(BACKUP_DIR);29    symlinkJunctionStub = sinon.stub(fileUtils, 'symlinkJunction');30    findNodeModulesListStub = sinon.stub(fileUtils, 'findNodeModulesList');31    moveDirectoryRecursiveSyncStub = sinon.stub(fileUtils, 'moveDirectoryRecursiveSync');32    execaCommandMock = sinon.stub();33    unexpectedExitHandlerMock = {34      registerHandler: sinon.stub(),35      dispose: sinon.stub(),36    };37    fsTestDouble = new FileSystemTestDouble(Object.create(null) as Record<string, string>);38    symlinkJunctionStub.resolves();39    findNodeModulesListStub.resolves(['node_modules']);40  });41  function createSut(42    project = new Project(43      fsTestDouble,44      Object.keys(fsTestDouble.files).reduce<FileDescriptions>((fileDescriptions, fileName) => {45        fileDescriptions[fileName] = { mutate: true };46        return fileDescriptions;47        // eslint-disable-next-line @typescript-eslint/no-unsafe-argument48      }, Object.create(null))49    )50  ): Sandbox {51    return testInjector.injector52      .provideValue(coreTokens.project, project)53      .provideValue(coreTokens.temporaryDirectory, temporaryDirectoryMock)54      .provideValue(coreTokens.execa, execaCommandMock as unknown as typeof execaNode)55      .provideValue(coreTokens.unexpectedExitRegistry, unexpectedExitHandlerMock)56      .injectClass(Sandbox);57  }58  describe('init()', () => {59    describe('with inPlace = false', () => {60      beforeEach(() => {61        testInjector.options.inPlace = false;62      });63      it('should have created a sandbox folder', async () => {64        const sut = createSut();65        await sut.init();66        expect(temporaryDirectoryMock.getRandomDirectory).calledWith('sandbox');67        expect(temporaryDirectoryMock.createDirectory).calledWith(SANDBOX_WORKING_DIR);68      });69      it('should copy regular input files', async () => {70        fsTestDouble.files[path.resolve('a', 'main.js')] = 'foo("bar")';71        fsTestDouble.files[path.resolve('a', 'b.txt')] = 'b content';72        fsTestDouble.files[path.resolve('c', 'd', 'e.log')] = 'e content';73        const project = new Project(fsTestDouble, {74          [path.resolve('a', 'main.js')]: { mutate: true },75          [path.resolve('a', 'b.txt')]: { mutate: false },76          [path.resolve('c', 'd', 'e.log')]: { mutate: false },77        });78        project.files.get(path.resolve('a', 'main.js'))!.setContent('foo("mutated")');79        const sut = createSut(project);80        await sut.init();81        expect(fsTestDouble.files[path.join(SANDBOX_WORKING_DIR, 'a', 'main.js')]).eq('foo("mutated")');82        expect(fsTestDouble.files[path.join(SANDBOX_WORKING_DIR, 'a', 'b.txt')]).eq('b content');83        expect(fsTestDouble.files[path.join(SANDBOX_WORKING_DIR, 'c', 'd', 'e.log')]).eq('e content');84      });85      it('should be able to copy a local file', async () => {86        fsTestDouble.files['localFile.txt'] = 'foobar';87        const sut = createSut();88        await sut.init();89        expect(fsTestDouble.files[path.join(SANDBOX_WORKING_DIR, 'localFile.txt')]).eq('foobar');90      });91      it('should symlink node modules in sandbox directory if exists', async () => {92        const sut = createSut();93        await sut.init();94        expect(findNodeModulesListStub).calledWith(process.cwd());95        expect(symlinkJunctionStub).calledWith(path.resolve('node_modules'), path.join(SANDBOX_WORKING_DIR, 'node_modules'));96      });97    });98    describe('with inPlace = true', () => {99      beforeEach(() => {100        testInjector.options.inPlace = true;101      });102      it('should have created a backup directory', async () => {103        const sut = createSut();104        await sut.init();105        expect(temporaryDirectoryMock.getRandomDirectory).calledWith('backup');106        expect(temporaryDirectoryMock.createDirectory).calledWith(BACKUP_DIR);107      });108      it('should not override the current file if no changes were detected', async () => {109        fsTestDouble.files[path.resolve('a', 'b.txt')] = 'b content';110        const sut = createSut();111        await sut.init();112        expect(Object.keys(fsTestDouble.files)).lengthOf(1);113      });114      it('should override original file if changes were detected', async () => {115        // Arrange116        const fileName = path.resolve('a', 'b.js');117        