Execute ( SpaceVim api: data#string ):
  if !has('patch-8.2.3395')
    finish
  endif
  let str = SpaceVim#api#import('data#string')
  AssertEqual str.string2chars('你好'), ['你', '好']
  Log 'test strQ2B()'
  AssertEqual str.strQ2B('％'), '%'
  Log 'test strB2Q()'
  AssertEqual str.strB2Q('%'), '％'