/
test_diffmode.vim
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test_diffmode.vim
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" Tests for diff mode
source shared.vim
source screendump.vim
source check.vim
func Test_diff_fold_sync()
enew!
let g:update_count = 0
au DiffUpdated * let g:update_count += 1
let l = range(50)
call setline(1, l)
diffthis
let winone = win_getid()
new
let l[25] = 'diff'
call setline(1, l)
diffthis
let wintwo = win_getid()
" line 15 is inside the closed fold
call assert_equal(19, foldclosedend(10))
call win_gotoid(winone)
call assert_equal(19, foldclosedend(10))
" open the fold
normal zv
call assert_equal(-1, foldclosedend(10))
" fold in other window must have opened too
call win_gotoid(wintwo)
call assert_equal(-1, foldclosedend(10))
" cursor position is in sync
normal 23G
call win_gotoid(winone)
call assert_equal(23, getcurpos()[1])
" depending on how redraw is done DiffUpdated may be triggered once or twice
call assert_inrange(1, 2, g:update_count)
au! DiffUpdated
windo diffoff
close!
set nomodified
endfunc
func Test_vert_split()
set diffopt=filler
call Common_vert_split()
set diffopt&
endfunc
func Test_vert_split_internal()
set diffopt=internal,filler
call Common_vert_split()
set diffopt&
endfunc
func Common_vert_split()
" Disable the title to avoid xterm keeping the wrong one.
set notitle noicon
new
let l = ['1 aa', '2 bb', '3 cc', '4 dd', '5 ee']
call setline(1, l)
w! Xtest
normal dd
$
put
normal kkrXoxxx
w! Xtest2
file Nop
normal ggoyyyjjjozzzz
set foldmethod=marker foldcolumn=4
call assert_equal(0, &diff)
call assert_equal('marker', &foldmethod)
call assert_equal(4, &foldcolumn)
call assert_equal(0, &scrollbind)
call assert_equal(0, &cursorbind)
call assert_equal(1, &wrap)
vert diffsplit Xtest
vert diffsplit Xtest2
call assert_equal(1, &diff)
call assert_equal('diff', &foldmethod)
call assert_equal(2, &foldcolumn)
call assert_equal(1, &scrollbind)
call assert_equal(1, &cursorbind)
call assert_equal(0, &wrap)
let diff_fdm = &fdm
let diff_fdc = &fdc
" repeat entering diff mode here to see if this saves the wrong settings
diffthis
" jump to second window for a moment to have filler line appear at start of
" first window
wincmd w
normal gg
wincmd p
normal gg
call assert_equal(2, winline())
normal j
call assert_equal(4, winline())
normal j
call assert_equal(5, winline())
normal j
call assert_equal(6, winline())
normal j
call assert_equal(8, winline())
normal j
call assert_equal(9, winline())
wincmd w
normal gg
call assert_equal(1, winline())
normal j
call assert_equal(2, winline())
normal j
call assert_equal(4, winline())
normal j
call assert_equal(5, winline())
normal j
call assert_equal(8, winline())
wincmd w
normal gg
call assert_equal(2, winline())
normal j
call assert_equal(3, winline())
normal j
call assert_equal(4, winline())
normal j
call assert_equal(5, winline())
normal j
call assert_equal(6, winline())
normal j
call assert_equal(7, winline())
normal j
call assert_equal(8, winline())
" Test diffoff
diffoff!
1wincmd 2
let &diff = 1
let &fdm = diff_fdm
let &fdc = diff_fdc
4wincmd w
diffoff!
