Tests and perception, a vaster scope

Résumé En

Tests are based on a principle: to get results conform to expectations according to some rules. However the comparison of both processes is delimited by perception. Usually these perceptions of input data and output data are overlooked, yet they do exist. These four operations are modelled by a square reproducing a well-know diagram in the mathematical theory of categories. The subjective side induced by perception is reduced to a minimum in program testing, and objectivity is assumed with an analysis of criteria, functions and partition testing, hence of results of tests. However it can't be ignored in Non Functional Requirements, test expectations - which can themselves be tested - or about testing the understanding of business needs. Phenomenology can be modelled and these models can help to broaden the scope of tests, that's what this paper is aiming at. By dividing a math graph in semi-edges, one gets whorls - i.e. arrows without defined ends - which have a law of composition. Whorls are thus modelling perceptions and gestures, taking into account the gestation and the undefined. Plato already mentioned that a definition is based on undefined elements. Thus whorls broaden the scope of interactions in integrating the movement. In a larger frame, loop arrows describe a return to One self in a rotation - through the Other - a pulsation is describing a return to oneself - though the Same - and spirals or whorls -in a mixed way - are describing relation to oneself in progression.