


For example, a user might enter the password in the wrong format, and a user might not receive an error message on entering an incorrect password. When do we do black box testing, its types?īlack box testing checks scenarios where the system can break. Black box theories are things defined only in terms of their function. The observed hydrograph is a graphic of the response of a watershed (a blackbox) with its runoff (red) to an input of rainfall (blue).

What do you need to know about black box theory?ĭata has to be written down before it is pulled for black box inputs.
