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local helpers = require('test.functional.helpers')(after_each)
local curbufmeths = helpers.curbufmeths
local clear = helpers.clear
local eq = helpers.eq
local neq = helpers.neq
local eval = helpers.eval
local feed = helpers.feed
local funcs = helpers.funcs
local meths = helpers.meths
local command = helpers.command
local exc_exec = helpers.exc_exec
local redir_exec = helpers.redir_exec
before_each(clear)
local function preinc(t, v) t.value = t.value + (v or 1) return t.value end
local function changedtick()
local ct = curbufmeths.get_changedtick()
eq(ct, curbufmeths.get_var('changedtick'))
eq(ct, curbufmeths.get_var('changedtick'))
eq(ct, eval('b:changedtick'))
eq(ct, eval('b:["changedtick"]'))
eq(ct, eval('b:.changedtick'))
eq(ct, funcs.getbufvar('%', 'changedtick'))
eq(ct, funcs.getbufvar('%', '').changedtick)
eq(ct, eval('b:').changedtick)
return ct
end
describe('b:changedtick', function()
-- Ported tests from Vim-8.0.333
it('increments', function() -- Test_changedtick_increments
-- New buffer has an empty line, tick starts at 2
eq(2, changedtick())
funcs.setline(1, 'hello')
eq(3, changedtick())
eq(0, exc_exec('undo'))
-- Somehow undo counts as two changes
eq(5, changedtick())
end)
it('is present in b: dictionary', function()
eq(2, changedtick())
command('let d = b:')
eq(2, meths.get_var('d').changedtick)
end)
it('increments at bdel', function()
command('new')
eq(2, changedtick())
local bnr = curbufmeths.get_number()
eq(2, bnr)
command('bdel')
eq(3, funcs.getbufvar(bnr, 'changedtick'))
eq(1, curbufmeths.get_number())
end)
it('fails to be changed by user', function()
local ct = changedtick()
local ctn = ct + 100500
eq(0, exc_exec('let d = b:'))
eq('\nE46: Cannot change read-only variable "b:changedtick"',
redir_exec('let b:changedtick = ' .. ctn))
eq('\nE46: Cannot change read-only variable "b:["changedtick"]"',
redir_exec('let b:["changedtick"] = ' .. ctn))
eq('\nE46: Cannot change read-only variable "b:.changedtick"',
redir_exec('let b:.changedtick = ' .. ctn))
eq('\nE46: Cannot change read-only variable "d.changedtick"',
redir_exec('let d.changedtick = ' .. ctn))
-- FIXME
-- eq({fales, ''},
-- {pcall(curbufmeths.set_var, 'changedtick', ctn)})
eq('\nE795: Cannot delete variable b:changedtick',
redir_exec('unlet b:changedtick'))
eq('\nE46: Cannot change read-only variable "b:.changedtick"',
redir_exec('unlet b:.changedtick'))
eq('\nE46: Cannot change read-only variable "b:["changedtick"]"',
redir_exec('unlet b:["changedtick"]'))
eq('\nE46: Cannot change read-only variable "d.changedtick"',
redir_exec('unlet d.changedtick'))
-- FIXME
-- eq({},
-- {pcall(curbufmeths.del_var, 'changedtick')})
eq(ct, changedtick())
eq('\nE46: Cannot change read-only variable "b:["changedtick"]"',
redir_exec('let b:["changedtick"] += ' .. ctn))
eq('\nE46: Cannot change read-only variable "b:["changedtick"]"',
redir_exec('let b:["changedtick"] -= ' .. ctn))
eq('\nE46: Cannot change read-only variable "b:["changedtick"]"',
redir_exec('let b:["changedtick"] .= ' .. ctn))
eq(ct, changedtick())
funcs.setline(1, 'hello')
eq(ct + 1, changedtick())
end)
it('is listed in :let output', function()
eq('\nb:changedtick #2',
redir_exec(':let b:'))
end)
it('fails to unlock b:changedtick', function()
-- Note:
-- - unlocking VAR_FIXED variables is not an error.
-- - neither VAR_FIXED variables are reported as locked by islocked().
-- So test mostly checks that b:changedtick status does not change.
eq(0, exc_exec('let d = b:'))
eq(0, funcs.islocked('b:changedtick'))
eq(0, funcs.islocked('d.changedtick'))
eq('',
redir_exec('unlockvar b:changedtick'))
eq('\nE46: Cannot change read-only variable "d.changedtick"',
redir_exec('unlockvar d.changedtick'))
eq(0, funcs.islocked('b:changedtick'))
eq(0, funcs.islocked('d.changedtick'))
end)
it('is being completed', function()
feed(':echo b:<Tab><Home>let cmdline="<End>"<CR>')
eq('echo b:changedtick', meths.get_var('cmdline'))
end)
it('cannot be changed by filter() or map()', function()
eq(2, changedtick())
eq('\nE795: Cannot delete variable filter() argument',
redir_exec('call filter(b:, 0)'))
eq('\nE742: Cannot change value of map() argument',
redir_exec('call map(b:, 0)'))
eq('\nE742: Cannot change value of map() argument',
redir_exec('call map(b:, "v:val")'))
eq(2, changedtick())
end)
it('cannot be remove()d', function()
eq(2, changedtick())
eq('\nE795: Cannot delete variable remove() argument',
redir_exec('call remove(b:, "changedtick")'))
eq(2, changedtick())
end)
it('does not inherit VAR_FIXED when copying dictionary over', function()
eq(2, changedtick())
eq('', redir_exec('let d1 = copy(b:)|let d1.changedtick = 42'))
eq('', redir_exec('let d2 = copy(b:)|unlet d2.changedtick'))
eq(2, changedtick())
end)
end)
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