1wincmd w
call assert_equal(0, &diff)
call assert_equal('marker', &foldmethod)
call assert_equal(4, &foldcolumn)
call assert_equal(0, &scrollbind)
call assert_equal(0, &cursorbind)
call assert_equal(1, &wrap)
wincmd w
call assert_equal(0, &diff)
call assert_equal('marker', &foldmethod)
call assert_equal(4, &foldcolumn)
call assert_equal(0, &scrollbind)
call assert_equal(0, &cursorbind)
call assert_equal(1, &wrap)
wincmd w
call assert_equal(0, &diff)
call assert_equal('marker', &foldmethod)
call assert_equal(4, &foldcolumn)
call assert_equal(0, &scrollbind)
call assert_equal(0, &cursorbind)
call assert_equal(1, &wrap)
call delete('Xtest')
call delete('Xtest2')
windo bw!
endfunc
func Test_filler_lines()
" Test that diffing shows correct filler lines
enew!
put =range(4,10)
1d _
vnew
put =range(1,10)
1d _
windo diffthis
wincmd h
call assert_equal(1, line('w0'))
unlet! diff_fdm diff_fdc
windo diffoff
bwipe!
enew!
endfunc
func Test_diffget_diffput()
enew!
let l = range(50)
call setline(1, l)
call assert_fails('diffget', 'E99:')
diffthis
call assert_fails('diffget', 'E100:')
new
let l[10] = 'one'
let l[20] = 'two'
let l[30] = 'three'
let l[40] = 'four'
call setline(1, l)
diffthis
call assert_equal('one', getline(11))
11diffget
call assert_equal('10', getline(11))
21diffput
wincmd w
call assert_equal('two', getline(21))
normal 31Gdo
call assert_equal('three', getline(31))
call assert_equal('40', getline(41))
normal 41Gdp
wincmd w
call assert_equal('40', getline(41))
new
diffthis
call assert_fails('diffget', 'E101:')
windo diffoff
%bwipe!
endfunc
" Test putting two changes from one buffer to another
func Test_diffput_two()
new a
let win_a = win_getid()
call setline(1, range(1, 10))
diffthis
new b
let win_b = win_getid()
call setline(1, range(1, 10))
8del
5del
diffthis
call win_gotoid(win_a)
%diffput
call win_gotoid(win_b)
call assert_equal(map(range(1, 10), 'string(v:val)'), getline(1, '$'))
bwipe! a
bwipe! b
endfunc
" Test for :diffget/:diffput with a range that is inside a diff chunk
func Test_diffget_diffput_range()
call setline(1, range(1, 10))
new
call setline(1, range(11, 20))
windo diffthis
3,5diffget
call assert_equal(['13', '14', '15'], getline(3, 5))
call setline(1, range(1, 10))
4,8diffput
wincmd p
call assert_equal(['13', '4', '5', '6', '7', '8', '19'], getline(3, 9))
%bw!
endfunc
" Test for :diffget/:diffput with an empty buffer and a non-empty buffer
func Test_diffget_diffput_empty_buffer()
%d _
new
call setline(1, 'one')
windo diffthis
diffget
call assert_equal(['one'], getline(1, '$'))
%d _
diffput
wincmd p
call assert_equal([''], getline(1, '$'))
%bw!
endfunc
" :diffput and :diffget completes names of buffers which
" are in diff mode and which are different than current buffer.
" No completion when the current window is not in diff mode.
func Test_diffget_diffput_completion()
e Xdiff1 | diffthis
botright new Xdiff2
botright new Xdiff3 | split | diffthis
botright new Xdiff4 | diffthis
wincmd t
call assert_equal('Xdiff1', bufname('%'))
call feedkeys(":diffput \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffput Xdiff3 Xdiff4', @:)
call feedkeys(":diffget \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffget Xdiff3 Xdiff4', @:)
call assert_equal(['Xdiff3', 'Xdiff4'], getcompletion('', 'diff_buffer'))
" Xdiff2 is not in diff mode, so no completion for :diffput, :diffget
wincmd j
call assert_equal('Xdiff2', bufname('%'))
call feedkeys(":diffput \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffput ', @:)
call feedkeys(":diffget \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffget ', @:)
call assert_equal([], getcompletion('', 'diff_buffer'))
" Xdiff3 is split in 2 windows, only the top one is in diff mode.