fsTestDouble.files[fileName] = 'b content';118        const project = new Project(fsTestDouble, { [fileName]: { mutate: true } });119        project.files.get(fileName)!.setContent('b mutated content');120        // Act121        const sut = createSut(project);122        await sut.init();123        // Assert124        expect(fsTestDouble.files[fileName]).eq('b mutated content');125      });126      it('should backup the original before overriding it', async () => {127        // Arrange128        const fileName = path.resolve('a', 'b.js');129        const originalContent = 'b content';130        const mutatedContent = 'b mutated content';131        fsTestDouble.files[fileName] = originalContent;132        const project = new Project(fsTestDouble, { [fileName]: { mutate: true } });133        project.files.get(fileName)!.setContent(mutatedContent);134        const expectedBackupFileName = path.join(path.join(BACKUP_DIR, 'a'), 'b.js');135        // Act136        const sut = createSut(project);137        await sut.init();138        // Assert139        expect(fsTestDouble.files[expectedBackupFileName]).eq(originalContent);140        expect(fsTestDouble.files[fileName]).eq(mutatedContent);141      });142      it('should log the backup file location', async () => {143        // Arrange144        const fileName = path.resolve('a', 'b.js');145        const originalContent = 'b content';146        const mutatedContent = 'b mutated content';147        fsTestDouble.files[fileName] = originalContent;148        const project = new Project(fsTestDouble, { [fileName]: { mutate: true } });149        project.files.get(fileName)!.setContent(mutatedContent);150        const expectedBackupFileName = path.join(path.join(BACKUP_DIR, 'a'), 'b.js');151        // Act152        const sut = createSut(project);153        await sut.init();154        // Assert155        expect(testInjector.logger.debug).calledWith('Stored backup file at %s', expectedBackupFileName);156      });157      it('should register an unexpected exit handler', async () => {158        // Act159        const sut = createSut();160        await sut.init();161        // Assert162        expect(unexpectedExitHandlerMock.registerHandler).called;163      });164    });165    it('should symlink node modules in sandbox directory if node_modules exist', async () => {166      findNodeModulesListStub.resolves(['node_modules', 'packages/a/node_modules']);167      const sut = createSut();168      await sut.init();169      const calls = symlinkJunctionStub.getCalls();170      expect(calls[0]).calledWithExactly(path.resolve('node_modules'), path.join(SANDBOX_WORKING_DIR, 'node_modules'));171      expect(calls[1]).calledWithExactly(172        path.resolve('packages', 'a', 'node_modules'),173        path.join(SANDBOX_WORKING_DIR, 'packages', 'a', 'node_modules')174      );175    });176    it('should not symlink node_modules in sandbox directory if no node_modules exist', async () => {177      findNodeModulesListStub.resolves([]);178      const sut = createSut();179      await sut.init();180      expect(testInjector.logger.debug).calledWithMatch('Could not find a node_modules');181      expect(testInjector.logger.debug).calledWithMatch(process.cwd());182      expect(symlinkJunctionStub).not.called;183    });184    it('should log a warning if "node_modules" already exists in the working folder', async () => {185      findNodeModulesListStub.resolves(['node_modules']);186      symlinkJunctionStub.rejects(factory.fileAlreadyExistsError());187      const sut = createSut();188      await sut.init();189      expect(testInjector.logger.warn).calledWithMatch(190        normalizeWhitespaces(191          `Could not symlink "node_modules" in sandbox directory, it is already created in the sandbox.192        Please remove the node_modules from your sandbox files. Alternatively, set \`symlinkNodeModules\`193        to \`false\` to disable this warning.