Step 1 : Install node package manager

Step 2 : Create your project folder Example : f:\mocha_Chai

Step 3: Open command prompt

Step 4: Go to your project root directory

Step 5: Install package.json file. For installing package.json write command as below :- npm init Press enter at the end of all field. Note : Enter information like package.json contains.

Step 6: Install mocha in your project, go to your project root directory and wirte command npm install mocha

    Note:  To install mocha globally write command
    npm install -g mocha
    This is not depend upon project root directory.You can install anywhere,it will work global for your system.
    
    To check mocha globally install, write command
    mocha -V

Step 7: Install Chai in your project, go to your project root directory and wirte command npm install chai

Step 8: Create one test folder in your project Example : f:\mocha_Chai\test

Step 9: Create one test.js file in test folder.it will contain test cases. Example : f:\mocha_Chai\test\test.js code in test.js file

    var expect = require('chai').expect; //add chai
    describe('A basic test',function(){
       it('Should pass when every thing is ok',function(){
	    expect(true).to.be.true;
       });
       });

Step 10: To run test cases, go to your project root directory and write command npm test