Before:

  Save g:ale_terraform_tflint_executable
  Save g:ale_terraform_tflint_options

  runtime ale_linters/terraform/tflint.vim


After:
  Restore
  call ale#linter#Reset()


Execute(The default executable should be configurable):
  AssertEqual 'tflint', ale_linters#terraform#tflint#GetExecutable(bufnr(''))

  let g:ale_terraform_tflint_executable = 'asdf'

  AssertEqual 'asdf', ale_linters#terraform#tflint#GetExecutable(bufnr(''))

Execute(The default command should be good):
  let g:ale_terraform_tflint_executable = 'tflint'
  AssertEqual
  \ ale#Escape('tflint') . ' -f json',
  \ ale_linters#terraform#tflint#GetCommand(bufnr(''))

Execute(Overriding things should work):
  let g:ale_terraform_tflint_executable = 'fnord'
  let g:ale_terraform_tflint_options = '--whatever'
  AssertEqual
  \ ale#Escape('fnord') . ' --whatever -f json',
  \ ale_linters#terraform#tflint#GetCommand(bufnr(''))