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-rw-r--r--test/functional/api/window_spec.lua33
1 files changed, 33 insertions, 0 deletions
diff --git a/test/functional/api/window_spec.lua b/test/functional/api/window_spec.lua
index 774ec406a8..ecab6a4713 100644
--- a/test/functional/api/window_spec.lua
+++ b/test/functional/api/window_spec.lua
@@ -7,6 +7,7 @@ local clear, nvim, curbuf, curbuf_contents, window, curwin, eq, neq,
helpers.tabpage
local poke_eventloop = helpers.poke_eventloop
local curwinmeths = helpers.curwinmeths
+local exec = helpers.exec
local funcs = helpers.funcs
local request = helpers.request
local NIL = helpers.NIL
@@ -283,6 +284,22 @@ describe('API/win', function()
window('set_height', nvim('list_wins')[2], 2)
eq(2, window('get_height', nvim('list_wins')[2]))
end)
+
+ it('do not cause ml_get errors with foldmethod=expr #19989', function()
+ insert([[
+ aaaaa
+ bbbbb
+ ccccc]])
+ command('set foldmethod=expr')
+ exec([[
+ new
+ let w = nvim_get_current_win()
+ wincmd w
+ call nvim_win_set_height(w, 5)
+ ]])
+ feed('l')
+ eq('', meths.get_vvar('errmsg'))
+ end)
end)
describe('{get,set}_width', function()
@@ -297,6 +314,22 @@ describe('API/win', function()
window('set_width', nvim('list_wins')[2], 2)
eq(2, window('get_width', nvim('list_wins')[2]))
end)
+
+ it('do not cause ml_get errors with foldmethod=expr #19989', function()
+ insert([[
+ aaaaa
+ bbbbb
+ ccccc]])
+ command('set foldmethod=expr')
+ exec([[
+ vnew
+ let w = nvim_get_current_win()
+ wincmd w
+ call nvim_win_set_width(w, 5)
+ ]])
+ feed('l')
+ eq('', meths.get_vvar('errmsg'))
+ end)
end)
describe('{get,set,del}_var', function()