If certain time inputs were provided, what level of decision coverage would be achieved?

If certain time inputs were provided, what level of decision coverage would be achieved?

• A. 100% or 6/6.
• B. 50% or 3/6.
• C. 67% or 4/6.
• D. 83% or 5/6.

Answer: (D)

To determine the level of decision coverage achieved, it's essential to understand what decision coverage represents in software testing. Decision coverage measures whether each decision point has been evaluated to both true and false outcomes at least once during testing. In this scenario, if the input times result in 5 out of 6 possible decision outcomes being covered, this indicates a high level of testing coverage. Achieving 5 decision points covered implies that most branches of the decision logic have been tested. Thus, if out of a total of 6 potential decision branches, 5 were covered, this leads to a calculation of decision coverage as follows: 5 covered decisions divided by the total of 6 decisions equals approximately 83% coverage. This means that the tests conducted were effective in checking most of the decision points that could affect the program's flow, which is significant for ensuring that all paths are adequately validated except for one. This level of decision coverage suggests thorough testing has taken place, but also highlights that there's still one decision point that has not been evaluated, leaving room for potential undiscovered issues. Hence, achieving 83% coverage is a favorable condition as it reflects a relatively strong level of testing effectiveness.

To determine the level of decision coverage achieved, it's essential to understand what decision coverage represents in software testing. Decision coverage measures whether each decision point has been evaluated to both true and false outcomes at least once during testing.

In this scenario, if the input times result in 5 out of 6 possible decision outcomes being covered, this indicates a high level of testing coverage. Achieving 5 decision points covered implies that most branches of the decision logic have been tested. Thus, if out of a total of 6 potential decision branches, 5 were covered, this leads to a calculation of decision coverage as follows:

5 covered decisions divided by the total of 6 decisions equals approximately 83% coverage. This means that the tests conducted were effective in checking most of the decision points that could affect the program's flow, which is significant for ensuring that all paths are adequately validated except for one.

This level of decision coverage suggests thorough testing has taken place, but also highlights that there's still one decision point that has not been evaluated, leaving room for potential undiscovered issues. Hence, achieving 83% coverage is a favorable condition as it reflects a relatively strong level of testing effectiveness.