Brought error testing out of test_goes_chianti_tem() and into new function, test_goes_chianti_tem_errors().
Brought error testing out of test_goes_chianti_tem() and into new function,
test_goes_chianti_tem_errors().

Alex-Ian-Hamilton/sunpy,dpshelio/sunpy,Alex-Ian-Hamilton/sunpy,dpshelio/sunpy,Alex-Ian-Hamilton/sunpy,dpshelio/sunpy