Explain the concept of branch coverage.

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Explain the concept of branch coverage.

Branch coverage is a metric used in software testing to measure the extent to which all possible branches or decision points in a program have been executed. It aims to ensure that every possible outcome of a decision point, such as an if statement or a switch case, has been tested at least once. Branch coverage helps identify areas of code that have not been tested, allowing developers to improve the quality and reliability of their software.