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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19 Comments:

Blogger shabeena said...

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

1:14 PM  
Anonymous Anonymous 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?

4:02 AM  
Anonymous Anonymous said...

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6:13 PM  
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 Unknown 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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