What is the purpose of test coverage in software testing?

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What is the purpose of test coverage in software testing?

The purpose of test coverage in software testing is to measure the extent to which the source code of a program has been tested. It helps in identifying areas of the code that have not been exercised by the tests, ensuring that all parts of the code are tested and reducing the risk of undetected bugs or errors. Test coverage also helps in assessing the quality and effectiveness of the testing process by providing metrics on the percentage of code covered by tests.