Test Case Design Techniques like BVA, Equalance
partitioning, Error guessing?

Answer Posted / mercy

Boundary Value Analysis(BVA): The concept behind this is to
partition program domain in a meaningful way to generate
data sets that span the partition are determined. This
creates test cases around the boundaries of the valid data.
The values that can be passed are exact boundary values, +/-
lowest boundary value and +/- highest boundary value

Consider a text box which can take a maximum of 255
characters. Then the domain that can be considered is from
1 to 255. The values that can be passed into the text box
for testing would be 1, 255, 0,2,254 and 256.

Equalence Partitioning: This is to partition set of all
possible inputs into classes that receive equivalent
treatment.

If consider the same example, the equivalence classes would
be:

Class1: Values from 1 to 255, 1 and 255 inclusive
Class2: Values less than 1
Class3: Values more than 255

Error Guessing: This technique is used to find defects
using the experience of the tester. Consider the above
example, the textox is intended for characters only. The
tester can easily give numbers or any special characters
for that text box and see whether the application is
throwing an exception or not.

Is This Answer Correct ?    8 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Architectural structure of the insurance project?

860


Are there more defects in the design phase or in the coding phase?

1023


KINDLY FORWARD ME THE INTERVIEW QUESTIONS & ANSWERS FROM REAL TIME POINT OF VIEW FOR 1.5 YEARS EXPERIENCED CANDIDATE. MY EMAIL ID IS sky_bird433@yahoo.com

2405


Explain compatibility testing with an example.

746


what are the risk factors in the project? what is the base for testplan and entry criteria ,exit criteria for test plan?

2037






Can any body tell me in real time how cookies testing is done. And please tell me the steps.And for cookies testing test cases is needed.

1717


tell me 5 new requirements in ur project? plz urgent

2042


How do you get programmers to build testability support into their code?

2326


I have cleared written test and one Technical round in one company? now i have to face an Client Round through telephony? Any body have faced client round, how will it be , wil they ask technical or is it only formality round? im nervous, plz let me know wat all they may ask? i have this round on monday?

2548


can anyone tell me few critical bugs in ecommerce project.

5683


in the account there is 10,000 rupees and i entered 20000, in this case how will you test the application

1341


List out test deliverables?

777


what risks do u faced u r projest how do you solve

1714


How should validation activities be handled?

773


Why do you need to parameterize fields in your virtual user script?

1754