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Diffstat (limited to '')
| -rw-r--r-- | src/testdir/test_recover.vim | 451 |
1 files changed, 451 insertions, 0 deletions
diff --git a/src/testdir/test_recover.vim b/src/testdir/test_recover.vim new file mode 100644 index 0000000..395eb06 --- /dev/null +++ b/src/testdir/test_recover.vim @@ -0,0 +1,451 @@ +" Test :recover + +source check.vim + +func Test_recover_root_dir() + " This used to access invalid memory. + split Xtest + set dir=/ + call assert_fails('recover', 'E305:') + close! + + if has('win32') || filewritable('/') == 2 + " can write in / directory on MS-Windows + set dir=/notexist/ + endif + call assert_fails('split Xtest', 'E303:') + + " No error with empty 'directory' setting. + set directory= + split XtestOK + close! + + set dir& +endfunc + +" Make a copy of the current swap file to "Xswap". +" Return the name of the swap file. +func CopySwapfile() + preserve + " get the name of the swap file + let swname = split(execute("swapname"))[0] + let swname = substitute(swname, '[[:blank:][:cntrl:]]*\(.\{-}\)[[:blank:][:cntrl:]]*$', '\1', '') + " make a copy of the swap file in Xswap + set binary + exe 'sp ' . swname + w! Xswap + set nobinary + return swname +endfunc + +" Inserts 10000 lines with text to fill the swap file with two levels of pointer +" blocks. Then recovers from the swap file and checks all text is restored. +" +" We need about 10000 lines of 100 characters to get two levels of pointer +" blocks. +func Test_swap_file() + set fileformat=unix undolevels=-1 + edit! Xtest + let text = "\tabcdefghijklmnoparstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnoparstuvwxyz0123456789" + let i = 1 + let linecount = 10000 + while i <= linecount + call append(i - 1, i . text) + let i += 1 + endwhile + $delete + + let swname = CopySwapfile() + + new + only! + bwipe! Xtest + call rename('Xswap', swname) + recover Xtest + call delete(swname) + let linedollar = line('$') + call assert_equal(linecount, linedollar) + if linedollar < linecount + let linecount = linedollar + endif + let i = 1 + while i <= linecount + call assert_equal(i . text, getline(i)) + let i += 1 + endwhile + + set undolevels& + enew! | only +endfunc + +func Test_nocatch_process_still_running() + " sysinfo.uptime probably only works on Linux + if !has('linux') + let g:skipped_reason = 'only works on Linux' + return + endif + " the GUI dialog can't be handled + if has('gui_running') + let g:skipped_reason = 'only works in the terminal' + return + endif + + " don't intercept existing swap file here + au! SwapExists + + " Edit a file and grab its swapfile. + edit Xswaptest + call setline(1, ['a', 'b', 'c']) + let swname = CopySwapfile() + + " Forget we edited this file + new + only! + bwipe! Xswaptest + + call rename('Xswap', swname) + call feedkeys('e', 'tL') + redir => editOutput + edit Xswaptest + redir END + call assert_match('E325: ATTENTION', editOutput) + call assert_match('file name: .*Xswaptest', editOutput) + call assert_match('process ID: \d* (STILL RUNNING)', editOutput) + + " Forget we edited this file + new + only! + bwipe! Xswaptest + + " pretend we rebooted + call test_override("uptime", 0) + sleep 1 + + call feedkeys('e', 'tL') + redir => editOutput + edit Xswaptest + redir END + call assert_match('E325: ATTENTION', editOutput) + call assert_notmatch('(STILL RUNNING)', editOutput) + + call test_override("ALL", 0) + call delete(swname) +endfunc + +" Test for :recover with multiple swap files +func Test_recover_multiple_swap_files() + CheckUnix + new Xfile1 + call setline(1, ['a', 'b', 'c']) + preserve + let b = readblob(swapname('')) + call writefile(b, '.Xfile1.swm', 'D') + call writefile(b, '.Xfile1.swn', 'D') + call writefile(b, '.Xfile1.swo', 'D') + %bw! + call feedkeys(":recover Xfile1\<CR>3\<CR>q", 'xt') + call assert_equal(['a', 'b', 'c'], getline(1, '$')) + " try using out-of-range number to select a swap file + bw! + call feedkeys(":recover Xfile1\<CR>4\<CR>q", 'xt') + call assert_equal('Xfile1', @%) + call assert_equal([''], getline(1, '$')) + bw! + call feedkeys(":recover Xfile1\<CR>0\<CR>q", 'xt') + call assert_equal('Xfile1', @%) + call assert_equal([''], getline(1, '$')) + bw! +endfunc + +" Test for :recover using an empty