1. Types and Techniques of Software Testing
Presented By :
Madeeha Khalid
590-FBAS/BSSE/s08

2. Table of Contents Software Testing Why Software Testing
Testing Principles
History of Testing
Types of Software Testing
Available Tools And Techniques

3. Software Testing
Software Testing is a process of evaluating a system by manual or automatic means and verify that it satisfies specified requirements or identify differences between expected and actual results.

4. The general aim of testing is to affirm the quality of software systems by systematically exercising the software in carefully controlled circumstances.
------Miller

5. Why Software Testing ???? Error Free Efficient Secured Flexible
Software Testing is important as it may cause mission failure, impact on operational performance and reliability, if not done properly !

6. Testing Principles All tests should be :
Made according to customer requirements
Planned long before Testing begins
Begin in-the-small and progress towards in-the-large
Exhaustive Testing is not Possible

7. History of Testing Phase I. Before 1956: The Debugging-Oriented Period
– Testing was not separated from debugging
Phase II. 1957~78: The Demonstration-Oriented Period
– Testing to make sure that the software satisfies its specification
Phase III. 1979~82: The Destruction-Oriented Period
– Testing to detect implementation faults
Phase IV. 1983~87: The Evaluation-Oriented Period
– Testing to detect faults in requirements and design as well as in implementation
Phase V. Since 1988: The Prevention-Oriented Period
– Testing to prevent faults in requirements, design, and implementation

8. Types of Software Testing
About 50 types of Testing available !

9. Testing Classification
Classification by Purpose
Correctness Testing
Performance Testing
Reliability Testing
Security Testing
By Life-Cycle Phase
Requirements Phase Testing
Design Phase Testing
Program Phase Testing
Evaluating Test Results
Installation Phase Testing
Acceptance Testing
By Scope
Unit Testing
Component Testing
Integration Testing
System Testing

10. Black Box Testing Correctness Testing
Only inputs and output functionality visible
Inputs are given and outputs are compared against specification
No implementation Details of the code are considered
Data driven Testing
TARGET :To find Incorrect or missing functions , interface errors and
performance errors

11. White Box Testing Correctness Testing Contrary to Black-box testing
Structure and code visible
Implementation is given more importance
Programming language , logic, styles are considered
TARGET: To check control-flow , looping ,Data-flow.
All nodes are traversed at least once

12. Unit Testing Tests the smallest individually executable code units.
Usually done by programmers.
Test cases might be selected based on code, specification, intuition, etc.
Tools:
Test driver/harness
Code coverage analyzer
Automatic test case generator

13. Integration Testing
Tests interactions between two or more units or components.
Usually done by programmers.
Emphasizes interfaces.
Types :
Regression Testing
Incremental Integration Testing
Smoke Testing

14. Stages of Testing Testing in the Large System Testing
End-to-End Testing
Operations Readiness Testing
Beta Testing
Load Testing
Stress Testing
Performance Testing
Reliability Testing
Regression Testing

15. System Testing Test the functionality of the entire system.
Usually done by professional testers.
Types:
Recovery Testing
Security Testing
Load and Stress Testing
Performance Testing
Installation Testing

16. Acceptance Testing Alpha Testing Beta Testing Long Term Testing
Insures that the project satisfies the customer Requirements
Usually done by both Testers and Users
Types:
Alpha Testing
Beta Testing
Long Term Testing
Compatibility Testing

17. Automated Testing Software Testing Costly!
Automation Way To Cut Down Cost!
Still significant Amount of human intervention needed
Degree of Automation remains mainly at the automated script level.

18. And Many Other types of….

19. Available Tools And Techniques

20. Available Tools And Techniques
A lot of Testing Tools available. Some Are :
Mathora
NuMega’s Boundschecker,National’s Purify
Ballista COTS Software Robustness Testing Harness

21. Mathora Mutation Testing tool developed at Purdue University
Can Create and Execute Test cases
measures adequacy
Determine Input-Output Correctness
Remove Bugs

22. NuMega’s Boundchecker, National’s Purify
Runtime Checking and Debugging Aids
Check and protect against Memory Leaks and Pointer problems

23. Ballista COTS Software Robustness Testing Harness
Full Scale Automated robustness Testing Tool

24. Thanks for Listening…