Before:
  call ale#assert#SetUpFixerTest('go', 'gofumpt')

After:
  call ale#assert#TearDownFixerTest()

Execute(The gofumpt callback should return the correct default values):
  AssertFixer {
  \    'read_temporary_file': 1,
  \    'command': ale#Escape('gofumpt') . ' -w -- %t'
  \}

Execute(The gofumpt callback should allow custom gofumpt executables):
  let g:ale_go_gofumpt_executable = 'foo/bar'

  AssertFixer {
  \    'read_temporary_file': 1,
  \    'command': ale#Escape('foo/bar') . ' -w -- %t'
  \}

Execute(The gofumpt callback should allow custom gofumpt options):
  let g:ale_go_gofumpt_options = '--foobar'

  AssertFixer {
  \    'read_temporary_file': 1,
  \    'command': ale#Escape('gofumpt') . ' --foobar -w -- %t'
  \}