patch 8.2.0012: some undo functionality is not tested
Problem: Some undo functionality is not tested.
Solution: Add a few more test cases. (Dominique Pelle, closes #5364)
diff --git a/src/testdir/test_undo.vim b/src/testdir/test_undo.vim
index a76073e..e858d72 100644
--- a/src/testdir/test_undo.vim
+++ b/src/testdir/test_undo.vim
@@ -249,6 +249,26 @@
bwipe!
endfunc
+" undojoin not allowed after undo
+func Test_undojoin_after_undo()
+ new
+ call feedkeys("ixx\<Esc>u", 'xt')
+ call assert_fails(':undojoin', 'E790:')
+ bwipe!
+endfunc
+
+" undojoin is a noop when no change yet, or when 'undolevels' is negative
+func Test_undojoin_noop()
+ new
+ call feedkeys(":undojoin\<CR>", 'xt')
+ call assert_equal([''], getline(1, '$'))
+ setlocal undolevels=-1
+ call feedkeys("ixx\<Esc>u", 'xt')
+ call feedkeys(":undojoin\<CR>", 'xt')
+ call assert_equal(['xx'], getline(1, '$'))
+ bwipe!
+endfunc
+
func Test_undo_write()
call delete('Xtest')
split Xtest
@@ -335,7 +355,14 @@
call delete('Xundofile')
endfunc
-" Check that reading a truncted undo file doesn't hang.
+func Test_wundo_errors()
+ new
+ call setline(1, 'hello')
+ call assert_fails('wundo! Xdoesnotexist/Xundofile', 'E828:')
+ bwipe!
+endfunc
+
+" Check that reading a truncated undo file doesn't hang.
func Test_undofile_truncated()
new
call setline(1, 'hello')
@@ -353,6 +380,15 @@
call delete('Xundofile')
endfunc
+func Test_rundo_errors()
+ call assert_fails('rundo XfileDoesNotExist', 'E822:')
+
+ call writefile(['abc'], 'Xundofile')
+ call assert_fails('rundo Xundofile', 'E823:')
+
+ call delete('Xundofile')
+endfunc
+
" Test for undo working properly when executing commands from a register.
" Also test this in an empty buffer.
func Test_cmd_in_reg_undo()
@@ -422,6 +458,24 @@
bwipe!
endfunc
+" undo or redo are noop if there is nothing to undo or redo
+func Test_undo_redo_noop()
+ new
+ call assert_fails('undo 2', 'E830:')
+
+ message clear
+ undo
+ let messages = split(execute('message'), "\n")
+ call assert_equal('Already at oldest change', messages[-1])
+
+ message clear
+ redo
+ let messages = split(execute('message'), "\n")
+ call assert_equal('Already at newest change', messages[-1])
+
+ bwipe!
+endfunc
+
func Test_redo_empty_line()
new
exe "norm\x16r\x160"
diff --git a/src/version.c b/src/version.c
index c4c583a..27a42e0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 12,
+/**/
11,
/**/
10,