January 23, 2007

Explain Boundary value testing and Equivalence testing with some examples.

Boundary value testing is a technique to find whether the application is accepting the expected range of values and rejecting the values which falls out of range.
Ex. A user ID text box has to accept alphabet characters ( a-z ) with length of 4 to 10 characters.
BVA is done like this, max value:10 pass; max-1: 9 pass;
max+1=11 fail ;min=4 pass;min+1=5 pass;min-1=3 fail;
Like wise we check the corner values and come out with a conclusion whether the application is accepting correct range of values.
Equivalence testing is normally used to check the type of the object.
Ex. A user ID text box has to accept alphabet characters ( a - z ) with length of 4 to 10 characters.
In +ve condition we have test the object by giving alphabets. i.e a-z char only, after that we need to check whether the object accepts the value, it will pass.
In -ve condition we have to test by giving other than alphabets (a-z) i.e A-Z,0-9,blank etc, it will fail.

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21 Comments:

Blogger shabeena said...

This very good article......
If u add some more details.......That will be nice

1:14 PM  
Anonymous Seema said...

To the point and breif article. Hope you would update this with more information

11:08 PM  
Anonymous Anonymous said...

It`s really interesting to reed. But all thk about other. Why so?

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Anonymous Anonymous said...

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Anonymous Anonymous said...

Beautiful post, great ))

5:35 AM  
Anonymous Anonymous said...

I've finally found a normal presentation on this issue. Thank you.

7:14 PM  
Anonymous Anonymous said...

cool buddy the best answer iam looking for.great keep up the good work..and wish me luck i have a interview in testing today at 12pm..


---mr Vikas rajput kangra

9:17 AM  
Blogger Renu Maheshwari said...

realy nice post. Thanks...:)

5:30 PM  
Anonymous Anonymous said...

Best article...I was really getting so confuesd about BVA n ECP...Thanx for posting this.

10:44 PM  
Blogger Gireesh said...

Hi , recently i attended one interview, i faced this question .. Q.actually i have a field it will allow 0 -9 numbers.Is the min-1 will come in BVA testing or not. Is the -1 will come in BVA or not. I said yes. they asked once again .

can u pls tell ur comments.

11:05 AM  
Blogger Vijayaraghavan Raghavan said...

yes the Boundary value will be coming in testing. we will be setting at the range of the input values the range of field for Email,Password.

12:42 PM  
Anonymous Leah Miller said...

cool buddy the best answer iam looking for.great keep up the good work..and wish me luck i have a interview in testing today at 12pm.. ---mr Vikas rajput kangra

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