How to install Cypress?

 

Installation of Cypress:-

 1) Install Node.js

2) Install Cypress

npm install

Create a New Folder  directory & open it in CMD 

Now,Install Cypress via npm:

cd /your/project/path

npm install cypress --save-dev

This will install Cypress locally as a dev dependency for your project.

Make sure that you have already run npm init or have a node_modules folder or package.json file in the root of your project to ensure cypress is installed in the correct directory.

Notice that the Cypress npm package is a wrapper around the Cypress binary. The version of the npm package determines the version of the binary downloaded.
As of version 3.0, the binary is downloaded to a global cache directory to be used across projects.

Best Practice

The recommended approach is to install Cypress with npm because :

• Cypress is versioned like any other dependency.
• It simplifies running Cypress in Continuous Integration.

 yarn add

Installing Cypress via yarn:

cd /your/project/path

yarn add cypress --dev

 Direct download

If you’re not using Node or npm in your project or you want to try Cypress out quickly, you can always download Cypress directly from our CDN.

Recording runs to the Dashboard is not possible from the direct download. This download is only intended as a quick way to try out Cypress. To record tests to the Dashboard, you’ll need to install Cypress as an npm dependency.

The direct download will always grab the latest available version. Your platform will be detected automatically.

Then you can manually unzip and double click. Cypress will run without needing to install any dependencies.

 Continuous integration

Please read our Continuous Integration docs for help installing Cypress in CI. When running in linux you’ll need to install some system dependencies or you can use our Docker images which have everything you need prebuilt.

Opening Cypress

If you used npm to install, Cypress has now been installed to your ./node_modules directory, with its binary executable accessible from ./node_modules/.bin.

Now you can open Cypress from your project root one of the following ways:

The long way with the full path

./node_modules/.bin/cypress open

Or with the shortcut using npm bin

$(npm bin)/cypress open

Or by using npx

note: npx is included with npm > v5.2 or can be installed separately.

npx cypress open

Or by using yarn

yarn run cypress open

After a moment, the Cypress Test Runner will launch.

Switching browsers

The Cypress Test Runner attempts to find all compatible browsers on the user’s machine. The drop down to select a different browser is in the top right corner of the Test Runner.

Read Launching Browsers for more information on how Cypress controls a real browser during end-to-end tests.

Cross Browser Support

Cypress currently supports Firefox and Chrome-family browsers (including Edge and Electron). To run tests optimally across these browsers in CI, check out the strategies demonstrated in the cross browser Testing guide.

Adding npm scripts

While there’s nothing wrong with writing out the full path to the Cypress executable each time, it’s much easier and clearer to add Cypress commands to the scripts field in your package.json file.

{
  "scripts": {
    "test": "cypress open"
  }
}

Now you can invoke the command from your project root like so:

npm run test

…and Cypress will open right up for you.