" So completion of :diffput :diffget only happens in the top window.
wincmd j
call assert_equal('Xdiff3', bufname('%'))
call assert_equal(1, &diff)
call feedkeys(":diffput \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffput Xdiff1 Xdiff4', @:)
call feedkeys(":diffget \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffget Xdiff1 Xdiff4', @:)
call assert_equal(['Xdiff1', 'Xdiff4'], getcompletion('', 'diff_buffer'))
wincmd j
call assert_equal('Xdiff3', bufname('%'))
call assert_equal(0, &diff)
call feedkeys(":diffput \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffput ', @:)
call feedkeys(":diffget \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffget ', @:)
call assert_equal([], getcompletion('', 'diff_buffer'))
wincmd j
call assert_equal('Xdiff4', bufname('%'))
call feedkeys(":diffput \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffput Xdiff1 Xdiff3', @:)
call feedkeys(":diffget \<C-A>\<C-B>\"\<CR>", 'tx')
call assert_equal('"diffget Xdiff1 Xdiff3', @:)
call assert_equal(['Xdiff1', 'Xdiff3'], getcompletion('', 'diff_buffer'))
%bwipe
endfunc
func Test_dp_do_buffer()
e! one
let bn1=bufnr('%')
let l = range(60)
call setline(1, l)
diffthis
new two
let l[10] = 'one'
let l[20] = 'two'
let l[30] = 'three'
let l[40] = 'four'
let l[50] = 'five'
call setline(1, l)
diffthis
" dp and do with invalid buffer number.
11
call assert_fails('norm 99999dp', 'E102:')
call assert_fails('norm 99999do', 'E102:')
call assert_fails('diffput non_existing_buffer', 'E94:')
call assert_fails('diffget non_existing_buffer', 'E94:')
" dp and do with valid buffer number.
call assert_equal('one', getline('.'))
exe 'norm ' . bn1 . 'do'
call assert_equal('10', getline('.'))
21
call assert_equal('two', getline('.'))
diffget one
call assert_equal('20', getline('.'))
31
exe 'norm ' . bn1 . 'dp'
41
diffput one
wincmd w
31
call assert_equal('three', getline('.'))
41
call assert_equal('four', getline('.'))
" dp and do with buffer number which is not in diff mode.
new not_in_diff_mode
let bn3=bufnr('%')
wincmd w
51
call assert_fails('exe "norm" . bn3 . "dp"', 'E103:')
call assert_fails('exe "norm" . bn3 . "do"', 'E103:')
call assert_fails('diffput not_in_diff_mode', 'E94:')
call assert_fails('diffget not_in_diff_mode', 'E94:')
windo diffoff
%bwipe!
endfunc
func Test_do_lastline()
e! one
call setline(1, ['1','2','3','4','5','6'])
diffthis
new two
call setline(1, ['2','4','5'])
diffthis
1
norm dp]c
norm dp]c
wincmd w
call assert_equal(4, line('$'))
norm G
norm do
call assert_equal(3, line('$'))
windo diffoff
%bwipe!
endfunc
func Test_diffoff()
enew!
call setline(1, ['Two', 'Three'])
redraw
let normattr = screenattr(1, 1)
diffthis
botright vert new
call setline(1, ['One', '', 'Two', 'Three'])
diffthis
redraw
call assert_notequal(normattr, 1->screenattr(1))
diffoff!
redraw
call assert_equal(normattr, screenattr(1, 1))
bwipe!
bwipe!
endfunc
func Common_icase_test()
edit one
call setline(1, ['One', 'Two', 'Three', 'Four', 'Fi#ve'])
redraw
let normattr = screenattr(1, 1)
diffthis
botright vert new two
call setline(1, ['one', 'TWO', 'Three ', 'Four', 'fI=VE'])
diffthis
redraw
call assert_equal(normattr, screenattr(1, 1))
call assert_equal(normattr, screenattr(2, 1))
call assert_notequal(normattr, screenattr(3, 1))
call assert_equal(normattr, screenattr(4, 1))
let dtextattr = screenattr(5, 3)
call assert_notequal(dtextattr, screenattr(5, 1))
call assert_notequal(dtextattr, screenattr(5, 5))
diffoff!
