Before:
call ale#assert#SetUpLinterTest('elixir', 'mix')
call ale#test#SetFilename('elixir_paths/mix_project/lib/app.ex')
let g:env_prefix = ale#Env('MIX_BUILD_PATH', 'TEMP_DIR')
After:
unlet! g:env_prefix
call ale#assert#TearDownLinterTest()
Execute(The default mix command should be correct):
AssertLinterCwd ale#path#Simplify(g:dir . '/elixir_paths/mix_project')
AssertLinter 'mix', g:env_prefix . 'mix compile %s'
Execute(Build mix commands with an umbrella root):
call ale#test#SetFilename('elixir_paths/umbrella_project/apps/mix_project/lib/app.ex')
AssertLinterCwd ale#path#Simplify(g:dir . '/elixir_paths/umbrella_project')