4.2.2 Boundary Value Analysis

Question 1

Boundary Value Analysis (BVA) is a test technique based on exercising the “ “ of e…

BVA can only be used for o…

Answer 1

boundaries
equivalence partitions.

ordered partitions.

Question 2

The minimum and maximum values of a partition are it’s b…

In the case of BVA, if two elements belong to the same partition, all “ “ between them must also belong to that “ “.

Answer 2

boundary values.

elements
partition

Question 3

BVA focuses on the boundary values of the partitions because developers are more likely to make “ “ with these b…

Answer 3

errors
boundary values.

Question 4

Typical defects found by BVA are located where implemented boundaries are “ “ to positions a… their intended “ “ or are o…

Answer 4

misplaced
above or below
positions
omitted altogether.

Question 5

In 2-value BVA, for each boundary value there are two coverage items:
- this b…
- it’s c… belonging to the a…

Answer 5

• boundary value
• closest neighbor
  adjacent partition

Question 6

To achieve 100% coverage with 2-value BVA, test cases must exercise a… (all identified b… ).

Coverage is the n… , divided by total number of i… , and expressed as a “ “.

Answer 6

all coverage items
boundary values

number of boundary values exercised
identified boundary values
percentage.

Question 7

In 3-value BVA, for each boundary value there are three coverage items:
- this b…
- both it’s “ “

So, some coverage items may not be b…

Answer 7

• boundary value
• neighbors

boundary values.

Question 8

To achieve 100% coverage with 3-value BVA, test cases must exercise a… (identified b… and their “ “).

Coverage is number of b… and their n…, divided by the total number of i… and their “ “ , and expressed as a “ “.

Answer 8

all coverage items
boundary values
neighbors

boundary values
neighbors exercised
identified boundary values
neighbors
percentage.

Question 9

3-value BVA is more rigorous than 2-value BVA as it may detect defects o…

Answer 9

overlooked by 2-value BVA.