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What is meant by preconditions and postconditions in a Test
Case? Can anyone give an example?
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Answer Posted / steve b
If I am testing a household plumbing system, one part of that may be the functionality of a tap (water). The Pre-Condition may be that the tap is connected to the water mains and the stop cock is open. The Expected result is - water flows from the tap and is cold (hot water tap would also need (boiler connected and operational as a pre-condition and tested first). The post-condition may be - the sink fills up (whilst some may see this as part of a result, it isn't as the plug may not be in place so therefore may not fill. This operation would be a different test) The idea of post-conditions is that they illuminate other areas of operation that may require consequential testing - as above - the sink may overflow so we need to test if the drainage of the sink works also.
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