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PRESENTED BY:- Varsha Thakur Jaydev Rawat Sanat Soni Pawan Kurmi SUPERVISIOR Mr. G. K. SINGH PGT

Software testing

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PRESENTED BY:-

•Varsha Thakur

•Jaydev Rawat

•Sanat Soni

•Pawan Kurmi

SUPERVISIORMr. G. K. SINGH PGT

Dr. H. s. Gour Central utd. Sagour 2

Testing is a process of identifying defects

Develop test cases and test data

A test case is a formal description of

A starting state

One or more events to which the software must

respond

The expected response or ending state

Test data is a set of starting states and events

used to test a module, group of modules, or

entire system

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Programmers Unit testing

Testing buddies can test other programmer’s code

Users Usability and acceptance testing

Volunteers are frequently used to test beta versions

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Component testing Testing of individual program components

Usually the responsibility of the component developer (except sometimes for critical systems)

Tests are derived from the developer’s experience

Integration testing Testing of groups of components integrated to

create a system or sub-system

The responsibility of an independent testing team

Tests are based on a system specification

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Componenttesting

Integrationtesting

Software developer Independent testing team

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Unit Testing

Integration Testing

Usability Testing

Customer Acceptance Testing

Regression testing

Smoke Testing

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The process of testing individual

methods, classes, or components before they

are integrated with other software

Two methods for isolated testing of units

Driver

Simulates the behavior of a method that sends a

message to the method being tested

Stub

Simulates the behavior of a method that has not yet

been written

8Dr. H. s. Gour Central utd. Sagour

Evaluates the behavior of a group of methods

or classes

Identifies interface compatibility, unexpected

parameter values or state interaction, and run-

time exceptions

System test

Integration test of the behavior of an entire

system or independent subsystem

Build and smoke test

System test performed daily or several times a

week

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Determines whether a method, class, subsystem, or system meets user requirements

Performance test Determines whether a system or subsystem can

meet time-based performance criteria Response time specifies the desired or maximum

allowable time limit for software responses to queries and updates

Throughput specifies the desired or minimum number of queries and transactions that must be processed per minute or hour

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Determines whether the system fulfills user

requirements

Involves the end users

Acceptance testing is a very formal activity

in most development projects

11Dr. H. s. Gour Central utd. Sagour

• Identifies new faults that may have been

introduced as current one are being

corrected

• Verifies a new version or release still

performs the same functions in the same

manner as an older version or release

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Taken from the world of hardware Power is applied and a technician checks for sparks, smoke, or

other dramatic signs of fundamental failure

Designed as a pacing mechanism for time-critical projects Allows the software team to assess its project on a frequent

basis

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• Function testing: does the integrated

system perform as promised by the

requirements specification?

• Performance testing: are the non-functional

requirements met?

• Acceptance testing: is the system what the

customer expects?

• Installation testing: does the system run at

the customer site(s)?

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. Compares the system’s actual performance

with its requirements

• Develops test cases based on the

requirements document

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• Stress tests

• Volume tests

• Configuration tests

• Compatibility tests

• Regression tests

• Security tests

• Timing tests

• Environmental tests

• Quality tests

• Recovery tests

• Maintenance tests

• Documentation tests

• Human factors (usability)

tests

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. Enable the customers and users to determine

if the built system meets their needs and

expectations

• Written, conducted and evaluated by the

customers

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• Before the testing

– Configure the system

– Attach proper number and kind of devices

– Establish communication with other system

• The testing

– Regression tests: to verify that the system has

been installed properly and works

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After system testing is complete, the

customer might perform a "customer

acceptance test" before signing off on the

product

The customer acceptance test is a suite of

tests that will be run by the customer (or

someone they hire) to ensure that the

product meets requirements

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Code

Design

Requirements

System Engineering

Unit Testing

Integration Testing

Validation Testing

System Testing

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There is no definitive answer to this question

Every time a user executes the software, the program is

being tested

Sadly, testing usually stops when a project is running out of

time, money, or both

One approach is to divide the test results into various

severity levels

Then consider testing to be complete when certain levels of

errors no longer occur or have been repaired or eliminated

22Dr. H. s. Gour Central utd. Sagour

Google

Software Engineering- Roger S. Pressman

Software Engineering by Pankaj Jalote

Software Engineering- K. K. Agarwal

Bollinger, T. and C. McGowen, “A Critical

Look at Software Capability Eval-

Gilb, T., “What Is Level Six?” IEEE Software,

January 1996, pp. 97–98, 103.

Pressman, R.S., and S.R. Herron, Software

Shock, Dorset House, 1991.

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Thank

You

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