%bwipe!
endfunc
func Test_diffopt_icase()
set diffopt=icase,foldcolumn:0
call Common_icase_test()
set diffopt&
endfunc
func Test_diffopt_icase_internal()
set diffopt=icase,foldcolumn:0,internal
call Common_icase_test()
set diffopt&
endfunc
func Common_iwhite_test()
edit one
" Difference in trailing spaces and amount of spaces should be ignored,
" but not other space differences.
call setline(1, ["One \t", 'Two', 'Three', 'one two', 'one two', 'Four'])
redraw
let normattr = screenattr(1, 1)
diffthis
botright vert new two
call setline(1, ["One\t ", "Two\t ", 'Three', 'one two', 'onetwo', ' Four'])
diffthis
redraw
call assert_equal(normattr, screenattr(1, 1))
call assert_equal(normattr, screenattr(2, 1))
call assert_equal(normattr, screenattr(3, 1))
call assert_equal(normattr, screenattr(4, 1))
call assert_notequal(normattr, screenattr(5, 1))
call assert_notequal(normattr, screenattr(6, 1))
diffoff!
%bwipe!
endfunc
func Test_diffopt_iwhite()
set diffopt=iwhite,foldcolumn:0
call Common_iwhite_test()
set diffopt&
endfunc
func Test_diffopt_iwhite_internal()
set diffopt=internal,iwhite,foldcolumn:0
call Common_iwhite_test()
set diffopt&
endfunc
func Test_diffopt_context()
enew!
call setline(1, ['1', '2', '3', '4', '5', '6', '7'])
diffthis
new
call setline(1, ['1', '2', '3', '4', '5x', '6', '7'])
diffthis
set diffopt=context:2
call assert_equal('+-- 2 lines: 1', foldtextresult(1))
set diffopt=internal,context:2
call assert_equal('+-- 2 lines: 1', foldtextresult(1))
set diffopt=context:1
call assert_equal('+-- 3 lines: 1', foldtextresult(1))
set diffopt=internal,context:1
call assert_equal('+-- 3 lines: 1', foldtextresult(1))
diffoff!
%bwipe!
set diffopt&
endfunc
func Test_diffopt_horizontal()
set diffopt=internal,horizontal
diffsplit
call assert_equal(&columns, winwidth(1))
call assert_equal(&columns, winwidth(2))
call assert_equal(&lines, winheight(1) + winheight(2) + 3)
call assert_inrange(0, 1, winheight(1) - winheight(2))
set diffopt&
diffoff!
%bwipe
endfunc
func Test_diffopt_vertical()
set diffopt=internal,vertical
diffsplit
call assert_equal(&lines - 2, winheight(1))
call assert_equal(&lines - 2, winheight(2))
call assert_equal(&columns, winwidth(1) + winwidth(2) + 1)
call assert_inrange(0, 1, winwidth(1) - winwidth(2))
set diffopt&
diffoff!
%bwipe
endfunc
func Test_diffopt_hiddenoff()
set diffopt=internal,filler,foldcolumn:0,hiddenoff
e! one
call setline(1, ['Two', 'Three'])
redraw
let normattr = screenattr(1, 1)
diffthis
botright vert new two
call setline(1, ['One', 'Four'])
diffthis
redraw
call assert_notequal(normattr, screenattr(1, 1))
set hidden
close
redraw
" should not diffing with hidden buffer two while 'hiddenoff' is enabled
call assert_equal(normattr, screenattr(1, 1))
bwipe!
bwipe!
set hidden& diffopt&
endfunc
func Test_diffoff_hidden()
set diffopt=internal,filler,foldcolumn:0
e! one
call setline(1, ['Two', 'Three'])
redraw
let normattr = screenattr(1, 1)
diffthis
botright vert new two
call setline(1, ['One', 'Four'])
diffthis
redraw
call assert_notequal(normattr, screenattr(1, 1))
set hidden
close
redraw
" diffing with hidden buffer two
call assert_notequal(normattr, screenattr(1, 1))
diffoff
redraw
call assert_equal(normattr, screenattr(1, 1))
diffthis
redraw
" still diffing with hidden buffer two
call assert_notequal(normattr, screenattr(1, 1))
diffoff!
