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

*Content given in the lab2_mocha_test zip file was a file called calculator.js which consist the following:

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;

};