Before:
  call ale#assert#SetUpLinterTest('tex', 'lacheck')

After:
  call ale#assert#TearDownLinterTest()

Execute(Executable should default to lacheck):
  AssertLinter 'lacheck', ale#Escape('lacheck') . ' %t'

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

  AssertLinter 'bin/foo' , ale#Escape('bin/foo') . ' %t'
