Before:
  call ale#assert#SetUpFixerTest('clojure', 'cljfmt')

After:
  call ale#assert#TearDownFixerTest()

Execute(The cljfmt callback should return the correct default values):
  AssertFixer {
  \    'command': ale#Escape('cljfmt') . ' fix %t',
  \    'read_temporary_file': 1,
  \}