`194        )195      );196    });197    it('should log a warning if linking "node_modules" results in an unknown error', async () => {198      findNodeModulesListStub.resolves(['basePath/node_modules']);199      const error = new Error('unknown');200      symlinkJunctionStub.rejects(error);201      const sut = createSut();202      await sut.init();203      expect(testInjector.logger.warn).calledWithMatch(204        normalizeWhitespaces('Unexpected error while trying to symlink "basePath/node_modules" in sandbox directory.'),205        error206      );207    });208    it('should not symlink node modules in sandbox directory if `symlinkNodeModules` is `false`', async () => {209      testInjector.options.symlinkNodeModules = false;210      const sut = createSut();211      await sut.init();212      expect(symlinkJunctionStub).not.called;213      expect(findNodeModulesListStub).not.called;214    });215    it('should execute the buildCommand in the sandbox', async () => {216      testInjector.options.buildCommand = 'npm run build';217      const sut = createSut();218      await sut.init();219      expect(execaCommandMock).calledWith('npm run build', { cwd: SANDBOX_WORKING_DIR, env: npmRunPathEnv() });220      expect(testInjector.logger.info).calledWith('Running build command "%s" in "%s".', 'npm run build', SANDBOX_WORKING_DIR);221    });222    it('should not execute a build command when non is configured', async () => {223      testInjector.options.buildCommand = undefined;224      const sut = createSut();225      await sut.init();226      expect(execaCommandMock).not.called;227    });228    it('should execute the buildCommand before the node_modules are symlinked', async () => {229      // It is important to first run the buildCommand, otherwise the build dependencies are not correctly resolved230      testInjector.options.buildCommand = 'npm run build';231      const sut = createSut();232      await sut.init();233      expect(execaCommandMock).calledBefore(symlinkJunctionStub);234    });235  });236  describe('dispose', () => {237    it("shouldn't do anything when inPlace = false", () => {238      const sut = createSut();239      sut.dispose();240      expect(moveDirectoryRecursiveSyncStub).not.called;241    });242    it('should recover from the backup dir synchronously if inPlace = true', () => {243      testInjector.options.inPlace = true;244      const sut = createSut();245      sut.dispose();246      expect(moveDirectoryRecursiveSyncStub).calledWith(BACKUP_DIR, process.cwd());247    });248    it('should recover from the backup dir if stryker exits unexpectedly while inPlace = true', () => {249      testInjector.options.inPlace = true;250      const errorStub = sinon.stub(console, 'error');251      createSut();252      unexpectedExitHandlerMock.registerHandler.callArg(0);253      expect(moveDirectoryRecursiveSyncStub).calledWith(BACKUP_DIR, process.cwd());254      expect(errorStub).calledWith(`Detecting unexpected exit, recovering original files from ${BACKUP_DIR}`);255    });256  });257  describe('workingDirectory', () => {258    it('should retrieve the sandbox directory when inPlace = false', async () => {259      const sut = createSut();260      await sut.init();261      expect(sut.workingDirectory).eq(SANDBOX_WORKING_DIR);262    });263    it('should retrieve the cwd directory when inPlace = true', async () => {264      testInjector.options.inPlace = true;265      const sut = createSut();266      await sut.init();267      expect(sut.workingDirectory).eq(process.cwd());268    });269  });270  // describe(Sandbox.prototype.sandboxFileFor.name, () => {271  //   it('should return the sandbox file if exists', async () => {272  //     const originalFileName = path.resolve('src/foo.js');273  //     fsTestDouble.push(new File(originalFileName, ''));274  //     const sut = createSut();275  //     await sut.init();276  //     const actualSandboxFile = sut.sandboxFileFor(originalFileName);277  //     expect(actualSandboxFile).eq(path.join(SANDBOX_WORKING_DIR, 'src/foo.js'));278  //   });279  //   it("should throw when the sandbox file doesn't exists", async () => {280  //     const notExistingFile = 'src/bar.js';281  //     fsTestDouble.push(new File(path.resolve('src/foo.js'), ''));282  //     const sut = createSut();283  //     await sut.init();284  //     expect(() => sut.sandboxFileFor(notExistingFile)).throws('Cannot find sandbox file for src/bar.js');285  //   });286  // });287  describe(Sandbox.prototype.originalFileFor.name, () => {288    it('should remap the file to the original', async () => {289      const sut = createSut();290      await sut.init();291      const sandboxFile = path.join(SANDBOX_WORKING_DIR, 'src/foo.js');292      expect(sut.originalFileFor(sandboxFile)).eq(path.resolve('src/foo.js'));293    });294  });...

