patch 8.1.1881: popup window test fails in some configurations
Problem: Popup window test fails in some configurations.
Solution: Check that screendumps can be made.
diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index 5de7255..07ed81b 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -2194,6 +2194,8 @@
endfunc
func Test_popupmenu_info()
+ CheckScreendump
+
let lines =<< trim END
set completeopt+=preview,popup
set completefunc=CompleteFuncDict