redraw
call assert_equal(normattr, screenattr(1, 1))
diffthis
redraw
" no longer diffing with hidden buffer two
call assert_equal(normattr, screenattr(1, 1))
bwipe!
bwipe!
set hidden& diffopt&
endfunc
func Test_setting_cursor()
new Xtest1
put =range(1,90)
wq
new Xtest2
put =range(1,100)
wq
tabe Xtest2
$
diffsp Xtest1
tabclose
call delete('Xtest1')
call delete('Xtest2')
endfunc
func Test_diff_move_to()
new
call setline(1, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
diffthis
vnew
call setline(1, [1, '2x', 3, 4, 4, 5, '6x', 7, '8x', 9, '10x'])
diffthis
norm ]c
call assert_equal(2, line('.'))
norm 3]c
call assert_equal(9, line('.'))
norm 10]c
call assert_equal(11, line('.'))
norm [c
call assert_equal(9, line('.'))
norm 2[c
call assert_equal(5, line('.'))
norm 10[c
call assert_equal(2, line('.'))
%bwipe!
endfunc
func Test_diffexpr()
CheckExecutable diff
func DiffExpr()
" Prepend some text to check diff type detection
call writefile(['warning', ' message'], v:fname_out)
silent exe '!diff ' . v:fname_in . ' ' . v:fname_new . '>>' . v:fname_out
endfunc
set diffexpr=DiffExpr()
set diffopt=foldcolumn:0
enew!
call setline(1, ['one', 'two', 'three'])
redraw
let normattr = screenattr(1, 1)
diffthis
botright vert new
call setline(1, ['one', 'two', 'three.'])
diffthis
redraw
call assert_equal(normattr, screenattr(1, 1))
call assert_equal(normattr, screenattr(2, 1))
call assert_notequal(normattr, screenattr(3, 1))
diffoff!
" Try using a non-existing function for 'diffexpr'.
set diffexpr=NewDiffFunc()
call assert_fails('windo diffthis', ['E117:', 'E97:'])
diffoff!
" Using a script-local function
func s:NewDiffExpr()
endfunc
set diffexpr=s:NewDiffExpr()
call assert_equal(expand('<SID>') .. 'NewDiffExpr()', &diffexpr)
set diffexpr=<SID>NewDiffExpr()
call assert_equal(expand('<SID>') .. 'NewDiffExpr()', &diffexpr)
%bwipe!
set diffexpr& diffopt&
delfunc DiffExpr
delfunc s:NewDiffExpr
endfunc
func Test_diffpatch()
" The patch program on MS-Windows may fail or hang.
CheckExecutable patch
CheckUnix
new
insert
***************
*** 1,3 ****
1
! 2
3
--- 1,4 ----
1
! 2x
3
+ 4
.
saveas! Xpatch
bwipe!
new
call assert_fails('diffpatch Xpatch', 'E816:')
for name in ['Xpatch', 'Xpatch$HOME', 'Xpa''tch']
call setline(1, ['1', '2', '3'])
if name != 'Xpatch'
call rename('Xpatch', name)
endif
exe 'diffpatch ' . escape(name, '$')
call assert_equal(['1', '2x', '3', '4'], getline(1, '$'))
if name != 'Xpatch'
call rename(name, 'Xpatch')
endif
bwipe!
endfor
call delete('Xpatch')
bwipe!
endfunc
func Test_diff_too_many_buffers()
for i in range(1, 8)
exe "new Xtest" . i
diffthis
endfor
new Xtest9
call assert_fails('diffthis', 'E96:')
%bwipe!
endfunc
func Test_diff_nomodifiable()
new
call setline(1, [1, 2, 3, 4])
setl nomodifiable
diffthis
vnew
call setline(1, ['1x', 2, 3, 3, 4])
diffthis
call assert_fails('norm dp', 'E793:')
setl nomodifiable
call assert_fails('norm do', 'E21:')
%bwipe!
