commit https://github.com/vim/vim/commit/ac105ed3c420660ddbddc501c97875c48220817e Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jul 21 20:33:32 2016 +0200 patch 7.4.2086 Problem: Using the system default encoding makes tests unpredictable. Solution: Always use utf-8 or latin1 in the new style tests. Remove setting encoding and scriptencoding where it is not needed.

" Tests for Visual mode.  Uses double-wide character.
if !has('multi_byte')
  finish
endif

if !has('visual')
  finish
endif

func Test_block_shift_multibyte()
  split
  call setline(1, ['xヹxxx', 'ヹxxx'])
  exe "normal 1G0l\<C-V>jl>"
  call assert_equal('x	 ヹxxx', getline(1))
  call assert_equal('	ヹxxx', getline(2))
  q!
endfunc