Before:
  call ale#assert#SetUpLinterTest('haskell', 'stack_ghc')

After:
  call ale#assert#TearDownLinterTest()

Execute(The linter should not be executed when there's no stack.yaml file):
  AssertLinterNotExecuted

Execute(The linter should be executed when there is a stack.yaml file):
  call ale#test#SetFilename('stack_ghc_paths/test.hs')

  AssertLinter 'stack', 'stack ghc -- -fno-code -v0 %t'

  let b:ale_haskell_stack_ghc_options = 'foobar'

  AssertLinter 'stack', 'stack ghc -- foobar %t'