1. Personal Profile
Experience: 7+ Years in IT industry.
Education: MBA (Marketing) 2009 - 2011,
BSCS (Hons) 2000 - 2005
Skills Areas: PHP Frameworks, CMS &
Front-End Technologies
Cell #: 923009888545
Email: khurrammhd@gmail.com
Skype: Khurram645
Khurram Mahmood Bhatti
Software Lead at DatumSquare IT Services

2. Unit Testing
INTRODUCTION TO AUTOMATED TESTING AND UNIT TESTING

3. Agenda
 Types of Testing
 Unit Testing - What, Why & Who?
 Code Coverage
 Guideline for Unit Testing
 Demo by using PHP-Unit.
 Questions & Answers

4. Types of Testing
 White Box (or glass box) Testing
• Unit Testing
• Integration Testing
 Black Box Testing (Behavioral Testing)
• Incorrect or missing functions
• Interface, Initialization and termination errors
• Errors in data structures or external database access
• Behavior or performance errors
 Gray Box Testing ( Code + Behavior)

5. Unit Testing – What, Why & Who?
 What is Unit Testing?
• Test individual units/components of a software/system
• Validate each unit of the software performs as designed
• Source code is meeting requirement at its best.
 Why do we use it?
• Functional correctness and completeness
• Error handling
• Check input parameters (Input values)
• Correctness of return values (output data)
• Optimizing performance and algorithm
 Who does it?
• Typically written and run by software developers.

6. Coverage
 Statement Coverage (line of code)
 Branch Coverage (IF statements)
 Path Coverage (paths of program)

7. Path Coverage

8. Guidelines
 Unit tests must be small and fast
 Fully automated
 Simple to run
 Measure the tests
 Fix failing tests immediately
 Keep tests independent
 Name tests properly ( e.g testSaveData(),
testUpdateData() )

9. Unit Testing - Frameworks
 Examples:
 JUnit (Java)
 http://junit.org/junit4/
 NUnit (.NET)
 http://www.nunit.org/
 Doctest (Python)
 https://docs.python.org
 PHPUnit (PHP frameworks, e.g. - Codeigniter)
 https://phpunit.de/
 QUnit (JavaScript)
 https://qunitjs.com/

10. Demo
Calculator CalculatorTest

11. Questions & Answers