Execute ( SpaceVim lua api: data#string ):
  if $SPACEVIM_LUA != 1
    finish
  endif
  let cmp = SpaceVim#api#import('vim#compatible')
  Log 'test trim()'
  lua sp_str = require('spacevim.api').import('data.string')
  AssertEqual cmp.luaeval("sp_str.trim(' s b ')"), 's b'