1 files changed, 46 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_undolevels.vim b/src/nvim/testdir/test_undolevels.vim
new file mode 100644
index 0000000000..427cece24c
--- /dev/null
+++ b/src/nvim/testdir/test_undolevels.vim
@@ -0,0 +1,46 @@
+" Tests for 'undolevels'
+
+set nocompatible viminfo+=nviminfo
+
+func FillBuffer()
+  for i in range(1,13)
+    put=i
+    " Set 'undolevels' to split undo. 
+    exe "setg ul=" . &g:ul
+  endfor
+endfunc
+
+func Test_global_local_undolevels()
+  new one
+  set undolevels=5
+  call FillBuffer()
+  " will only undo the last 5 changes, end up with 13 - (5 + 1) = 7 lines
+  earlier 10
+  call assert_equal(5, &g:undolevels)
+  call assert_equal(-123456, &l:undolevels)
+  call assert_equal('7', getline('$'))
+
+  new two
+  setlocal undolevels=2
+  call FillBuffer()
+  " will only undo the last 2 changes, end up with 13 - (2 + 1) = 10 lines
+  earlier 10
+  call assert_equal(5, &g:undolevels)
+  call assert_equal(2, &l:undolevels)
+  call assert_equal('10', getline('$'))
+
+  setlocal ul=10
+  call assert_equal(5, &g:undolevels)
+  call assert_equal(10, &l:undolevels)
+
+  " Setting local value in "two" must not change local value in "one"
+  wincmd p
+  call assert_equal(5, &g:undolevels)
+  call assert_equal(-123456, &l:undolevels)
+
+  new three
+  setglobal ul=50
+  call assert_equal(50, &g:undolevels)
+  call assert_equal(-123456, &l:undolevels)
+
+endfunc