Commit: tests: Test_xrestore() is flaky and cannot recover

tests: Test_xrestore() is flaky and cannot recover

Commit: https://github.com/vim/vim/commit/0912ec20b8e847f0d96be65e7689989edc056b15
Author: h-east <[email protected]>
Date:   Mon Aug 17 04:29:58 2026 +0900

    tests: Test_xrestore() is flaky and cannot recover
    
    Problem:  Test_xrestore() fails on CI and the retry fails as well, because
              the retry runs in the same Vim and the connection to the X server
              was not restored.
    Solution: Restore the display in a "finally" block.  Wait for the selection
              to become available instead of failing with E353.
    
    Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

diff --git a/src/testdir/test_paste.vim b/src/testdir/test_paste.vim
index bd87e3be7..0daa5fe58 100644
--- a/src/testdir/test_paste.vim
+++ b/src/testdir/test_paste.vim
@@ -176,6 +176,9 @@ endfunc
 func CheckCopyPaste()
   call setline(1, ['copy this', ''])
   normal 1G0"*y$
+  " The selection may not be available right away after connecting to the X
+  " server, the put below would then throw E353.
+  call WaitForAssert({-> assert_equal('copy this', getreg('*'))})
   normal j"*p
   call assert_equal('copy this', getline(2))
 endfunc
@@ -186,15 +189,20 @@ func Test_xrestore()
 
   let display = $DISPLAY
   new
-  call CheckCopyPaste()
-
-  xrestore
-  call CheckCopyPaste()
-
-  exe "xrestore " .. display
-  call CheckCopyPaste()
-
-  bwipe!
+  " Restore the display even when a check fails, otherwise the retry runs
+  " without a connection to the X server.
+  try
+    call CheckCopyPaste()
+
+    xrestore
+    call CheckCopyPaste()
+
+    exe "xrestore " .. display
+    call CheckCopyPaste()
+  finally
+    exe "xrestore " .. display
+    bwipe!
+  endtry
 endfunc
 
 " Test for 'pastetoggle'

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