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Saturday, 20 July 2013

WHAT IS BLACKBOX TESTING


WHAT-IS-BLACK-BOX-TESTING

BLACKBOX TESTING:-  Blackbox test design treats the system as blackbox. It include specification testing, functional testing, input/output driven testing.

WHAT-IS-BLACK-BOX-TESTING

Blackbox testing attempts to uncover following:
1.)                Incorrect functions
2.)                data structure errors
3.)                missing functions
blackbox testing uses following techniques:-
I.)                 Equivalence class partitioning
II.)              boundary value analysis, And  Comparison testing.
EQUIVALENCE CLASS PARTITIONING:- THIS METHOD DIVIDES THE INPUT OF PROGRAMS INTO CLASSES OF DATA. An equivalence class represent a set of valid and invalid input values.
BOUNDARY VALUE ANALYSIS:- It is the complementary to EQUIVALENCE partitioning.
Boundary value analysis also encourage best case designers.
A successful test case is one that detects undetected faults. In order to maximize the chances of finding a new fault, a new technique is applied boundary value analysis.
CAUSE EFFECT GRAPHS:- Cause effect graphs connects the input classes to output classes yid ding a direct graph. Cause effect graphing is a test case design approach that offer a depiction of logical condition.
COMPARISON TESTING:- Comparison testing is not full prof. If the specification applied to all version is incorrect all version cause errors.
ADVANTAGE OF BBT:-
1.)                The tester does not need knowledge of any specific programming language.
2.)                 The test is done from the point of view of user not the designer.
3.)                The test is unbiased, because the designer and tester are independent of each other.
DISADVANTAGES OF BBT (BLACKBOX TESTING):-
1.)                The test can be redundant.

2.)                The test cases are difficult to design
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ABOUT THE AUTHOR

Founder & Author:I ABHISHEK BHATI student of COMPUTER SCIENCE by education a Blogger by profession and compueters and electronics is my passion BHATI TRICKS is not start of blogging ABHISHEK BHATI launched his frist Marketing Site in 2013.
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