April 29, 2008

Black box Testing

Black Box Testing is testing without knowledge of the internal workings of the item being tested. For example, when black box testing is applied to software engineering, the tester would only know the "legal" inputs and what the expected outputs should be, but has no idea how the program actually arrives at those outputs.

Take a simple example of coffee machine:-

We give input, water, milk and coffee powder.
Output- Our coffee is ready to consume.

We know if we will provide these inputs, this will be our output, but we don't know anything, how machine works, make it. That is nothing but black box testing.

Black box testing is testing with respect to specifications and customer requirements.

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