What are the unit testing techniques?

Black Box Testing -  An application is tested based on its requirement specification without the knowledge of its internal structure.

•  Equivalence class partitioning
• Boundary value analysis
• Decision tables     

White Box Testing -  An application is tested based on the knowledge of the internal architecture of the application. tester analyse quality of the source code using different parameters like code optimization, code re-usability, code coverage. 

• Statement Testing
• Branch Testing
• Path Testing