endfunc
func Test_diff_hlID()
new
call setline(1, [1, 2, 3])
diffthis
vnew
call setline(1, ['1x', 2, 'x', 3])
diffthis
redraw
call diff_hlID(-1, 1)->synIDattr("name")->assert_equal("")
call diff_hlID(1, 1)->synIDattr("name")->assert_equal("DiffChange")
call diff_hlID(1, 2)->synIDattr("name")->assert_equal("DiffText")
call diff_hlID(2, 1)->synIDattr("name")->assert_equal("")
call diff_hlID(3, 1)->synIDattr("name")->assert_equal("DiffAdd")
eval 4->diff_hlID(1)->synIDattr("name")->assert_equal("")
wincmd w
call assert_equal(synIDattr(diff_hlID(1, 1), "name"), "DiffChange")
call assert_equal(synIDattr(diff_hlID(2, 1), "name"), "")
call assert_equal(synIDattr(diff_hlID(3, 1), "name"), "")
%bwipe!
endfunc
func Test_diff_filler()
new
call setline(1, [1, 2, 3, 'x', 4])
diffthis
vnew
call setline(1, [1, 2, 'y', 'y', 3, 4])
diffthis
redraw
call assert_equal([0, 0, 0, 0, 0, 0, 0, 1, 0], map(range(-1, 7), 'v:val->diff_filler()'))
wincmd w
call assert_equal([0, 0, 0, 0, 2, 0, 0, 0], map(range(-1, 6), 'diff_filler(v:val)'))
%bwipe!
endfunc
func Test_diff_lastline()
enew!
only!
call setline(1, ['This is a ', 'line with five ', 'rows'])
diffthis
botright vert new
call setline(1, ['This is', 'a line with ', 'four rows'])
diffthis
1
call feedkeys("Je a\<CR>", 'tx')
call feedkeys("Je a\<CR>", 'tx')
let w1lines = winline()
wincmd w
$
let w2lines = winline()
call assert_equal(w2lines, w1lines)
bwipe!
bwipe!
endfunc
func WriteDiffFiles(buf, list1, list2)
call writefile(a:list1, 'Xfile1')
call writefile(a:list2, 'Xfile2')
if a:buf
call term_sendkeys(a:buf, ":checktime\<CR>")
endif
endfunc
" Verify a screendump with both the internal and external diff.
func VerifyBoth(buf, dumpfile, extra)
" trailing : for leaving the cursor on the command line
for cmd in [":set diffopt=filler" . a:extra . "\<CR>:", ":set diffopt+=internal\<CR>:"]
call term_sendkeys(a:buf, cmd)
if VerifyScreenDump(a:buf, a:dumpfile, {}, cmd =~ 'internal' ? 'internal' : 'external')
" don't let the next iteration overwrite the "failed" file.
return
endif
endfor
" also test unified diff
call term_sendkeys(a:buf, ":call SetupUnified()\<CR>:")
call term_sendkeys(a:buf, ":redraw!\<CR>:")
call VerifyScreenDump(a:buf, a:dumpfile, {}, 'unified')
call term_sendkeys(a:buf, ":call StopUnified()\<CR>:")
endfunc
" Verify a screendump with the internal diff only.
