Why not use "equalsTo:"? Floats are tricky, you either round your result before comparing or change the comparison method.
0.333333333333333333 equalsTo: (1/3) "true" Regards! Esteban A. Maringolo 2016-09-02 15:41 GMT-03:00 stepharo <steph...@free.fr>: > Hi > > I'm writing a simple converter between Celcius and Farhenheit as an example > to start programming. > > > Converter >> convertFarhenheit: anInteger > ^ ((anInteger - 32) / 1.8) > > ConverterTest >> testFToC > > | converter | > converter := TemperatureConverter new. > self assert: ((converter convertFarhenheit: 86) = 30.0). > self assert: ((converter convertFarhenheit: 50) = 10). > self assert: ((converter convertFarhenheit: 52) = 11.11111111111111) > > > My problem is with ((converter convertFarhenheit: 52) = 11.11111111111111) > > I do not want to have such ugly test. > > I tried either to control the output > > Converter >> convertFarhenheit: anInteger > ^ ((anInteger - 32) / 1.8) roundDownTo: 0.1 > > Not a good idea > > Or to compare with closeTo: > > self assert: ((converter convertFarhenheit: 52) closeTo: 11.11) > > does not work because we cannot set the precision. > > So at ESUG I briefly discuss that with Nicolas Cellier and I need help. > > Should I introduce in pharo closeTo:interval: > > Any suggestions that a newby can understand is welcome. > > > Stef > > >
