How do you test code that uses MessageDigest?

To test code that uses the MessageDigest class in Java, you can write unit tests to verify that the output matches the expected hash values for given input strings. In this example, we will create a simple method to generate a hash using SHA-256 and a corresponding test case to validate its behavior.


    assertEquals($expectedHash, HashUtil::generateHash($input));
        }
    }
    ?>

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