Before:
  Save g:ale_tcl_nagelfar_executable
  Save g:ale_tcl_nagelfar_options

  unlet! g:ale_tcl_nagelfar_executable
  unlet! b:ale_tcl_nagelfar_executable
  unlet! g:ale_tcl_nagelfar_options
  unlet! b:ale_tcl_nagelfar_options

  runtime ale_linters/tcl/nagelfar.vim

After:
  Restore
  unlet! b:command_tail
  unlet! b:ale_tcl_nagelfar_executable
  unlet! b:ale_tcl_nagelfar_options
  call ale#linter#Reset()

Execute(The executable should be configurable):
  AssertEqual 'nagelfar.tcl', ale_linters#tcl#nagelfar#GetExecutable(bufnr(''))

  let b:ale_tcl_nagelfar_executable = 'foobar'

  AssertEqual 'foobar', ale_linters#tcl#nagelfar#GetExecutable(bufnr(''))

Execute(The executable should be used in the command):
  AssertEqual
  \ ale#Escape('nagelfar.tcl') . ' %s',
  \ ale_linters#tcl#nagelfar#GetCommand(bufnr(''))

  let b:ale_tcl_nagelfar_executable = 'foobar'

  AssertEqual
  \ ale#Escape('foobar') . ' %s',
  \ ale_linters#tcl#nagelfar#GetCommand(bufnr(''))

Execute(The options should be configurable):
  let b:ale_tcl_nagelfar_options = '--something'

  AssertEqual
  \ ale#Escape('nagelfar.tcl') . ' --something %s',
  \ ale_linters#tcl#nagelfar#GetCommand(bufnr(''))