Before:
  Save g:ale_dart_dartanalyzer_executable
  unlet! g:ale_dart_dartanalyzer_executable

  runtime ale_linters/dart/dartanalyzer.vim

  call ale#test#SetDirectory('/testplugin/test/command_callback')

After:
  Restore

  call ale#test#RestoreDirectory()
  call ale#linter#Reset()

Execute(The default command and executable should be correct):
  AssertEqual
  \ 'dartanalyzer',
  \ ale_linters#dart#dartanalyzer#GetExecutable(bufnr(''))
  AssertEqual
  \ ale#Escape('dartanalyzer') . ' %s',
  \ ale_linters#dart#dartanalyzer#GetCommand(bufnr(''))

Execute(The executable should be configurable):
  let g:ale_dart_dartanalyzer_executable = '/usr/lib/dart/bin/dartanalyzer'

  AssertEqual
  \ '/usr/lib/dart/bin/dartanalyzer',
  \ ale_linters#dart#dartanalyzer#GetExecutable(bufnr(''))
  AssertEqual
  \ ale#Escape('/usr/lib/dart/bin/dartanalyzer') . ' %s',
  \ ale_linters#dart#dartanalyzer#GetCommand(bufnr(''))

Execute(The .packages file should be set if detected):
  call ale#test#SetFilename('dart_paths/foo')

  AssertEqual
  \ ale#Escape('dartanalyzer')
  \   . ' --packages ' . ale#Escape(ale#path#Winify(g:dir . '/dart_paths/.packages'))
  \   . ' %s',
  \ ale_linters#dart#dartanalyzer#GetCommand(bufnr(''))