validateOperations

Validates the core Keychain operations: write, read, and delete.

This function performs a series of tests to ensure that the Keychain's fundamental operations are functioning correctly. It does this by:

indicating that the Keychain operations are not working as expected.

true if all Keychain operations are successful; otherwise, an exception is thrown.

If any of the Keychain operations fail, an exception is thrown with a descriptive error message.