ts-config-preprocessor.spec.ts

Source:ts-config-preprocessor.spec.ts

1import path from 'path';2import { expect } from 'chai';3import { testInjector } from '@stryker-mutator/test-helpers';4import { TSConfigPreprocessor } from '../../../src/sandbox/ts-config-preprocessor.js';5import { FileSystemTestDouble } from '../../helpers/file-system-test-double.js';6import { Project } from '../../../src/fs/project.js';7import { serializeTSConfig } from '../../helpers/producers.js';8describe(TSConfigPreprocessor.name, () => {9  let fsTestDouble: FileSystemTestDouble;10  let sut: TSConfigPreprocessor;11  const tsconfigFileName = path.resolve('tsconfig.json');12  beforeEach(() => {13    fsTestDouble = new FileSystemTestDouble();14    sut = testInjector.injector.injectClass(TSConfigPreprocessor);15  });16  it('should not do anything if the tsconfig file does not exist', async () => {17    fsTestDouble.files['foo.js'] = 'console.log("foo");';18    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());19    await sut.preprocess(project);20    expect(project.files.size).eq(1);21    expect(await project.files.get('foo.js')!.readContent()).eq('console.log("foo");');22  });23  it('should ignore missing "extends"', async () => {24    // Arrange25    const tsconfigInput = serializeTSConfig({ extends: './tsconfig.src.json' });26    fsTestDouble.files[tsconfigFileName] = tsconfigInput;27    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());28    // Act29    await sut.preprocess(project);30    // Assert31    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(tsconfigInput);32  });33  it('should ignore missing "references"', async () => {34    // Arrange35    const tsconfigInput = serializeTSConfig({ references: [{ path: './tsconfig.src.json' }] });36    fsTestDouble.files[tsconfigFileName] = tsconfigInput;37    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());38    // Act39    await sut.preprocess(project);40    // Assert41    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(tsconfigInput);42  });43  it('should rewrite "extends" if it falls outside of sandbox', async () => {44    // Arrange45    const tsconfigInput = serializeTSConfig({ extends: '../tsconfig.settings.json' });46    fsTestDouble.files[tsconfigFileName] = tsconfigInput;47    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());48    // Act49    await sut.preprocess(project);50    // Assert51    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(serializeTSConfig({ extends: '../../../tsconfig.settings.json' }));52  });53  it('should rewrite "references" if it falls outside of sandbox', async () => {54    // Arrange55    fsTestDouble.files[tsconfigFileName] = serializeTSConfig({ references: [{ path: '../model' }] });56    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());57    // Act58    await sut.preprocess(project);59    // Assert60    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(61      serializeTSConfig({ references: [{ path: '../../../model/tsconfig.json' }] })62    );63  });64  it('should rewrite "include" array items located outside of the sandbox', async () => {65    // See https://github.com/stryker-mutator/stryker-js/issues/328166    fsTestDouble.files[tsconfigFileName] = serializeTSConfig({67      include: ['./**/*', '../../../node_modules/self-service-server/lib/main/shared/@types/**/*.d.ts'],68    });69    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());70    await sut.preprocess(project);71    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(72      serializeTSConfig({73        include: ['./**/*', '../../../../../node_modules/self-service-server/lib/main/shared/@types/**/*.d.ts'],74      })75    );76  });77  it('should rewrite "exclude" array items located outside of the sandbox', async () => {78    fsTestDouble.files[tsconfigFileName] = serializeTSConfig({79      exclude: ['./**/*', '../foo.ts'],80    });81    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());82    await sut.preprocess(project);83    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(84      serializeTSConfig({85        exclude: ['./**/*', '../../../foo.ts'],86      })87    );88  });89  it('should rewrite "files" array items located outside of the sandbox', async () => {90    // See https://github.com/stryker-mutator/stryker-js/issues/328191    