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vim-patch:8.2.0012: some undo functionality is not tested

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Problem:    Some undo functionality is not tested.
Solution:   Add a few more test cases. (Dominique Pelle, closes vim/vim#5364)
559b9c68fe
This commit is contained in:
Jan Edmund Lazo 2019-12-15 17:34:54 -05:00
parent ad5049aa60
commit fcd9105018
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GPG Key ID: 64915E6E9F735B15
1 changed files with 54 additions and 0 deletions
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54
src/nvim/testdir/test_undo.vim
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@ -241,6 +241,26 @@ func Test_undojoin()
close!
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
@ -327,6 +347,22 @@ func Test_undofile_earlier()
call delete('Xundofile')
endfunc
func Test_wundo_errors()
new
call setline(1, 'hello')
call assert_fails('wundo! Xdoesnotexist/Xundofile', 'E828:')
bwipe!
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()
@ -343,6 +379,24 @@ func Test_cmd_in_reg_undo()
let @a = ''
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"