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

After:
  call ale#assert#TearDownLinterTest()

Execute(The default ghc command should be correct):
  AssertLinter 'ghc', 'ghc -fno-code -v0 %t'

Execute(The ghc options should be configurable):
  let b:ale_haskell_ghc_options = 'foobar'

  AssertLinter 'ghc', 'ghc foobar %t'