fsTestDouble.files[tsconfigFileName] = serializeTSConfig({92      files: ['foo/bar.ts', '../global.d.ts'],93    });94    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());95    await sut.preprocess(project);96    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(97      serializeTSConfig({98        files: ['foo/bar.ts', '../../../global.d.ts'],99      })100    );101  });102  it('should not do anything when inPlace = true', async () => {103    testInjector.options.inPlace = true;104    const tsconfigInput = serializeTSConfig({ extends: '../tsconfig.settings.json' });105    fsTestDouble.files[tsconfigFileName] = tsconfigInput;106    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());107    await sut.preprocess(project);108    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(tsconfigInput);109  });110  it('should support comments and other settings', async () => {111    fsTestDouble.files[tsconfigFileName] = `{112       "extends": "../tsconfig.settings.json",113       "compilerOptions": {114         // Here are the options115         "target": "es5", // and a trailing comma116       }117      }`;118    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());119    await sut.preprocess(project);120    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(121      serializeTSConfig({ extends: '../../../tsconfig.settings.json', compilerOptions: { target: 'es5' } })122    );123  });124  it('should rewrite referenced tsconfig files that are also located in the sandbox', async () => {125    // Arrange126    fsTestDouble.files[tsconfigFileName] = serializeTSConfig({ extends: './tsconfig.settings.json', references: [{ path: './src' }] });127    fsTestDouble.files[path.resolve('tsconfig.settings.json')] = serializeTSConfig({ extends: '../../tsconfig.root-settings.json' });128    fsTestDouble.files[path.resolve('src/tsconfig.json')] = serializeTSConfig({ references: [{ path: '../../model' }] });129    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());130    // Act131    await sut.preprocess(project);132    // Assert133    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(134      serializeTSConfig({ extends: './tsconfig.settings.json', references: [{ path: './src' }] })135    );136    expect(await project.files.get(path.resolve('tsconfig.settings.json'))!.readContent()).eq(137      serializeTSConfig({ extends: '../../../../tsconfig.root-settings.json' })138    );139    expect(await project.files.get(path.resolve('src/tsconfig.json'))!.readContent()).eq(140      serializeTSConfig({ references: [{ path: '../../../../model/tsconfig.json' }] })141    );142  });143  it('should be able to rewrite a monorepo style project', async () => {144    // Arrange145    fsTestDouble.files[path.resolve('tsconfig.root.json')] = serializeTSConfig({146      extends: '../../tsconfig.settings.json',147      references: [{ path: 'src' }, { path: 'test/tsconfig.test.json' }],148    });149    fsTestDouble.files[path.resolve('src/tsconfig.json')] = serializeTSConfig({150      extends: '../../../tsconfig.settings.json',151      references: [{ path: '../../model' }],152    });153    fsTestDouble.files[path.resolve('test/tsconfig.test.json')] = serializeTSConfig({154      extends: '../tsconfig.root.json',155      references: [{ path: '../src' }],156    });157    testInjector.options.tsconfigFile = 'tsconfig.root.json';158    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());159    // Act160    await sut.preprocess(project);161    // Assert162    expect(await project.files.get(path.resolve('tsconfig.root.json'))!.readContent()).eq(163      serializeTSConfig({164        extends: '../../../../tsconfig.settings.json',165        references: [{ path: 'src' }, { path: 'test/tsconfig.test.json' }],166      })167    );168    expect(await project.files.get(path.resolve('src/tsconfig.json'))!.readContent()).eq(169      serializeTSConfig({170        extends: '../../../../../tsconfig.settings.json',171        references: [{ path: '../../../../model/tsconfig.json' }],172      })173    );174    expect(await project.files.get(path.resolve('test/tsconfig.test.json'))!.readContent()).eq(175      serializeTSConfig({ extends: '../tsconfig.root.json', references: [{ path: '../src' }] })176    );177  });...