func VerifyInternal(buf, dumpfile, extra)
call term_sendkeys(a:buf, ":diffupdate!\<CR>")
" trailing : for leaving the cursor on the command line
call term_sendkeys(a:buf, ":set diffopt=internal,filler" . a:extra . "\<CR>:")
call VerifyScreenDump(a:buf, a:dumpfile, {})
endfunc
func Test_diff_screen()
let g:test_is_flaky = 1
CheckScreendump
CheckFeature menu
let lines =<< trim END
func UnifiedDiffExpr()
" Prepend some text to check diff type detection
call writefile(['warning', ' message'], v:fname_out)
silent exe '!diff -U0 ' .. v:fname_in .. ' ' .. v:fname_new .. '>>' .. v:fname_out
endfunc
func SetupUnified()
set diffexpr=UnifiedDiffExpr()
diffupdate
endfunc
func StopUnified()
set diffexpr=
endfunc
END
call writefile(lines, 'XdiffSetup')
" clean up already existing swap files, just in case
call delete('.Xfile1.swp')
call delete('.Xfile2.swp')
" Test 1: Add a line in beginning of file 2
call WriteDiffFiles(0, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
let buf = RunVimInTerminal('-d -S XdiffSetup Xfile1 Xfile2', {})
" Set autoread mode, so that Vim won't complain once we re-write the test
" files
call term_sendkeys(buf, ":set autoread\<CR>\<c-w>w:set autoread\<CR>\<c-w>w")
call VerifyBoth(buf, 'Test_diff_01', '')
" Test 2: Add a line in beginning of file 1
call WriteDiffFiles(buf, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
call VerifyBoth(buf, 'Test_diff_02', '')
" Test 3: Add a line at the end of file 2
call WriteDiffFiles(buf, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])
call VerifyBoth(buf, 'Test_diff_03', '')
" Test 4: Add a line at the end of file 1
call WriteDiffFiles(buf, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
call VerifyBoth(buf, 'Test_diff_04', '')
" Test 5: Add a line in the middle of file 2, remove on at the end of file 1
call WriteDiffFiles(buf, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], [1, 2, 3, 4, 4, 5, 6, 7, 8, 9, 10])
call VerifyBoth(buf, 'Test_diff_05', '')
" Test 6: Add a line in the middle of file 1, remove on at the end of file 2
call WriteDiffFiles(buf, [1, 2, 3, 4, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])
call VerifyBoth(buf, 'Test_diff_06', '')
" Variants on test 6 with different context settings
call term_sendkeys(buf, ":set diffopt+=context:2\<cr>")
call VerifyScreenDump(buf, 'Test_diff_06.2', {})
call term_sendkeys(buf, ":set diffopt-=context:2\<cr>")
call term_sendkeys(buf, ":set diffopt+=context:1\<cr>")
call VerifyScreenDump(buf, 'Test_diff_06.1', {})
call term_sendkeys(buf, ":set diffopt-=context:1\<cr>")
call term_sendkeys(buf, ":set diffopt+=context:0\<cr>")
call VerifyScreenDump(buf, 'Test_diff_06.0', {})
call term_sendkeys(buf, ":set diffopt-=context:0\<cr>")
" Test 7 - 9: Test normal/patience/histogram diff algorithm
call WriteDiffFiles(buf, ['#include <stdio.h>', '', '// Frobs foo heartily', 'int frobnitz(int foo)', '{',
\ ' int i;', ' for(i = 0; i < 10; i++)', ' {', ' printf("Your answer is: ");',
\ ' printf("%d\n", foo);', ' }', '}', '', 'int fact(int n)', '{', ' if(n > 1)', ' {',
\ ' return fact(n-1) * n;', ' }', ' return 1;', '}', '', 'int main(int argc, char **argv)',
\ '{', ' frobnitz(fact(10));', '}'],
\ ['#include <stdio.h>', '', 'int fib(int n)', '{', ' if(n > 2)', ' {',
\ ' return fib(n-1) + fib(n-2);', ' }', ' return 1;', '}', '', '// Frobs foo heartily',
\ 'int frobnitz(int foo)', '{', ' int i;', ' for(i = 0; i < 10; i++)', ' {',
\ ' printf("%d\n", foo);', ' }', '}', '',
\ 'int main(int argc, char **argv)', '{', ' frobnitz(fib(10));', '}'])
call term_sendkeys(buf, ":diffupdate!\<cr>")
call term_sendkeys(buf, ":set diffopt+=internal\<cr>")
call VerifyScreenDump(buf, 'Test_diff_07', {})
call term_sendkeys(buf, ":set diffopt+=algorithm:patience\<cr>")
call VerifyScreenDump(buf, 'Test_diff_08', {})
call term_sendkeys(buf, ":set diffopt+=algorithm:histogram\<cr>")
call VerifyScreenDump(buf, 'Test_diff_09', {})
" Test 10-11: normal/indent-heuristic
call term_sendkeys(buf, ":set diffopt&vim\<cr>")
call WriteDiffFiles(buf, ['', ' def finalize(values)', '', ' values.each do |v|', ' v.finalize', ' end'],
\ ['', ' def finalize(values)', '', ' values.each do |v|', ' v.prepare', ' end', '',
\ ' values.each do |v|', ' v.finalize', ' end'])
call term_sendkeys(buf, ":diffupdate!\<cr>")
call term_sendkeys(buf, ":set diffopt+=internal\<cr>")
call VerifyScreenDump(buf, 'Test_diff_10', {})
" Leave trailing : at commandline!
