Cypress vs Jasmine vs Jest: What are the differences?

Introduction:
Key differences between Cypress, Jasmine, and Jest are outlined below.

1. **Testing Framework Integration**: Cypress is a comprehensive end-to-end testing framework, while Jasmine and Jest are primarily unit testing frameworks.
2. **Syntax**: Cypress uses a custom syntax that is more minimalistic and easy to read, whereas Jasmine and Jest use more traditional JavaScript testing syntax.
3. **Built-in Spies/Stubs/Mocks**: Jest comes with built-in support for spies, stubs, and mocks, making it easier to mock dependencies compared to Cypress and Jasmine.
4. **Browser Support**: Cypress runs tests directly in the browser, providing real-time feedback, while Jasmine and Jest run tests in Node.js environment, making browser-specific testing more challenging.
5. **Performance**: Cypress executes tests in a real browser, resulting in slower test runs, while Jasmine and Jest run tests in a simulated environment, leading to faster performance.
6. **Community Support**: Jest has a larger community and ecosystem due to being maintained by Facebook, providing more resources and support compared to Cypress and Jasmine.

In Summary, the key differences between Cypress, Jasmine, and Jest lie in their testing framework integration, syntax, support for mocks, browser environment, performance, and community support.