What is test coverage nedir?

Test coverage is a metric used in software testing to calculate the degree to which the source code of an application is tested. It measures the amount of code that is executed or the number of requirements that have been tested by a test suite. Test coverage is essential to ensure that the quality of the software meets the expected standards, as it helps identify areas of the code that have not been tested and can pose potential risks and errors in the application.

There are different types of test coverage metrics used in software testing, including statement coverage, branch coverage, path coverage, and condition coverage. Statement coverage measures the percentage of code line executed during testing, while branch coverage measures the percentage of decision points in code that have been tested. Path coverage, on the other hand, analyzes all possible paths through the code to ensure that all have been tested, while condition coverage examines whether all possible branch outcomes have been covered.

Test coverage can be used to assess the effectiveness of a testing strategy and identify areas for further testing. It is often seen as a critical measure of the quality of the testing process and helps ensure that the software meets the expected standards and requirements. However, it is essential to note that achieving 100% test coverage does not necessarily mean that the software is free from errors, as coverage alone cannot guarantee that all scenarios have been tested.