create-preprocessor.spec.ts

Source:create-preprocessor.spec.ts

1import path from 'path';2import { testInjector } from '@stryker-mutator/test-helpers';3import { expect } from 'chai';4import { FilePreprocessor, createPreprocessor } from '../../../src/sandbox/index.js';5import { FileSystemTestDouble } from '../../helpers/file-system-test-double.js';6import { serializeTSConfig } from '../../helpers/producers.js';7import { Project } from '../../../src/fs/index.js';8describe(createPreprocessor.name, () => {9  let fsTestDouble: FileSystemTestDouble;10  let sut: FilePreprocessor;11  beforeEach(() => {12    fsTestDouble = new FileSystemTestDouble();13    sut = testInjector.injector.injectFunction(createPreprocessor);14  });15  it('should rewrite tsconfig files', async () => {16    // Arrange17    const tsconfigFileName = path.resolve('tsconfig.json');18    const tsconfigInput = serializeTSConfig({ extends: '../tsconfig.settings.json' });19    fsTestDouble.files[tsconfigFileName] = tsconfigInput;20    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());21    // Act22    await sut.preprocess(project);23    // Assert24    expect(await project.files.get(tsconfigFileName)!.readContent()).eq(serializeTSConfig({ extends: '../../../tsconfig.settings.json' }));25  });26  it('should disable type checking for .ts files', async () => {27    const fileName = path.resolve('src/app.ts');28    fsTestDouble.files[fileName] = 'foo.bar()';29    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());30    await sut.preprocess(project);31    expect(await project.files.get(fileName)!.readContent()).eq('// @ts-nocheck\nfoo.bar()');32  });33  it('should strip // @ts-expect-error (see https://github.com/stryker-mutator/stryker-js/issues/2364)', async () => {34    const fileName = path.resolve('src/app.ts');35    fsTestDouble.files[fileName] = '// @ts-expect-error\nfoo.bar()';36    const project = new Project(fsTestDouble, fsTestDouble.toFileDescriptions());37    await sut.preprocess(project);38    expect(await project.files.get(fileName)!.readContent()).eq('// @ts-nocheck\n// \nfoo.bar()');39  });...

Using AI Code Generation

1const fs = require('fs');2const fsTestDouble = require('stryker-parent').fsTestDouble;3fsTestDouble(fs);4const fs = require('fs');5const fsTestDouble = require('stryker').fsTestDouble;6fsTestDouble(fs);7const fs = require('fs');8const fsTestDouble = require('stryker').fsTestDouble;9fsTestDouble(fs);10const fs = require('fs');11const fsTestDouble = require('stryker').fsTestDouble;12fsTestDouble(fs);13const fs = require('fs');14const fsTestDouble = require('stryker').fsTestDouble;15fsTestDouble(fs);16const fs = require('fs');17const fsTestDouble = require('stryker').fsTestDouble;18fsTestDouble(fs);19const fs = require('fs');20const fsTestDouble = require('stryker').fsTestDouble;21fsTestDouble(fs);22const fs = require('fs');23const fsTestDouble = require('stryker').fsTestDouble;24fsTestDouble(fs);25const fs = require('fs');26const fsTestDouble = require('stryker').fsTestDouble;27fsTestDouble(fs);28const fs = require('fs');29const fsTestDouble = require('stryker').fsTestDouble;30fsTestDouble(fs);31const fs = require('fs');32const fsTestDouble = require('stryker').fsTestDouble;33fsTestDouble(fs);

Using AI Code Generation

1var fsTestDouble = require('stryker-parent').fsTestDouble;2fsTestDouble.stub('fs', 'readdirSync', function() {3    return ['file1.js', 'file2.js'];4});5var files = fs.readdirSync('.');6console.log(files);7module.exports = {8    fsTestDouble: require('./lib/fsTestDouble')9};10var testDouble = require('testdouble');11module.exports = {12    stub: function() {13        testDouble.stub.apply(testDouble, arguments);14    }15};16var testDouble = require('testdouble');17module.exports = {18    stub: function() {19        testDouble.stub.apply(testDouble, arguments);20    }21};22module.exports = {23    stub: function() {24        var testDouble = require('testdouble');25        testDouble.stub.apply(testDouble, arguments);26    }27};28var testDouble;29module.exports = {30    stub: function() {31        if (!testDouble) {32            testDouble = require('testdouble');33        }34        testDouble.stub.apply(testDouble, arguments);35    }36};37var testDouble;38module.exports = {39    stub: function() {40        if (!testDouble

