Before:
  call ale#assert#SetUpFixerTest('python', 'pyflyby')

  let b:bin_dir = has('win32') ? 'Scripts' : 'bin'

After:
  call ale#assert#TearDownFixerTest()

  unlet! b:bin_dir

Execute(The pyflyby callback should return the correct default values):
  call ale#test#SetFilename('../test-files/python/with_virtualenv/subdir/foo/bar.py')

  AssertFixer
  \ {
  \   'command': ale#Escape(ale#path#Simplify(g:dir . '/../test-files/python/with_virtualenv/env/' . b:bin_dir . '/tidy-imports')),
  \ }

Execute(Pipenv is detected when python_pyflyby_auto_pipenv is set):
  let g:ale_python_pyflyby_auto_pipenv = 1

  call ale#test#SetFilename('../test-files/python/pipenv/whatever.py')

  AssertFixer
  \ {
  \   'command': ale#Escape('pipenv') . ' run tidy-imports'
  \ }

Execute(Poetry is detected when python_pyflyby_auto_poetry is set):
  let g:ale_python_pyflyby_auto_poetry = 1

  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')

  GivenCommandOutput ['VERSION 5.7.0']
  AssertFixer
  \ {
  \   'command': ale#Escape('poetry') . ' run tidy-imports'
  \ }