" Tests for the "sort()" function and for the ":sort" command.
source check.vim
func Compare1(a, b) abort
call sort(range(3), 'Compare2')
return a:a - a:b
endfunc
func Compare2(a, b) abort
return a:a - a:b
endfunc
func Test_sort_strings()
" numbers compared as strings
call assert_equal([1, 2, 3], sort([3, 2, 1]))
call assert_equal([13, 28, 3], sort([3, 28, 13]))
call assert_equal(['A', 'O', 'P', 'a', 'o', 'p'