call term_sendkeys(buf, ":set diffopt+=indent-heuristic\<cr>:\<cr>")
call VerifyScreenDump(buf, 'Test_diff_11', {}, 'one')
" shouldn't matter, if indent-algorithm comes before or after the algorithm
call term_sendkeys(buf, ":set diffopt&\<cr>")
call term_sendkeys(buf, ":set diffopt+=indent-heuristic,algorithm:patience\<cr>:\<cr>")
call VerifyScreenDump(buf, 'Test_diff_11', {}, 'two')
call term_sendkeys(buf, ":set diffopt&\<cr>")
call term_sendkeys(buf, ":set diffopt+=algorithm:patience,indent-heuristic\<cr>:\<cr>")
call VerifyScreenDump(buf, 'Test_diff_11', {}, 'three')
" Test 12: diff the same file
call WriteDiffFiles(buf, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
call VerifyBoth(buf, 'Test_diff_12', '')
" Test 13: diff an empty file
call WriteDiffFiles(buf, [], [])
call VerifyBoth(buf, 'Test_diff_13', '')
" Test 14: test diffopt+=icase
call WriteDiffFiles(buf, ['a', 'b', 'cd'], ['A', 'b', 'cDe'])
call VerifyBoth(buf, 'Test_diff_14', " diffopt+=filler diffopt+=icase")
" Test 15-16: test diffopt+=iwhite
call WriteDiffFiles(buf, ['int main()', '{', ' printf("Hello, World!");', ' return 0;', '}'],
\ ['int main()', '{', ' if (0)', ' {', ' printf("Hello, World!");', ' return 0;', ' }', '}'])
call term_sendkeys(buf, ":diffupdate!\<cr>")
call term_sendkeys(buf, ":set diffopt&vim diffopt+=filler diffopt+=iwhite\<cr>")
call VerifyScreenDump(buf, 'Test_diff_15', {})
call term_sendkeys(buf, ":set diffopt+=internal\<cr>")
call VerifyScreenDump(buf, 'Test_diff_16', {})
" Test 17: test diffopt+=iblank
call WriteDiffFiles(buf, ['a', ' ', 'cd', 'ef', 'xxx'], ['a', 'cd', '', 'ef', 'yyy'])
call VerifyInternal(buf, 'Test_diff_17', " diffopt+=iblank")
" Test 18: test diffopt+=iblank,iwhite / iwhiteall / iwhiteeol
call VerifyInternal(buf, 'Test_diff_18', " diffopt+=iblank,iwhite")
call VerifyInternal(buf, 'Test_diff_18', " diffopt+=iblank,iwhiteall")
call VerifyInternal(buf, 'Test_diff_18', " diffopt+=iblank,iwhiteeol")
" Test 19: test diffopt+=iwhiteeol
call WriteDiffFiles(buf, ['a ', 'x', 'cd', 'ef', 'xx xx', 'foo', 'bar'], ['a', 'x', 'c d', ' ef', 'xx xx', 'foo', '', 'bar'])
call VerifyInternal(buf, 'Test_diff_19', " diffopt+=iwhiteeol")
" Test 19: test diffopt+=iwhiteall
call VerifyInternal(buf, 'Test_diff_20', " diffopt+=iwhiteall")