Cypress Interview Questions

• Support only JavaScript
• Complex
• No MultiTab Support
• No Multiple Browser
• Difficult to communicate with backend
• Mouse Hover Issues
• No Tab Key Support
• No Direct XPath support
• No Mobile Support
• File Upload using Plugin
• Drag and Drop typical to implement without plugin
• No Iframe Support
• Less no. of browser support
• Only Mocha JS Testing Framework supported
• Typical Parallel Testing
• No Page Object Model
• Not for indexing web
• Not for performance testing

By default Cypress includes the index.js and commands.js in the Support folder.Index.js run before every test file. We can put reusable behavior such as custom commands and global override in this folder.

To execute Cypress tests in order put all the file names in the desired order in the Cypress.JSON file under the testFiles property section.

We can use request command to make an HTTP request and pass in multiple attributes to it. For Example:

cy.request({
  method: 'POST', 
  url: '/api/boards', 
  body: {
    name: 'space travel plan'
  }
})

Cypress use following assertions:

1. Chai BDD Assertions: not, include, equal etc.
2. Chai TDD Assertions: .isOK(), .isTrue() etc
3. Chai JQuery Assertions: visible, hidden, selected etc.
4. Sinon-Chai Assertions: called, callCount etc.

Also we can write our own assertions using chai assertions. 

You can check for visibility using should command and be.visible property.

cy.get('button.submit').should('be.visible')

we can use Cypress Fixture command to Load a fixed set of data located in a file. Cypress provides a directory named as fixtures, which stores various "JSON" files, and these JSON files can store the test data which can be read by multiple tests. We store test data in the form of key-values, which we can access in the test scripts.

Cypress Hooks which help in performing a particular set of actions just before/after each test case or before/after all the test cases in the test suite. 

• Before() Hook
• After() Hook
• BeforeEach() Hook
• AfterEach() Hook

Cypress has adopted Mocha's bdd syntax, which fits perfectly with both integration and unit testing.  Also, you can integrate Cypress with Cucumber using Plugin.

To interact with DOM elements you can use CSS selector. For XPath you need to use external plugins. Also, you can use many build in commands to interact with elements.