Question

Which one of the following is the description of statement coverage?

A. It is a metric, which is the percentage of test cases that have been executed
B. It is a metric, which is the percentage of statements in the source code that have been executed
C. It is a metric, which is the number of statements in the source code that have been executed by test cases that are passed
D. It is a metric, that gives a true/false confirmation if all statements are covered or not

Answer 1

Statement coverage is a software testing metric representing the percentage of executable statements in the source code that test cases have executed. It is used to ensure all written code has been tested, although 100% coverage does not guarantee absence of bugs.

Step-by-step explanation:

The correct answer to the student's question is B. Statement coverage is a metric used in software testing. Specifically, it is the percentage of executable statements in the source code that have been executed through the run of a suite of test cases. This means that if you have 100 statements in your code and you write test cases that execute 80 of those statements, your statement coverage is 80%.

Statement coverage is an important concept in software testing as it helps to ensure that all code has been tested, which can lead to the detection of errors and bugs. However, achieving 100% statement coverage does not guarantee that all possible scenarios have been tested or that your code is bug-free. It simply ensures that every line of code has been run at least once during the testing process.