swap file +func Test_recover_empty_swap_file() + CheckUnix + call writefile([], '.Xfile1.swp', 'D') + let msg = execute('recover Xfile1') + call assert_match('Unable to read block 0 from .Xfile1.swp', msg) + call assert_equal('Xfile1', @%) + bw! + + " make sure there are no old swap files laying around + for f in glob('.sw?', 0, 1) + call delete(f) + endfor + + " :recover from an empty buffer + call assert_fails('recover', 'E305:') +endfunc + +" Test for :recover using a corrupted swap file +" Refer to the comments in the memline.c file for the swap file headers +" definition. +func Test_recover_corrupted_swap_file() + CheckUnix + + " recover using a partial swap file + call writefile(0z1234, '.Xfile1.swp') + call assert_fails('recover Xfile1', 'E295:') + bw! + + " recover using invalid content in the swap file + call writefile([repeat('1', 2*1024)], '.Xfile1.swp') + call assert_fails('recover Xfile1', 'E307:') + call delete('.Xfile1.swp') + + " :recover using a swap file with a corrupted header + edit Xfile1 + preserve + let sn = swapname('') + let b = readblob(sn) + let save_b = copy(b) + bw! + + " Not all fields are written in a system-independent manner. Detect whether + " the test is running on a little or big-endian system, so the correct + " corruption values can be set. + " The B0_MAGIC_LONG field may be 32-bit or 64-bit, depending on the system, + " even though the value stored is only 32-bits. Therefore, need to check + " both the high and low 32-bits to compute these values. + let little_endian = (b[1008:1011] == 0z33323130) || (b[1012:1015] == 0z33323130) + let system_64bit = little_endian ? (b[1012:1015] == 0z00000000) : (b[1008:1011] == 0z00000000) + + " clear the B0_MAGIC_LONG field + if system_64bit + let b[1008:1015] = 0z00000000.00000000 + else + let b[1008:1011] = 0z00000000 + endif + call writefile(b, sn) + let msg = execute('recover Xfile1') + call assert_match('the file has been damaged', msg) + call assert_equal('Xfile1', @%) + call assert_equal([''], getline(1, '$')) + bw! + + " reduce the page size + let b = copy(save_b) + let b[12:15] = 0z00010000 + call writefile(b, sn) + let msg = execute('recover Xfile1') + call assert_match('page size is smaller than minimum value', msg) + call assert_equal('Xfile1', @%) + call assert_equal([''], getline(1, '$')) + bw! + + " clear the pointer ID + let b = copy(save_b) + let b[4096:4097] = 0z0000 + call writefile(b, sn) + call assert_fails('recover Xfile1', 'E310:') + call assert_equal('Xfile1', @%) + call assert_equal([''], getline(1, '$')) + bw! + + " set the number of pointers in a pointer block to zero + let b = copy(save_b) + let b[4098:4099] = 0z0000 + call writefile(b, sn) + call assert_fails('recover Xfile1', 'E312:') + call assert_equal('Xfile1', @%) + call assert_equal(['???EMPTY BLOCK'], getline(1, '$')) + bw! + + " set the block number in a pointer entry to a negative number + let b = copy(save_b) + if system_64bit + let b[4104:4111] = little_endian ? 0z00000000.00000080 : 0z80000000.00000000 + else + let b[4104:4107] = little_endian ? 0z00000080 : 0z80000000 + endif + call writefile(b, sn) + call assert_fails('recover Xfile1', 'E312:') + call assert_equal('Xfile1', @%) + call assert_equal(['???LINES MISSING'], getline(1, '$')) + bw! + + " clear the data block ID + let b = copy(save_b) + let b[8192:8193] = 0z0000 + call writefile(b, sn) + call assert_fails('recover Xfile1', 'E312:') + call assert_equal('Xfile1', @%) + call assert_equal(['???BLOCK MISSING'], getline(1, '$')) + bw! + + " set the number of lines in the data block to zero + let b = copy(save_b) + if system_64bit + let b[8208:8215] = 0z00000000.00000000 + else + let b[8208:8211] = 0z00000000 + endif + call writefile(b, sn) + call assert_fails('recover Xfile1', 'E312:') + call assert_equal('Xfile1', @%) + call assert_equal(['??? from here until ???END lines may have been inserted/deleted', + \ '???END'], getline(1, '$')) + bw! + + " use an invalid text start for the lines in a data block + let b = copy(save_b) + if system_64bit + let b[8216:8219] = 0z00000000 + else + let b[8212:8215] = 0z00000000 + endif + call writefile(b, sn) + call assert_fails('recover Xfile1', 'E312:') + call assert_equal('Xfile1', @%) + call assert_equal(['???'], getline(1, '$')) + bw! + + " use an incorrect text end (db_txt_end) for the data block + let b = copy(save_b) + let b[8204:8207] = little_endian ? 