Statement Testing and Coverage are related concepts in software testing that are used to measure the thoroughness of testing at the code level. As a test engineer, here's what you need to know about Statement Testing and Coverage:
Definition: Statement Testing is a white-box test technique that focuses on testing individual statements in the source code of a program. Statement Coverage is a measure of the percentage of statements in the source code executed during testing.
Objective: The main objective of Statement Testing and Coverage is to ensure that all statements in the source code of a program are executed at least once during testing to identify errors or defects that occur due to incorrect or incomplete implementation of the program.
Process: Statement Testing and Coverage involves creating test cases to execute each statement in the source code of a program at least once and then measuring the percentage of statements executed during testing. This can be done manually or using automated testing tools.
Advantages: Statement Testing and Coverage can help identify errors and defects that occur due to incorrect or incomplete implementation of individual statements in the source code of a program. It can also help ensure the program behaves correctly and consistently for all possible input values.
Limitations: Statement Testing and Coverage may not be effective for programs that have complex control structures or logic that cannot be easily represented as individual statements. It may also not be effective if the program has redundant or unreachable code that does not contribute to the program's functionality.
Examples of Statement Testing and Coverage include:
- Testing a program that calculates the sum of two numbers.
- Testing a program that sorts an array of integers.
- Testing a program that searches for a specific string in a text file.
In conclusion, Statement Testing and Coverage are useful to test techniques that can help test engineers ensure that all statements in the source code of a program are executed at least once during testing to identify errors or defects that occur due to incorrect or incomplete implementation of the program. It is important to understand their advantages and limitations and to use them appropriately depending on the specific requirements and context of the testing project.