Random testing: Difference between revisions

Revision as of 10:32, 29 August 2015

Revision as of 17:25, 19 September 2015

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Now the random tests for this function could be {123, 36, -35, 48, 0}. Only the value '-35' triggers the bug. If there is no reference implementation to check the result, the bug still could bego noticedunnoticed. However, an assertion could be added to check the results, like:

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While this example is limited to simple types (for which a simple random generator can be used), tools targeting object-oriented languages typically explore the program to test and find generators (constructors or methods returning objects of that type) and call them using random inputs (either themselves generated the same way or generated using a pseudo-random generator if possible). Such approaches then maintain a pool of randomly generated objects and use a probability for either reusing a generated object or creating a new one.<ref name="AutoTest"/>

== On randomness ==