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How to use runAndEval method in Cypress

Best JavaScript code snippet using cypress

features.spec.js

Source:features.spec.js

...23    await fs.remove(outputDir)24    await fs.copy(fixturesDir, outputDir)25  })26  it('handles module interop, object spread, class properties, and async/await', async () => {27    await runAndEval('es_features_spec.js')28  })29  it('handles jsx', async () => {30    await runAndEval('jsx_spec.jsx')31  })32  it('handles mjs', async () => {33    await runAndEval('mjs_spec.mjs')34  })35  it('handles coffeescript', async () => {36    await runAndEval('coffee_spec.coffee')37  })38  it('handles import default export in coffeescript', async () => {39    await runAndEval('coffee_imports_spec.coffee')40  })41  it('handles importing .js, .json, .jsx, .mjs, and .coffee', async () => {42    await runAndEval('various_imports_spec.js')43  })44  it('shims node globals', async () => {45    await runAndEval('node_shim_spec.js')46  })47  it('shims node builtins', async () => {48    await runAndEval('node_builtins_spec.js')49  })50  it('outputs inline source map', async () => {51    const outputPath = await run('es_features_spec.js')52    const contents = await fs.readFile(outputPath)53    expect(contents.toString()).to.include('//# sourceMappingURL=data:application/json;charset=utf-8;base64')54  })55  describe('with typescript option set', () => {56    const shouldntResolve = () => {57      throw new Error('Should error, should not resolve')58    }59    const options = { typescript: require.resolve('typescript') }60    it('handles typescript (and tsconfig paths)', async () => {61      await runAndEval('ts_spec.ts', options)62    })63    it('handles tsx', async () => {64      await runAndEval('tsx_spec.tsx', options)65    })66    it('handles importing .ts and .tsx', async () => {67      await runAndEval('typescript_imports_spec.js', options)68    })69    it('handles esModuleInterop: false (default)', async () => {70      await runAndEval('typescript_esmoduleinterop_false_spec.ts', options)71    })72    it('handles esModuleInterop: true', async () => {73      await runAndEval('esmoduleinterop-true/typescript_esmoduleinterop_true_spec.ts', options)74    })75    it('errors when processing .ts file and typescript option is not set', function () {76      return run('ts_spec.ts')77      .then(shouldntResolve)78      .catch((err) => {79        expect(err.message).to.include(`You are attempting to run a TypeScript file, but do not have TypeScript installed. Ensure you have 'typescript' installed to enable TypeScript support`)80        expect(err.message).to.include('ts_spec.ts')81      })82    })83    it('errors when processing .tsx file and typescript option is not set', function () {84      return run('tsx_spec.tsx')85      .then(shouldntResolve)86      .catch((err) => {87        expect(err.message).to.include(`You are attempting to run a TypeScript file, but do not have TypeScript installed. Ensure you have 'typescript' installed to enable TypeScript support`)...

Using AI Code Generation

1describe('Test', () => {2  it('test', () => {3    cy.window().then((win) => {4      win.runAndEval('console.log("hello world")')5    })6  })7})8Cypress.on('window:before:load', (win) => {9  win.runAndEval = (code) => {10    return new Promise((resolve, reject) => {11      const script = win.document.createElement('script')12      script.onload = () => resolve()13      script.onerror = (e) => reject(e)14      win.document.documentElement.appendChild(script)15    })16  }17})

Using AI Code Generation

1Cypress.Commands.add('runAndEval', (code, options) => {2  return cy.window().then(win => {3    return win.Cypress.cy.runAndEval(code, options);4  });5});6import 'cypress-iframe';7import './commands';8Cypress.Commands.add('runAndEval', (code, options) => {9  return cy.window().then(win => {10    return win.Cypress.cy.runAndEval(code, options);11  });12});13Cypress.Commands.add('runAndEval', (code, options) => {14  return cy.window().then(win => {15    return win.Cypress.cy.runAndEval(code, options);16  });17});18Cypress.Commands.add('runAndEval', (code, options) => {19  return cy.window().then(win => {20    return win.Cypress.cy.runAndEval(code, options);21  });22});23import 'cypress-iframe';24import './commands';25Cypress.Commands.add('runAndEval', (code, options) => {26  return cy.window().then(win => {27    return win.Cypress.cy.runAndEval(code, options);28  });29});30Cypress.Commands.add('runAndEval', (code, options) => {31  return cy.window().then(win => {32    return win.Cypress.cy.runAndEval(code, options);33  });34});35Cypress.Commands.add('runAndEval', (code, options) => {36  return cy.window().then(win => {37    return win.Cypress.cy.runAndEval(code, options);38  });39});40Cypress.Commands.add('runAndEval', (code, options) => {41  return cy.window().then(win => {42    return win.Cypress.cy.runAndEval(code, options);43  });44});45Cypress.Commands.add('runAndEval', (code, options) => {46  return cy.window().then(win => {47    return win.Cypress.cy.runAndEval(code, options);48  });49});50Cypress.Commands.add('runAndEval', (code, options) => {51  return cy.window().then(win => {52    return win.Cypress.cy.runAndEval(code, options);53  });54});55Cypress.Commands.add('runAndEval', (code, options) => {56  return cy.window().then(win =>

