diff --git a/test/expand.vim b/test/expand.vim
index 37804ee..b8e5843 100644
--- a/test/expand.vim
+++ b/test/expand.vim
@@ -45,6 +45,19 @@ function! s:suite.custom_type()
   delfunction Custom
 endfunction
 
+function! s:suite.raw_type()
+  function! Custom()
+    return [ ['left'], ['middle'], ['right'] ]
+  endfunction
+  let g:lightline = { 'component_expand': { 'custom': 'Custom' }, 'component_type': { 'custom': 'raw' } }
+  call lightline#init()
+  call s:assert.equals(s:expand([['readonly', 'filename'], ['custom'], ['modified']]),
+        \ [[['readonly', 'filename'], ['left', 'middle', 'right'], ['modified']], [[0, 0], [2, 2, 2], [0]], ['0', '1', '2', '3']])
+  call s:assert.equals(s:expand([['readonly', 'filename', 'custom', 'modified']]),
+        \ [[['readonly', 'filename', 'left', 'middle', 'right', 'modified']], [[0, 0, 2, 2, 2, 0]], ['0', '1']])
+  delfunction Custom
+endfunction
+
 function! s:suite.multiple()
   function! Custom()
     return [ ['x0', 'x1', 'x2'], ['y0', 'y1', 'y2'], ['z0', 'z1', 'z2'] ]