**White Box Testing
White Box Testing is a software testing technique in which the internal structure, source code, logic, and implementation of a program are examined and **tested. **The tester has knowledge of the internal working of the software.
It is also called Structural Testing, Clear Box Testing, or Glass Box Testing.**
Techniques of White Box Testing**
- Statement Coverage**
Checks whether every statement in the program is executed at least once.
2. Branch Coverage
Checks whether every decision has been tested for both outcomes, such as True and False.
3. Path Coverage
Tests different possible execution paths through the program.
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- Condition Coverage**
Tests individual conditions in a decision to ensure they produce both True and False results.
5. Loop Testing
Tests loops with different conditions, such as:
Zero iterations
One iteration
Multiple iterations
Maximum iterations
Advantages
Helps find errors in the program's internal logic.
Improves code quality.
Helps identify unused or unnecessary code.
Provides better test coverage.
Can detect logical and programming errors early.
Useful for optimizing program code.
Disadvantages
Requires knowledge of programming and source code.
Can be time-consuming for large applications.
Difficult to test every possible path in complex programs.
Usually requires skilled testers or developers.
Does not focus primarily on the software's external behavior from a user's perspective.
