1 files changed, 58 insertions, 0 deletions
diff --git a/test/functional/legacy/undolevels_spec.lua b/test/functional/legacy/undolevels_spec.lua
new file mode 100644
index 0000000000..41274b3a04
--- /dev/null
+++ b/test/functional/legacy/undolevels_spec.lua
@@ -0,0 +1,58 @@
+local helpers = require('test.functional.helpers')
+local source, clear = helpers.source, helpers.clear
+local eq, nvim = helpers.eq, helpers.meths
+
+describe('undolevel', function()
+  setup(clear)
+
+  it('is working', function()
+    source([[
+      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
+
+      call Test_global_local_undolevels()
+    ]])
+
+    eq({}, nvim.get_vvar('errors'))
+  end)
+end)