Certified Associate in Software Testing (CAST) Practice Test

What aspect does statement coverage focus on in testing?

1. The execution of all branches in code

2. The execution of all statements in code

3. The robustness of the system

4. The validation of system outputs

The correct answer is: The execution of all statements in code

Statement coverage is a testing metric that ensures every individual statement in the source code has been executed at least once during testing. This approach is fundamental in verifying that the control flow of the program has been thoroughly tested, which can help identify sections of code that may not be functioning as intended due to lack of sufficient test cases. By focusing on the execution of all statements, statement coverage provides a way to measure the completeness of testing efforts and can highlight areas of the code that require further testing. While execution of all branches, robustness, and validation of system outputs are also important aspects of software testing, they are not the primary focus of statement coverage. Branch coverage, for instance, deals specifically with ensuring that all possible branches in the code are executed, which is distinct from merely executing all individual statements.