Explain about Loop Testing methodology?

Answer Posted / ramyab.mca@gmail.com

Hai...

Loops are the basis of most algorithms implemented using
software.Loop testing is a white box testing approach that
concentrates on the validity of loop constructs.Four loops
can be defined: simple loops, concatenate loops, nested
loops, and unstructured loops.

1.Simple loops: The follow group of tests should be used on
simple loops, where n is the maximum number of allowable
passes through the loop:

• Skip the loop entirely.
• Only one pass through the loop.
• Two passes through the loop.
• M passes through the loop where m<n.
• n-1, n, n+1 passes through the loop.


2.Nested loop: For the nested loop the number of possible
tests increases as the level of nesting grows. This would
result in an impractical number of tests. An approach that
will help to limit the number of tests:

• Start at the innermost loop. Set all other loops
to minimum values.
• Conduct simple loop tests for the innermost loop
while holding the outer loop at their minimum iteration
parameter value.
• Work outward, performing tests for the next loop,
but keeping all other outer loops at minimum values and
other nested loops to “typical” values.
• Continue until all loops have been tested.


3.Concatenated loops: Concatenated loops can be tested
using the techniques outlined for simple loops, if each of
the loops is independent of the other. When the loops are
not independent the approach applied to nested loops is
recommended.

4.Unstructured loops: This class of loop should be
redesigned to reflect the use of the structured programming
constructs.

K,Byeeee...
Thanks & Regards
B.Ramyasri

Is This Answer Correct ?    13 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Can you explain function points?

687


What are the differences between web applications and client and server applications?

684


why use caffine for HPLC calibration ?

1660


How will u decide test data to see that evey feature is thoroughly tested

1584


Write the function test case to add a customer to database.

1711






What is showstopper defect?

676


What exactly is quality control?

730


How do you go about testing a project?

1535


What’s the difference between a bug and a defect?

673


do we require any scripting languae to write test cases in test director? what for it is used?it is like back end?only database we can there?

1653


What r all the security problems u r facing & the measures taken to solve.

1836


how to generate id in testdirector? a) Td id 1 b) td id 2 c) td id 3 d) td id 4 which is correct answer please any one of the tell me and mail me

1798


Should testing be done only after the build and execution phases are complete?

1085


What are the RBI rules has to follow by a bank for online precesseing. ?

1723


Difference between smoke and sanity testing

1301