unit testing is the first testing stage in software development. Validating each and every line of code in programs is called unit testing. All the single programs in software should under go unit testing to ensure that each and every single program is working fine independently.

Whit box testing techniques are used in Unit testing phase. There are 4 techniques in white box testing. They are

  1. Basic path Coverage
  2. Control Structure Coverage
  3. Programs Technique Coverage
  4. Mutation Coverage

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