Execute ( SpaceVim mode ):
  let toml = SpaceVim#api#import('data#toml')
  let basic = toml.parse_file('mode/basic.toml')
  let dark = toml.parse_file('mode/dark_powered.toml')
  AssertEqual basic.options.statusline_separator, 'nil'
  unlet toml
  unlet basic
  unlet dark