add explicit tests of new methods
add explicit tests of new methods

bsipocz/astropy,pllim/astropy,kelle/astropy,larrybradley/astropy,bsipocz/astropy,joergdietrich/astropy,tbabej/astropy,MSeifert04/astropy,larrybradley/astropy,stargaser/astropy,aleksandr-bakanov/astropy,kelle/astropy,mhvk/astropy,funbaker/astropy,lpsinger/astropy,astropy/astropy,joergdietrich/astropy,MSeifert04/astropy,saimn/astropy,pllim/astropy,stargaser/astropy,StuartLittlefair/astropy,kelle/astropy,aleksandr-bakanov/astropy,DougBurke/astropy,AustereCuriosity/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,tbabej/astropy,DougBurke/astropy,dhomeier/astropy,AustereCuriosity/astropy,saimn/astropy,bsipocz/astropy,lpsinger/astropy,MSeifert04/astropy,DougBurke/astropy,astropy/astropy,dhomeier/astropy,dhomeier/astropy,pllim/astropy,astropy/astropy,bsipocz/astropy,lpsinger/astropy,stargaser/astropy,mhvk/astropy,StuartLittlefair/astropy,dhomeier/astropy,funbaker/astropy,astropy/astropy,AustereCuriosity/astropy,mhvk/astropy,tbabej/astropy,lpsinger/astropy,mhvk/astropy,mhvk/astropy,aleksandr-bakanov/astropy,AustereCuriosity/astropy,pllim/astropy,lpsinger/astropy,tbabej/astropy,saimn/astropy,larrybradley/astropy,kelle/astropy,DougBurke/astropy,joergdietrich/astropy,StuartLittlefair/astropy,pllim/astropy,funbaker/astropy,astropy/astropy,stargaser/astropy,aleksandr-bakanov/astropy,kelle/astropy,MSeifert04/astropy,tbabej/astropy,funbaker/astropy,larrybradley/astropy,AustereCuriosity/astropy,larrybradley/astropy,joergdietrich/astropy,saimn/astropy,joergdietrich/astropy,saimn/astropy,dhomeier/astropy