diff --git a/test/fixers/test_isort_fixer_callback.vader b/test/fixers/test_isort_fixer_callback.vader
index 7f389dcf..76c8a4cb 100644
--- a/test/fixers/test_isort_fixer_callback.vader
+++ b/test/fixers/test_isort_fixer_callback.vader
@@ -5,6 +5,7 @@ Before:
   " Use an invalid global executable, so we don't match it.
   let g:ale_python_isort_executable = 'xxxinvalid'
   let g:ale_python_isort_options = ''
+  let g:ale_python_isort_auto_pipenv = 0
 
   call ale#test#SetDirectory('/testplugin/test/fixers')
   silent cd ..
@@ -48,3 +49,12 @@ Execute(The isort callback should respect custom options):
   \     . ' --multi-line=3 --trailing-comma -',
   \ },
   \ ale#fixers#isort#Fix(bufnr(''))
+
+Execute(Pipenv is detected when python_isort_auto_pipenv is set):
+  let g:ale_python_isort_auto_pipenv = 1
+
+  call ale#test#SetFilename('/testplugin/test/python_fixtures/pipenv/whatever.py')
+
+  AssertEqual
+  \ {'command': 'cd %s:h && ' . ale#Escape('pipenv') . ' run isort -'},
+  \ ale#fixers#isort#Fix(bufnr(''))