From 381f8f86da4bf5b24fb993eac281dffd2a2bcd1e Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Sun, 10 Apr 2022 18:45:11 +0800
Subject: vim-patch:8.2.4728: no test that v:event cannot be modified

Problem:    No test that v:event cannot be modified.
Solution:   Add a test. (closes vim/vim#10139)
https://github.com/vim/vim/commit/021996ffaa933d9dc0c3553ca01de93fbf3d522b
---
 src/nvim/testdir/test_autocmd.vim | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src')

diff --git a/src/nvim/testdir/test_autocmd.vim b/src/nvim/testdir/test_autocmd.vim
index c1a120efa4..e3362cd28f 100644
--- a/src/nvim/testdir/test_autocmd.vim
+++ b/src/nvim/testdir/test_autocmd.vim
@@ -2661,5 +2661,23 @@ func Test_bufwipeout_changes_window()
   %bwipe!
 endfunc
 
+func Test_v_event_readonly()
+  autocmd CompleteChanged * let v:event.width = 0
+  call assert_fails("normal! i\<C-X>\<C-V>", 'E46:')
+  au! CompleteChanged
+
+  autocmd DirChangedPre * let v:event.directory = ''
+  call assert_fails('cd .', 'E46:')
+  au! DirChangedPre
+
+  autocmd ModeChanged * let v:event.new_mode = ''
+  call assert_fails('normal! cc', 'E46:')
+  au! ModeChanged
+
+  autocmd TextYankPost * let v:event.operator = ''
+  call assert_fails('normal! yy', 'E46:')
+  au! TextYankPost
+endfunc
+
 
 " vim: shiftwidth=2 sts=2 expandtab
-- 
cgit