Before:
  Save g:ale_v_v_executable
  Save g:ale_v_vfmt_options

  " Use an invalid global executable, so we don't match it.
  let g:ale_v_v_executable = 'xxxinvalid'
  let g:ale_v_vfmt_options = ''

  call ale#test#SetDirectory('/testplugin/test/fixers')

After:
  Restore

  call ale#test#RestoreDirectory()

Execute(The vfmt callback should return the correct default values):
  call ale#test#SetFilename('../v_files/testfile.v')

  AssertEqual
  \ {
  \   'command': ale#Escape('xxxinvalid') . ' fmt',
  \ },
  \ ale#fixers#vfmt#Fix(bufnr(''))

Execute(The vfmt callback should include custom vfmt options):
  let g:ale_v_vfmt_options = "-r '(a) -> a'"

  call ale#test#SetFilename('../v_files/testfile.v')

  AssertEqual
  \ {
  \   'command': ale#Escape('xxxinvalid')
  \     . ' fmt ' . g:ale_v_vfmt_options,
  \ },
  \ ale#fixers#vfmt#Fix(bufnr(''))

Execute(The vfmt callback should support Go environment variables):
  call ale#test#SetFilename('../v_files/testfile.v')

  AssertEqual
  \ {
  \   'command': ale#Escape('xxxinvalid') . ' fmt',
  \ },
  \ ale#fixers#vfmt#Fix(bufnr(''))