What is not an advantage of white box testing?

In the context of white box testing, the fact that it usually has lower costs than black box testing is not considered an advantage. White box testing involves in-depth knowledge of the internal workings of the application, which typically requires skilled personnel to write and execute tests. This often leads to higher labor costs associated with the specialized skills needed.

On the other hand, the ability to uncover hidden errors is a significant advantage of white box testing. Because testers have access to the internal code and logic, they can identify issues that may not be visible through external testing methods.

Thoroughness in testing logic paths is another key benefit. White box testing allows for comprehensive execution of various code paths, which ensures that edge cases and complex logical scenarios are properly tested, reducing the likelihood of undetected bugs.

Additionally, the capability to optimize code through white box testing is notable. Since testers evaluate the internal logic and structure, they can recommend improvements that enhance performance and maintainability.

Thus, while the other aspects highlight the strengths of white box testing, the assertion that it usually has lower costs compared to black box testing does not accurately reflect its typical advantages or cost structure.