Before:
  runtime ale_linters/javascript/jscs.vim

After:
  call ale#linter#Reset()
  let g:ale_javascript_jscs_executable = 'jscs'

Execute(Should return the correct default values):
  AssertEqual
  \ 'jscs',
  \ ale_linters#javascript#jscs#GetExecutable(bufnr(''))
  AssertEqual
  \ ale#Escape('jscs') . ' --reporter inline --no-colors -',
  \ ale_linters#javascript#jscs#GetCommand(bufnr(''))


Execute(Should allow using a custom executable):
  let g:ale_javascript_jscs_executable = 'foobar'

  AssertEqual
  \ 'foobar',
  \ ale_linters#javascript#jscs#GetExecutable(bufnr(''))
  AssertEqual
  \ ale#Escape('foobar') . ' --reporter inline --no-colors -',
  \ ale_linters#javascript#jscs#GetCommand(bufnr(''))