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test(api/ui_spec): fix flaky test (#40767)

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The poke_eventloop() and screen:expect() sometimes don't run the test
runner's event loop long enough for the data to arrive at the reading
end of the pipe. Use a screen:expect_unchanged() so that the event loop
can run a bit longer.

FAILED   ...ovim/build/Xtest_xdg_api/test/functional/api/ui_spec.lua @ 105: nvim_ui_send works with stdout_tty
Expected values to be equal.
Expected:
"\27]11;?\7Hello world"
Actual:
"\27]11;?\7"
stack traceback:
	...ovim/build/Xtest_xdg_api/test/functional/api/ui_spec.lua:138: in function <...ovim/build/Xtest_xdg_api/test/functional/api/ui_spec.lua:105>
This commit is contained in:
zeertzjq
2026-07-16 19:36:13 +08:00
committed by GitHub
parent 16c25e8aee
commit 7c091348af
1 changed files with 8 additions and 9 deletions
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17
test/functional/api/ui_spec.lua
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@@ -11,7 +11,6 @@ local exec_lua = n.exec_lua
local feed = n.feed
local api = n.api
local request = n.request
local poke_eventloop = n.poke_eventloop
local pcall_err = t.pcall_err
local uv = vim.uv
@@ -123,16 +122,16 @@ describe('nvim_ui_send', function()
close_pipe(read_pipe)
end)
api.nvim_ui_send('Hello world')
poke_eventloop()
screen:expect([[
^ |
{1:~ }|*8
|
]])
api.nvim_ui_send('Hello world')
screen:expect_unchanged()
-- The TUI client queries OSC 11 on connect, so that precedes the payload.
local bg_request = '\027]11;?\007'
eq(bg_request .. 'Hello world', table.concat(read_data))
@@ -159,16 +158,16 @@ describe('nvim_ui_send', function()
close_pipe(read_pipe)
end)
api.nvim_ui_send('Hello world')
poke_eventloop()
screen:expect([[
^ |
{1:~ }|*8
|
]])
api.nvim_ui_send('Hello world')
screen:expect_unchanged()
eq('', table.concat(read_data))
end)
end)