Out of the multiple software testing techniques, methods, and processes, two of the most prominent ones are White Box Testing and Black Box Testing.
This testing methodology enables a tester (software developers, in general) to look into the internal structure and sub-system of an application while testing. It provides a degree of sophistication and freedom to a tester, allowing him/her to interact with an application’s objects and not only just the interface. Some of the techniques of white-box testing include statement coverage, decision coverage, condition coverage, decision/condition coverage, and multiple condition coverage.
In this method, a tester tests the software without having access to the internal structure or code of an application/program/software. He/she only looks at the available inputs and the expected output from each input. Some of the techniques of black-box testing are boundary value analysis, equivalence class partitioning, decision table-based testing, cause-effect graphing technique, and error guessing.
A tabular representation of the differences between white-box testing and black-box testing is displayed below:
In conclusion, both white box testing and black box testing have their own unique features, advantages, and disadvantages. Both methods address particular non-redundant needs, and in that respect, they should be employed in a complementary manner to be assured of the comprehensiveness of the software testing process.
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