Before:
  call ale#assert#SetUpFixerTest('janet', 'janet-format')

After:
  call ale#assert#TearDownFixerTest()

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

Execute(The janet-format callback should allow a custom executable):
  let g:ale_janet_janet_format_executable = '/custom/path/to/janet-format'

  AssertFixer {
  \    'command': ale#Escape('/custom/path/to/janet-format') . ' %t',
  \    'read_temporary_file': 1,
  \}