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" Functions shared by tests making screen dumps.
" Only load this script once.
if exists('*VerifyScreenDump')
finish
endif
source shared.vim
source term_util.vim
" Skip the rest if there is no terminal feature at all.
if !has('terminal')
finish
endif
" Verify that Vim running in terminal buffer "buf" matches the screen dump.
" "options" is passed to term_dumpwrite().
" The file name used is "dumps/{filename}.dump".
" Optionally an extra argument can be passed which is prepended to the error
" message. Use this when using the same dump file with different options.
" Will wait for up to a second for the screen dump to match.
" Returns non-zero when verification fails.
func VerifyScreenDump(buf, filename, options, ...)
let reference = 'dumps/' . a:filename . '.dump'
let testfile = 'failed/' . a:filename . '.dump'
" Starting a terminal to make a screendump is always considered flaky.
let g:test_is_flaky = 1
" Redraw to execute the code that updates the screen. Otherwise we get the
" text and attributes only from the internal buffer.
redraw
let did_mkdir = 0
if !isdirectory('failed')
let did_mkdir = 1
call mkdir('failed')
endif
let i = 0
while 1
" leave some time for updating the original window
sleep 10m
call delete(testfile)
call term_dumpwrite(a:buf, testfile, a:options)
let testdump = readfile(testfile)
if filereadable(reference)
let refdump = readfile(reference)
else
" Must be a new screendump, always fail
let refdump = []
endif
if refdump == testdump
call delete(testfile)
if did_mkdir
call delete('failed', 'd')
endif
break
endif
if i == 100
" Leave the failed dump around for inspection.
if filereadable(reference)
let msg = 'See dump file difference: call term_dumpdiff("testdir/' .. testfile .. '", "testdir/' .. reference .. '")'
if a:0 == 1
let msg = a:1 . ': ' . msg
endif
if len(testdump) != len(refdump)
let msg = msg . '; line count is ' . len(testdump) . ' instead of ' . len(refdump)
endif
else
let msg = 'See new dump file: call term_dumpload("testdir/' .. testfile .. '")'
endif
for i in range(len(refdump))
if i >= len(testdump)
break
endif
if testdump[i] != refdump[i]
let msg = msg . '; difference in line ' . (i + 1) . ': "' . testdump[i] . '"'
endif
endfor
call assert_report(msg)
return 1
endif
let i += 1
endwhile
return 0
endfunc
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