1) Download given node project name lab2_mocha_test ZIP file

2) Add package.json file to the project

Change directory to lab2_mocha_test

npm init -y

3) Setup project to working with mocha

Install mocha module

npm install --save mocha chai

4) Write test cases to perform calculator test

- Create test/calculator.js file to write all your test cases

-Write one success and one fail test of add, sub, div and mul for calculator.js

Sample Test cases

add(5, 2) expected result 7 PASS

add(5,2) expected result 8 FAIL

sub(5, 2) expected result 3 PASS

sub(5,2) expected result 5 FAIL

mul(5, 2) expected result 10 PASS

mul(5,2) expected result 12 FAIL

div(10, 2) expected result 5 PASS

div(10,2) expected result 2 FAIL

5) Display your choice pass/fail messages for each test

includes file called calculator.js with code below:

exports.add = function(i, j) {

return i + j;

};

exports.mul = function(i, j) {

return i * j;

};

exports.div = function(i, j) {

return i / j;

};

exports.sub = function(i, j) {

return i - j;

};