number_format (case 1) Separator Overrride
number_format (case 2) locale=C
number_format (case 3) locale=en_US.utf8
number_format (case 4) locale=fr_CA.utf8
number_format (case 5) locale=de_DE.utf8
number_format (case 6) locale=en_DK.utf8
numberformat results: 6 test cases, 6 pass, 0 fail