Business Definition: Testing to be performed on an application and it comes under the category of positive testing. In happy path testing, the focus is on running carefully scripted test scenarios, which should be the same as an end-user would perform when they use the application in a regular way. The purpose is not to "break" the functionality, but to see a product or procedure work as it has been designed to. Technical Definition: A default scenario featuring no exceptional or error conditions. The happy path would be where none of the validation rules raise an error, thus letting execution continue successfully to the end, generating a positive response. Happy path testing is a well-defined test case using known input, which executes without exception and produces an expected output.