Before:
  call ale#assert#SetUpLinterTest('ruby', 'standardrb')
  call ale#test#SetFilename('dummy.rb')

  let g:ale_ruby_standardrb_executable = 'standardrb'
  let g:ale_ruby_standardrb_options = ''

After:
  call ale#assert#TearDownLinterTest()

Execute(Executable should default to standardrb):
  AssertLinter 'standardrb', ale#Escape('standardrb')
  \   . ' --format json --force-exclusion  --stdin %s'

Execute(Should be able to set a custom executable):
  let g:ale_ruby_standardrb_executable = 'bin/standardrb'

  AssertLinter 'bin/standardrb' , ale#Escape('bin/standardrb')
  \   . ' --format json --force-exclusion  --stdin %s'

Execute(Setting bundle appends 'exec standardrb'):
  let g:ale_ruby_standardrb_executable = 'path to/bundle'

  AssertLinter 'path to/bundle', ale#Escape('path to/bundle')
  \   . ' exec standardrb'
  \   . ' --format json --force-exclusion  --stdin %s'