fix bug in test
fix bug in test

mhvk/astropy,astropy/astropy,lpsinger/astropy,lpsinger/astropy,lpsinger/astropy,mhvk/astropy,larrybradley/astropy,astropy/astropy,larrybradley/astropy,mhvk/astropy,pllim/astropy,pllim/astropy,pllim/astropy,pllim/astropy,lpsinger/astropy,larrybradley/astropy,pllim/astropy,larrybradley/astropy,astropy/astropy,mhvk/astropy,larrybradley/astropy,astropy/astropy,astropy/astropy,mhvk/astropy,lpsinger/astropy