There is a unique combination in each column.Ĭomparison of Black Box and White Box Testing: Decision Table Testing: A decision table puts causes and their effects in a matrix.It is most suitable for the systems where an input is within certain ranges. It is very useful in reducing the number of test cases. This technique determines whether a certain range of values are acceptable by the system or not. Boundary Value Testing: Boundary value testing is focused on the values at boundaries.Equivalence Class Testing: It is used to minimize the number of possible test cases to an optimum level while maintains reasonable test coverage.Defects if any are fixed and re-tested.įollowing are the prominent Test Strategy amongst the many used in Black box Testing.Software tester compares the actual outputs with the expected outputs.Software tester constructs test cases with the selected inputs.Tester determines expected outputs for all those inputs.Also, some invalid inputs (negative test scenario) are chosen to verify that the SUT is able to detect them. Tester chooses valid inputs (positive test scenario) to check whether SUT processes them correctly.Initially, the requirements and specifications of the system are examined.Here are the generic steps followed to carry out any type of Black Box Testing. Consider the following video tutorial-Ĭlick here if the video is not accessible
Under Black Box Testing, you can test these applications by just focusing on the inputs and outputs without knowing their internal code implementation.
For Example, an operating system like Windows, a website like Google, a database like Oracle or even your own custom application. The above Black-Box can be any software system you want to test. Black Box Testing mainly focuses on input and output of software applications and it is entirely based on software requirements and specifications. Black Box Testing is a software testing method in which the functionalities of software applications are tested without having knowledge of internal code structure, implementation details and internal paths.
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