4. When Unit testing is performed. Requirement Phase / SRS / Prototype Designing Phase: HLD, LLD, Program Specification Coding / Creating Unit Test Cases UNIT TESTING The Unit Test Cases are created by the respective developers of the Module while performing the Unit Testing. The Tester can get the information either from all the documents or from any one document.
5. Hierarchy if Testing System Testing Integration Testing Functional Testing Unit Testing UAT (User Acceptance Testing)