vim/src/testdir/test_options.vim

" Test for options

function! Test_whichwrap()
  set whichwrap=b,s
  call assert_equal('b,s', &whichwrap)

  set whichwrap+=h,l
  call assert_equal('b,s,h,l', &whichwrap)

  set whichwrap+=h,l
  call assert_equal('b,s,h,l', &whichwrap)

  set whichwrap+=h,l
  call assert_equal('b,s,h,l', &whichwrap)

  set whichwrap&
endfunction

function Test_options()
  let caught = 'ok'
  try
    options
  catch
    let caught = v:throwpoint . "\n" . v:exception
  endtry
  call assert_equal('ok', caught)

  " close option-window
  close
endfunction

function Test_path_keep_commas()
  " Test that changing 'path' keeps two commas.
  set path=foo,,bar
  set path-=bar
  set path+=bar
  call assert_equal('foo,,bar', &path)

  set path&
endfunction

func Test_signcolumn()
  if has('signs')
    call assert_equal("auto", &signcolumn)
    set signcolumn=yes
    set signcolumn=no
    call assert_fails('set signcolumn=nope')
  endif
endfunc

func Test_filetype_valid()
  if !has('autocmd')
    return
  endif
  set ft=valid_name
  call assert_equal("valid_name", &filetype)
  set ft=valid-name
  call assert_equal("valid-name", &filetype)

  call assert_fails(":set ft=wrong;name", "E474:")
  call assert_fails(":set ft=wrong\\\\name", "E474:")
  call assert_fails(":set ft=wrong\\|name", "E474:")
  call assert_fails(":set ft=wrong/name", "E474:")
  call assert_fails(":set ft=wrong\\\nname", "E474:")
  call assert_equal("valid-name", &filetype)

  exe "set ft=trunc\x00name"
  call assert_equal("trunc", &filetype)
endfunc

func Test_syntax_valid()
  if !has('syntax')
    return
  endif
  set syn=valid_name
  call assert_equal("valid_name", &syntax)
  set syn=valid-name
  call assert_equal("valid-name", &syntax)

  call assert_fails(":set syn=wrong;name", "E474:")
  call assert_fails(":set syn=wrong\\\\name", "E474:")
  call assert_fails(":set syn=wrong\\|name", "E474:")
  call assert_fails(":set syn=wrong/name", "E474:")
  call assert_fails(":set syn=wrong\\\nname", "E474:")
  call assert_equal("valid-name", &syntax)

  exe "set syn=trunc\x00name"
  call assert_equal("trunc", &syntax)
endfunc

func Test_keymap_valid()
  if !has('keymap')
    return
  endif
  call assert_fails(":set kmp=valid_name", "E544:")
  call assert_fails(":set kmp=valid_name", "valid_name")
  call assert_fails(":set kmp=valid-name", "E544:")
  call assert_fails(":set kmp=valid-name", "valid-name")

  call assert_fails(":set kmp=wrong;name", "E474:")
  call assert_fails(":set kmp=wrong\\\\name", "E474:")
  call assert_fails(":set kmp=wrong\\|name", "E474:")
  call assert_fails(":set kmp=wrong/name", "E474:")
  call assert_fails(":set kmp=wrong\\\nname", "E474:")

  call assert_fails(":set kmp=trunc\x00name", "E544:")
  call assert_fails(":set kmp=trunc\x00name", "trunc")
endfunc

func Check_dir_option(name)
  " Check that it's possible to set the option.
  exe 'set ' . a:name . '=/usr/share/dict/words'
  call assert_equal('/usr/share/dict/words', eval('&' . a:name))
  exe 'set ' . a:name . '=/usr/share/dict/words,/and/there'
  call assert_equal('/usr/share/dict/words,/and/there', eval('&' . a:name))
  exe 'set ' . a:name . '=/usr/share/dict\ words'
  call assert_equal('/usr/share/dict words', eval('&' . a:name))

  " Check rejecting weird characters.
  call assert_fails("set " . a:name . "=/not&there", "E474:")
  call assert_fails("set " . a:name . "=/not>there", "E474:")
  call assert_fails("set " . a:name . "=/not.*there", "E474:")
endfunc

func Test_dictionary()
  call Check_dir_option('dictionary')
endfunc

func Test_thesaurus()
  call Check_dir_option('thesaurus')
endfunc