White Box tests are a very effective method for quality of software applications improvement and a good prevention of untested code hand over to the end user.

White box testing verifies that the basic elements of code (methods / classes / functions, etc.) carry out the correct function when supplied with relevant inputs. It also includes verification of system behavior based on unexpected inputs, and thus can prevent a system crash.

This testing methodology helps to reduce the cascade errors, shortens the time required for repeated tests in future application versions and reduces total cost of the code maintenance.

White box testing covers mainly the following types of operations in the code:

• Statements
• Decision-making parameters
• Conditional parameters
• State parameters
• Multi-level decision-making
• Relational Operators
• Tables
• and more...