Boundary Value Analysis.
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Printed Date: 24Jan2025 at 3:49am
Topic: Boundary Value Analysis.
Posted By: tanushree
Subject: Boundary Value Analysis.
Date Posted: 18Oct2007 at 1:10am
Boundary Value Analysis.
It
is observed that boundary points for any inputs are not tested
properly. This leads to many errors. Large number of errors tend to
occur at boundaries of the input domain.
Boundary Value Analysis(BVA) leads to selection of test cases that exercise boundary values.
BVA
complements equivalence partitioning i.e. select any element in an
equivalence class, select those at the ''edge' of the class.
Examples:
1. For a range of values bounded by a and b, test (a-1), a, (a+1), (b-1), b, (b+1).
2. If input conditions specify a number of values n, test with (n-1), n and (n+1) input values.
3. Apply 1 and 2 to output conditions (e.g., generate table of minimum and maximum size).
4. If
internal program data structures have boundaries (e.g., buffer size,
table limits), use input data to exercise structures on boundaries.
BVA
and Equivalence partitioning both helps in testing the programs and
covers most of the conditions. This method does not test the
combinations of input conditions
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