Boundary
Value Analysis is a software testing technique which is used to create the test
cases for required input field or we can say that BVA used for test cases
design(between the valid boundary partition and invalid partition). BVA is also
a part of stress and negative testing. Boundary value include the border value
means minimum and maximum value for example an address text box which takes 500
character but if create the test cases for each character then it’s very
difficult to design so here we will use the BVA technique means take the
boundary values. Another example for this technique at office a very important tool
which is used for take valid user name and password field in which minimum 8
characters and maximum 12 characters so here we can partition valid range will be 8-12 and invalid range
7-13.Most important thing it is used for
Black box testing. Many application errors create at
the boundaries. ‘Boundary value analysis’ testing technique is
used to found errors at boundaries rather than finding those occur in middle of
input given. Where a boundary value has taken the invalid partition the test
case is designed to assure the software component hold the value in a managed
manner. Boundary value analysis is also used for the testing cycle and is also
similarly applicable for all testing phases. We cannot test all the possible input domain values,
because if we try to complete all, then number of test cases becomes large. In
this method, input data is partition into different part; each part gives the
input range from the equivalence. Then select one input from each partition. So
this technique is used to reduce large number of test cases to a minimum
number, while assuring that the selected test cases are effective test cases
which would be the whole scenarios.
Benefits of Boundary Value:
1. It reduces the number of
test cases for a tester.
2. It is used for black box
testing.
4. It is give the technique
in which input domain divided into different class and select each class for
testing so we can say that we can easily find the bugs.
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