patch 9.1.1393: missing test for switching buffers and reusing curbuf
Problem: The check in buf_freeall that restores curwin subtly prevents
leaving an unloaded buffer in a window when reusing curbuf, if
autocommands switch to a different buffer.
Solution: Add a test case that covers this. Also ensure splitting isn't
possible, as that could do the same (Sean Dewar)
closes: #17325
Signed-off-by: Sean Dewar <6256228+seandewar@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 26f7145..1988807 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -5415,4 +5415,31 @@
%bw!
endfunc
+func Test_reuse_curbuf_switch()
+ edit asdf
+ let s:asdf_win = win_getid()
+ new
+ let other_buf = bufnr()
+ let other_win = win_getid()
+ augroup testing
+ autocmd!
+ autocmd BufUnload * ++once let s:triggered = 1
+ \| call assert_fails('split', 'E1159:')
+ \| call win_gotoid(s:asdf_win)
+ augroup END
+
+ " Check BufUnload changing curbuf does not cause buflist_new to create a new
+ " buffer while leaving "other_buf" unloaded in a window.
+ enew
+ call assert_equal(1, s:triggered)
+ call assert_equal(other_buf, bufnr())
+ call assert_equal(other_win, win_getid())
+ call assert_equal(1, win_findbuf(other_buf)->len())
+ call assert_equal(1, bufloaded(other_buf))
+
+ unlet! s:asdf_win s:triggered
+ call CleanUpTestAuGroup()
+ %bw!
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab