It is best to set a minimum rate of code coverage that must be achieved before testing in production to reduce the chances of bugs being detected later in development. Code coverage ensures these standards are maintained so that only the optimal quality code is pushed to production.Ī high percentage of code coverage results in lower chances of unidentified bugs. Testing standards established at the beginning of the project must also be maintained throughout subsequent release cycles. Obviously, the test code must be changed to stay updated with these changes. Are there enough tests in the unit test suite?Īs development progresses, new features and fixes are added to the codebase.At this point, code coverage answers several questions such as:

Unit tests are created by developers, thus giving them the best vantage from which to decide what tests to include in unit testing. Why perform Code Coverage?Ĭode coverage is primarily performed at the unit testing level.

But the increase is more than justified in light of the tester’s information because of the extra code.Ĭode coverage scripts generate a report that details how much of the application code has been executed. Now, adding instrumentation code does result in increased execution time and code length. Code coverage tools use static instrumentation in which statements monitoring code execution are inserted at critical junctures in the code. What is Code Coverage?Ĭode coverage is a white-box testing technique performed to verify the extent to which the code has been executed.

This guide article explains each term’s meaning and how they serve the developers’ purpose. However, these terms are sometimes used interchangeably, which they are not. Code coverage and test coverage are key metrics in software testing strategies that measure the codebase’s effectiveness.

Visual studio code coverage example