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White-box Testing

All internal components are exercised and tests are conducted to ensure that operations perform according to specifications

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White box testing assumes that the testers involved can look at the application code. In this type of testing, testers can look for potential failure scenarios in the code itself and ensure each class is behaving the way it’s supposed to. All internal components are exercised and tests are conducted to ensure that operations perform according to specifications. Sometimes this type of testing is referred to as unit testing.

Test plans or test cases for white box testing can only be done after a stable version of the application, or application block is available. Testers will perform code reviews in order to profile code coverage, resource utilization or leaks. Internal subroutines are identified and tested for integrity and consistency.

Strategies for white box testing include segment coverage to ensure each statement is run at least once, condition coverage to test each multiple-path combination, data flow testing to track variables throughout calculations, and much more. White box testing ensures that all independent paths are exercised, all logical decisions are verified, and all loops are executed at their boundaries.

The most common kinds of defects found in white box testing are logical errors, design errors, and incorrect syntax.

How we do it

  • Review and analyze functional specifications and design documents
  • Develop appropriate test cases
  • Execute agreed upon test cases
  • Log and report defects
  • Discuss defects and/or issues with your team
  • Regression test after any changes

 

If you’re ready to take the next step and let QA Mentor help you with your Functional Testing

Benefits to a Customer

  • Can find defects that would not be found in other testing types
  • Ensures that all code is executed so that complete code coverage is achieved

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