Payroll Testing

[whizyrel]

Functional Paradigmn

General Util

Using the bottom-up approach:

Implement with tests

• a function to detect if parameter passed is not of type number
• a function to convert argument to type number

Calculator Util

Implement with tests

• a function to add arguments and return sum.
• a function to subtract arguments and return difference.

Payroll Util

Implement with tests

• Calculate total earnings
• Calculate deductions

OOP Paradigmn

Refactor implementations from above into OOP paradigmn