0z80000000 : 0z00000080 + call writefile(b, sn) + call assert_fails('recover Xfile1', 'E312:') + call assert_equal('Xfile1', @%) + call assert_equal(['??? from here until ???END lines may be messed up', '', + \ '???END'], getline(1, '$')) + bw! + + " remove the data block + let b = copy(save_b) + call writefile(b[:8191], sn) + call assert_fails('recover Xfile1', 'E312:') + call assert_equal('Xfile1', @%) + call assert_equal(['???MANY LINES MISSING'], getline(1, '$')) + + bw! + call delete(sn) +endfunc + +" Test for :recover using an encrypted swap file +func Test_recover_encrypted_swap_file() + CheckFeature cryptv + CheckUnix + + " Recover an encrypted file from the swap file without the original file + new Xfile1 + call feedkeys(":X\<CR>vim\<CR>vim\<CR>", 'xt') + call setline(1, ['aaa', 'bbb', 'ccc']) + preserve + let b = readblob('.Xfile1.swp') + call writefile(b, '.Xfile1.swm') + bw! + call feedkeys(":recover Xfile1\<CR>vim\<CR>\<CR>", 'xt') + call assert_equal(['aaa', 'bbb', 'ccc'], getline(1, '$')) + bw! + call delete('.Xfile1.swm') + + " Recover an encrypted file from the swap file with the original file + new Xfile1 + call feedkeys(":X\<CR>vim\<CR>vim\<CR>", 'xt') + call setline(1, ['aaa', 'bbb', 'ccc']) + update + call setline(1, ['111', '222', '333']) + preserve + let b = readblob('.Xfile1.swp') + call writefile(b, '.Xfile1.swm') + bw! + call feedkeys(":recover Xfile1\<CR>vim\<CR>\<CR>", 'xt') + call assert_equal(['111', '222', '333'], getline(1, '$')) + call assert_true(&modified) + bw! + call delete('.Xfile1.swm') + call delete('Xfile1') +endfunc + +" Test for :recover using a unreadable swap file +func Test_recover_unreadable_swap_file() + CheckUnix + CheckNotRoot + new Xfile1 + let b = readblob('.Xfile1.swp') + call writefile(b, '.Xfile1.swm', 'D') + bw! + call setfperm('.Xfile1.swm', '-w-------') + call assert_fails('recover Xfile1', 'E306:') +endfunc + +" Test for using :recover when the original file and the swap file have the +" same contents. +func Test_recover_unmodified_file() + CheckUnix + call writefile(['aaa', 'bbb', 'ccc'], 'Xfile1') + edit Xfile1 + preserve + let b = readblob('.Xfile1.swp') + %bw! + call writefile(b, '.Xfile1.swz', 'D') + let msg = execute('recover Xfile1') + call assert_equal(['aaa', 'bbb', 'ccc'], getline(1, '$')) + call assert_false(&modified) + call assert_match('Buffer contents equals file contents', msg) + bw! + call delete('Xfile1') +endfunc + +" Test for recovering a file when editing a symbolically linked file +func Test_recover_symbolic_link() + CheckUnix + call writefile(['aaa', 'bbb', 'ccc'], 'Xfile1', 'D') + silent !ln -s Xfile1 Xfile2 + edit Xfile2 + call assert_equal('.Xfile1.swp', fnamemodify(swapname(''), ':t')) + preserve + let b = readblob('.Xfile1.swp') + %bw! + call writefile([], 'Xfile1') + call writefile(b, '.Xfile1.swp') + silent! recover Xfile2 + call assert_equal(['aaa', 'bbb', 'ccc'], getline(1, '$')) + call assert_true(&modified) + update + %bw! + call assert_equal(['aaa', 'bbb', 'ccc'], readfile('Xfile1')) + call delete('Xfile2') + call delete('.Xfile1.swp') +endfunc + +" Test for recovering a file when an autocmd moves the cursor to an invalid +" line. This used to result in an internal error (E315) which is fixed +" by 8.2.2966. +func Test_recover_invalid_cursor_pos() + call writefile([], 'Xfile1', 'D') + edit Xfile1 + preserve + let b = readblob('.Xfile1.swp') + bw! + augroup Test + au! + au BufReadPost Xfile1 normal! 3G + augroup END + call writefile(range(1, 3), 'Xfile1') + call writefile(b, '.Xfile1.swp', 'D') + try + recover Xfile1 + catch /E308:/ + " this test is for the :E315 internal error. + " ignore the 'E308: Original file may have been changed' error + endtry + redraw! + augroup Test + au! + augroup END + augroup! Test +endfunc + +" Test for recovering a buffer without a name +func Test_noname_buffer() + new + call setline(1, ['one', 'two']) + preserve + let sn = swapname('') + let b = readblob(sn) + bw! + call writefile(b, sn, 'D') + exe "recover " .. sn + call assert_equal(['one', 'two'], getline(1, '$')) +endfunc + +" vim: shiftwidth=2 sts=2 expandtab |