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White box testing involves checking a variety of conditions in code, including: Security: Checking for security holes and vulnerabilities, and verifying that security best practices were followed Code coverage: Ensuring that all statements, branches, paths, and conditions are executed at least once Error handling: Verifying that the application handles errors and exceptions gracefully Data flow: Tracing the data flow to ensure it's processed and managed correctly Control flow: Analyzing the application's logical flow to ensure all possible execution paths are tested Loop testing: Checking single, concatenated, and nested loops for efficiency, conditional logic, and correct variable handling Expected output: Executing all possible inputs to a function to see if it returns the expected result read less

White box testing is a software testing method that examines the internal structure and code of an application. It can help identify issues early in the development process, which can save time and money. However, it can also be complex, time-consuming, and expensive. Here are some pros and cons of white box testing: Pros Early detection: White box testing can help identify issues early in the development process. Improved code quality: White box testing can help ensure that code is optimized for performance and reliability. Better collaboration: White box testing can help improve communication between developers and testers. Complete code coverage: White box testing can help ensure that all parts of the code are tested. Cons Complex and expensive: White box testing can be complex, time-consuming, and expensive. Requires qualified resources: White box testing may require additional and highly qualified resources. Sensitive to code changes: White box testing can be sensitive to changes in the code base, which can require expensive maintenance. Missed cases: White box testing can miss some cases. read less

The main difference between black box and white box testing is the level of access the tester has to the software: Black box testing Focuses on the software's functionality without considering its internal workings. Testers analyze the system's functionality by inputting data and observing the system's output. Black box testing is less exhaustive than white box testing and provides low-granularity reports. White box testing Involves examining the internal logic and structure of the code. Testers access the source code to assess the system's internal workings. White box testing is more comprehensive than black box testing and provides high-granularity reports. read less