#77 achieve 100% test coverage for indicators - minusdi
#77 achieve 100% test coverage for indicators - minusdm
#77 achieve 100% test coverage for indicators - mom
#77 achieve 100% test coverage for indicators - obv
#77 achieve 100% test coverage for indicators - plusdi
#77 achieve 100% test coverage for indicators - plusdm
#77 achieve 100% test coverage for indicators - roc
#77 achieve 100% test coverage for indicators - rocp
#77 achieve 100% test coverage for indicators - rocr
#77 achieve 100% test coverage for indicators - rocr100
#77 achieve 100% test coverage for indicators - rsi
#77 achieve 100% test coverage for indicators - sar
#77 achieve 100% test coverage for indicators - sma