ale/test/test_neovim_diagnostics.vader

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Before:
Save g:ale_use_neovim_diagnostics_api
function! CollectMessages(buffer)
if !has('nvim-0.6')
return
endif
let l:messages = []
for l:diag in v:lua.vim.diagnostic.get(a:buffer)
call add(l:messages, l:diag.message)
endfor
return l:messages
endfunction
After:
unlet! b:other_bufnr
delfunction CollectMessages
Restore
Execute(Should only set diagnostics belonging to the given buffer):
if has('nvim-0.6')
let b:other_bufnr = bufnr('/foo/bar/baz', 1)
" Make sure we actually get another buffer number, or the test is invalid.
AssertNotEqual -1, b:other_bufnr
let g:ale_use_neovim_diagnostics_api = 1
call ale#engine#SetResults(bufnr('%'), [
\ {
\ 'lnum': 1,
\ 'col': 10,
\ 'bufnr': bufnr('%'),
\ 'vcol': 0,
\ 'linter_name': 'bettercode',
\ 'nr': -1,
\ 'type': 'W',
\ 'text': 'A',
\ },
\ {
\ 'lnum': 2,
\ 'col': 10,
\ 'bufnr': b:other_bufnr,
\ 'vcol': 0,
\ 'linter_name': 'bettercode',
\ 'nr': -1,
\ 'type': 'W',
\ 'text': 'B',
\ },
\ {
\ 'lnum': 3,
\ 'col': 1,
\ 'bufnr': bufnr('%'),
\ 'vcol': 0,
\ 'linter_name': 'bettercode',
\ 'nr': -1,
\ 'type': 'E',
\ 'text': 'C',
\ },
\ {
\ 'lnum': 4,
\ 'col': 1,
\ 'bufnr': b:other_bufnr,
\ 'vcol': 0,
\ 'linter_name': 'bettercode',
\ 'nr': -1,
\ 'type': 'E',
\ 'text': 'D',
\ },
\])
AssertEqual ["A", "C"], CollectMessages(bufnr('%'))
endif