Happy path

Common card · No. 453707

In the context of software or information modeling, a happy path (sometimes called happy flow) is a default scenario featuring no exceptional or error conditions. For example, the happy path for a function validating credit card numbers would be where none of the validation rules raise an error, thus letting execution continue successfully to the end, generating a positive response. Process steps for a happy path are also used in the context of a use case. In contrast to the happy path, process steps for alternate flow and exception flow may also be documented. Happy path test is a well-defined test case using known input, which executes without exception and produces an expected output. Happy path testing can show that a system meets its functional requirements but it does not guarantee a graceful handling of error conditions or aid in finding hidden bugs. Happy day (or sunny day) scenario and golden path are slang synonyms for happy path. In use case analysis, there is only one happy...

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