SOFTWARE TESTING

PRESENTED BY

KEDAR R. HIRE097030

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GUIDED BY

Prof.O.R.Varma

CONTENTS1. What is Testing?

2. Why Software Testing?

3. Verification & Validation

4. Types of Testing

5. Techniques of Testing

6. Conclusion

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WHAT IS TESTING? Executing software in a real environment, using

selected inputs

Software testing is an investigation conducted to provide stakeholders with information about the quality of the product

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WHY SOFTWARE TESTING?

To produce quality of product To reduce the failure cost and maintenance cost To correct the defects To ensure that product work as user expected it to

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VERIFICATION & VALIDATION Verification - means ensuring that the software

has been built correctly

Validation - means ensuring that the software meets the requirements

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TYPES OF TESTING

A. Manual Testing

B. Automated Testing

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STAGES OF MANUAL TESTING

Unit Testing Integration Testing System Testing

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UNIT TESTING Requires knowledge of the internal program

design and code

Done by Programmers

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INTEGRATION TESTING Most of the time black box testing technique is

used. However, sometimes a combination of Black and White box testing is also used in this stage

Done by programmers or testers

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SYSTEM TESTING In this stage the software is tested from all possible

dimensions for all intended purposes and platforms. In this stage Black box testing technique is normally used

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AUTOMATED TESTING Test automation is the use of software to control

the execution of tests, the comparison of actual outcomes to predicted outcomes, the setting up of test preconditions, and other test control and test reporting functions

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AUTOMATED TESTING TOOLS 1. Winrunner

2. HP QuickTest Professional

3. IBM Rational Functional Tester

4. Visual Studio Test Professional

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TECHNIQUES OF TESTING White Box Testing Black Box Testing Alpha Testing Beta Testing

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WHITE BOX TESTING White-box testing is a method of testing software

that tests internal structures or workings of an application, as opposed to its functionality

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WHITE BOX TESTING

Componentcode

Testoutputs

Test data

DerivesTests

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BLACK BOX TESTING

Black-box testing is a method of software testing that tests the functionality of an application as opposed to its internal structures or workings

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BLACK-BOX TESTING

Ie

Input test data

OeOutput test results

System

Inputs causinganomalousbehaviour

Outputs which revealthe presence ofdefects

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ALPHA TESTINGTesting done when development is nearing

minor design changes may still be made as a result of such testing

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BETA TESTING Testing when development and testing are

essentially completed and final bugs and problems need to be found before release

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CONCLUSION Testing is more than just debugging Testing is not only used to locate defects and

correct them. It is also used in validation, verification process, and reliability measurement

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Software Testing 228/17/2011