what is boundary value analysis?

Answer Posted / prashanth

Boundary Value Analysis(BVA)is nothing but testing the Minimum and Maximum values of a text box field. Lets take an example

Let's say In Requirements document for "User Name" field it is give like this

- User name field should accept minimum 3 and Maximum 9 alphanumeric characters should accept

In Use Case document it will be written like below

User name Field:BVA
- min-1 is Invalid (2)
- min= is valid (3)
- min+1 is valid (4)
- max-1 is valid (8)
- max= is valid (9)
- max+1 is Invalid (10)

In Test Case document we write like this

Test Case_001:
Enter 2 values in User name field and click on Submit button

Expected: Error message should display "Enter Valid User Name"

Test Case_002:
Enter 3 values in User name field and click on Submit button

Expected: Should navigate to particular page

Test Case_003:
Enter 4 values in User name field and click on Submit button

Expected: Should navigate to particular page

Test Case_004:
Enter 8 values in User name field and click on Submit button

Expected: Should navigate to particular page

Test Case_005:
Enter 9 values in User name field and click on Submit button

Expected: Should navigate to particular page

Test Case_006:
Enter 10 values in User name field and click on Submit button

Expected: Error message should display "Enter Valid User Name"

The above format is only example.

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