Using AI Code Generation

1import { fsTestDouble } from 'stryker-parent';2import { fsTestDouble } from 'stryker-parent';3When you want to use the fsTestDouble method in your test file, you can import it from the stryker-parent package. The fsTestDouble method is a function that returns a mock of the fs module. This mock is based on the fs-extra library. You can use the fsTestDouble method in your test files to mock the fs module. For example:4import { fsTestDouble } from 'stryker-parent';5import { fsTestDouble } from 'stryker-parent';6import { fsTestDouble } from 'stryker-parent';7import { fsTestDouble } from 'stryker-parent';8When you want to use the fsTestDouble method in your test file, you can import it from the stryker-parent package. The fsTestDouble method is a function that returns a mock of the fs module. This mock is based on the fs-extra library. You can use the fsTestDouble method in your test files to mock the fs module. For example:9import { fsTestDouble } from 'stryker-parent';10import { fsTestDouble } from 'stryker-parent';11import { fsTestDouble } from 'stryker-parent';12import { fsTestDouble } from 'stryker-parent';13When you want to use the fsTestDouble method in your test file, you can import it from the stryker-parent package. The fsTestDouble method is a function that returns a mock of the fs module. This mock is based on the fs-extra library. You can use the fsTestDouble method in your test files to mock the fs module. For example:14import { fsTestDouble } from 'stryker-parent';15import { fsTestDouble } from 'stryker-parent';16import { fsTest

Using AI Code Generation

1const fsTestDouble = require('stryker-parent').fsTestDouble;2const fs = require('fs');3const path = require('path');4const testDir = path.join(__dirname, 'test');5  .init()6  .then(() => {7    fs.mkdirSync(testDir);8    fs.writeFileSync(path.join(testDir, 'test.txt'), 'test');9  });10module.exports = function(config) {11  config.set({12    commandRunner: {13    }14  });15};16The fsTestDouble.getTempFolder() method will return the temporary directory. You can use this to create a file in the temporary directory. For example:17fs.writeFileSync(path.join(fsTestDouble.getTempFolder(), 'test.txt'), 'test');18The fsTestDouble.getOriginalWorkingDirectory() method will return the original working directory. You can use this to create a file in the original working directory. For example:19fs.writeFileSync(path.join(fsTestDouble.getOriginalWorkingDirectory(), 'test.txt'), 'test');20The fsTestDouble.getOriginalNodePath() method will return the original NODE_PATH. You can use this to create a file in the original directory. For example:21fs.writeFileSync(path.join(fsTestDouble.getOriginalNodePath(), 'test.txt'), 'test');22The fsTestDouble.getOriginalCwd() method will return the original cwd. You can use this to create a file in the original directory. For example:23fs.writeFileSync(path.join(fsTestDouble.getOriginalCwd(), 'test.txt'), 'test');24The fsTestDouble.getOriginalEnv() method will return the original environment variables. You can use this to create a file in the original directory. For example:25fs.writeFileSync(path.join(fsTestDouble.getOriginalEnv().MY_VAR, 'test.txt'), 'test');

Using AI Code Generation

1const fs = require('fs');2const fsTestDouble = require('stryker-parent').fsTestDouble;3fsTestDouble.mock({4});5describe('foo', () => {6  it('should do bar', () => {7    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');8  });9});10describe('foo', () => {11  it('should do bar', () => {12    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');13  });14});15describe('foo', () => {16  it('should do bar', () => {17    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');18  });19});20describe('foo', () => {21  it('should do bar', () => {22    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');23  });24});25describe('foo', () => {26  it('should do bar', () => {27    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');28  });29});30describe('foo', () => {31  it('should do bar', () => {32    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');33  });34});35describe('foo', () => {36  it('should do bar', () => {37    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');38  });39});40describe('foo', () => {41  it('should do bar', () => {42    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');43  });44});45describe('foo', () => {46  it('should do bar', () => {47    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');48  });49});50describe('foo', () => {51  it('should do bar', () => {52    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');53  });54});55describe('foo', () => {56  it('should do bar', () => {57    expect(fs.readFileSync('foo/bar').toString()).to.equal('some content');58  });59});60describe('foo', () => {61  it('should do bar', () => {62    expect(fs.readFileSync('foo/bar').toString()).to.equal('

Using AI Code Generation

1const fs = require('fs');2const fsTestDouble = require('stryker-parent/fsTestDouble');3const assert = require('assert');4describe('fsTestDouble', function() {5  it('should be a function', function() {6    assert.equal(typeof fsTestDouble, 'function');7  });8  it('should return a double of fs', function() {9    assert.equal(fsTestDouble(), fs);10  });11});

Automation Testing Tutorials

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