Three are three main methods of software testing:

  • Black-box testing – Uses just specifications and requirements for testing. It doesn’t require any knowledge of the structure, implementation and internal path of the software.
  • White-box testing –  Created using code structures, implementation, and internal paths of the software. For this, detailed programming skills are required.
  • Gray-box testing – Used for software debugging where the tester has some knowledge of the software’s internal details.