only need to check the opening direction is correct

test/goto.vim

@@ -135,4 +135,35 @@ describe 'goto_with_buffers'
     end
 end
 
+
+
+describe 'goto_with_splits'
+    before
+        set filetype=python
+        let g:jedi#use_splits_not_buffers = 'left'
+    end
+
+    after
+        bd!
+        bd!
+    end
+
+    it 'follow_import'
+        put = ['import subprocess', 'subprocess']
+        silent normal G\g
+        Expect getline('.') == 'import subprocess'
+        Expect line('.') == 2
+        Expect col('.') == 8
+
+        silent normal G\d
+        Expect g:current_buffer_is_module('subprocess') == 1
+        Expect line('.') == 1
+        Expect col('.') == 1
+        wincmd l
+        Expect bufname('%') == ''
+    end
+
+end
+
+
 " vim: et:ts=4:sw=4