Using AI Code Generation

1cy.runAndEval('console.log("hello world")')2cy.runAndEval('console.log("hello world")', { log: true })3cy.runAndEval('console.log("hello world")', { log: false })4cy.runAndEval('console.log("hello world")', { log: false, timeout: 10000 })5cy.runAndEval('console.log("hello world")', { log: false, timeout: 10000, interval: 5000 })6cy.runAndEval('console.log("hello world")', { log: false, timeout: 10000, interval: 5000, error: "Error" })7cy.runAndEval('console.log("hello world")', { log: false, timeout: 10000, interval: 5000, error: "Error", retry: false })8cy.runAndEval('console.log("hello world")', { log: false, timeout: 10000, interval: 5000, error: "Error", retry: false, delay: 5000 })9cy.runAndEval('console.log("hello world")', { log: false, timeout: 10000, interval: 5000, error: "Error", retry: false, delay: 5000, onRetry: () => console.log("Retrying") })10cy.runAndEval('console.log("hello world")', { log: false, timeout: 10000, interval: 5000, error: "Error", retry: false, delay: 5000, onRetry: () => console.log("Retrying"), onTimeout: () => console.log("Timeout") })

Using AI Code Generation

1runAndEval(() => {2 const a = 5;3 const b = 10;4 return a + b;5}, (result) => {6 expect(result).to.equal(15);7});

Using AI Code Generation

1cy.runAndEval(`cy.get('input').type('my name is')`)2cy.runAndEval(function () {3    cy.get('input').type('my name is')4})5cy.runAndEval(`cy.get('input').type('my name is')`, {6})7cy.runAndEval(function () {8    cy.get('input').type('my name is')9}, {10})11cy.runAndEval(`cy.get('input').type('my name is')`, {12})13cy.runAndEval(function () {14    cy.get('input').type('my name is')15}, {16})17cy.runAndEval(`cy.get('input').type('my name is')`, {18})19cy.runAndEval(function () {20    cy.get('input').type('my name is')21}, {22})23cy.runAndEval(`cy.get('input').type('my name is')`, {24})25cy.runAndEval(function () {26    cy.get('input').type('my name is')27}, {28})29cy.runAndEval(`cy.get('input').type('my name is')`, {30    onRetry: function (err) {31    }32})

Cypress Tutorial

Cypress is a renowned Javascript-based open-source, easy-to-use end-to-end testing framework primarily used for testing web applications. Cypress is a relatively new player in the automation testing space and has been gaining much traction lately, as evidenced by the number of Forks (2.7K) and Stars (42.1K) for the project. LambdaTest’s Cypress Tutorial covers step-by-step guides that will help you learn from the basics till you run automation tests on LambdaTest.

Chapters:

What is Cypress? -
Why Cypress? - Learn why Cypress might be a good choice for testing your web applications.
Features of Cypress Testing - Learn about features that make Cypress a powerful and flexible tool for testing web applications.
Cypress Drawbacks - Although Cypress has many strengths, it has a few limitations that you should be aware of.
Cypress Architecture - Learn more about Cypress architecture and how it is designed to be run directly in the browser, i.e., it does not have any additional servers.
Browsers Supported by Cypress - Cypress is built on top of the Electron browser, supporting all modern web browsers. Learn browsers that support Cypress.
Selenium vs Cypress: A Detailed Comparison - Compare and explore some key differences in terms of their design and features.
Cypress Learning: Best Practices - Take a deep dive into some of the best practices you should use to avoid anti-patterns in your automation tests.
How To Run Cypress Tests on LambdaTest? - Set up a LambdaTest account, and now you are all set to learn how to run Cypress tests.

Certification

You can elevate your expertise with end-to-end testing using the Cypress automation framework and stay one step ahead in your career by earning a Cypress certification. Check out our Cypress 101 Certification.