path: root/test/functional/shada/merging_spec.lua

-- ShaDa merging data support
local helpers = require('test.functional.helpers')
local nvim_command, funcs, curbufmeths, eq =
  helpers.command, helpers.funcs,
  helpers.curbufmeths, helpers.eq
local exc_exec, redir_exec = helpers.exc_exec, helpers.redir_exec

local shada_helpers = require('test.functional.shada.helpers')
local reset, clear, get_shada_rw =
  shada_helpers.reset, shada_helpers.clear, shada_helpers.get_shada_rw
local read_shada_file = shada_helpers.read_shada_file

local wshada, sdrcmd, shada_fname =
  get_shada_rw('Xtest-functional-shada-merging.shada')

describe('ShaDa history merging code', function()
  before_each(reset)
  after_each(function()
    clear()
    os.remove(shada_fname)
  end)

  it('takes item with greater timestamp from Neovim instance when reading',
  function()
    wshada('\004\001\009\147\000\196\002ab\196\001a')
    eq(0, exc_exec(sdrcmd()))
    wshada('\004\000\009\147\000\196\002ab\196\001b')
    eq(0, exc_exec(sdrcmd()))
    os.remove(shada_fname)
    eq(0, exc_exec('wshada! ' .. shada_fname))
    local found = 0
    for _, v in ipairs(read_shada_file(shada_fname)) do
      if v.type == 4 and v.value[1] == 0 and v.value[2] == 'ab' then
        eq(1, v.timestamp)
        eq('a', v.value[3])
        found = found + 1
      end
    end
    eq(1, found)
  end)

  it('takes item with equal timestamp from Neovim instance when reading',
  function()
    wshada('\004\000\009\147\000\196\002ab\196\001a')
    eq(0, exc_exec(sdrcmd()))
    wshada('\004\000\009\147\000\196\002ab\196\001b')
    eq(0, exc_exec(sdrcmd()))
    os.remove(shada_fname)
    eq(0, exc_exec('wshada! ' .. shada_fname))
    local found = 0
    for _, v in ipairs(read_shada_file(shada_fname)) do
      if v.type == 4 and v.value[1] == 0 and v.value[2] == 'ab' then
        eq(0, v.timestamp)
        eq('a', v.value[3])
        found = found + 1
      end
    end
    eq(1, found)
  end)

  it('takes item with greater timestamp from ShaDa when reading',
  function()
    wshada('\004\000\009\147\000\196\002ab\196\001a')
    eq(0, exc_exec(sdrcmd()))
    wshada('\004\001\009\147\000\196\002ab\196\001b')
    eq(0, exc_exec(sdrcmd()))
    os.remove(shada_fname)
    eq(0, exc_exec('wshada! ' .. shada_fname))
    local found = 0
    for _, v in ipairs(read_shada_file(shada_fname)) do
      if v.type == 4 and v.value[1] == 0 and v.value[2] == 'ab' then
        eq(1, v.timestamp)
        eq('b', v.value[3])
        found = found + 1
      end
    end
    eq(1, found)
  end)

  it('takes item with greater timestamp from Neovim instance when writing',
  function()
    wshada('\004\001\009\147\000\196\002ab\196\001a')
    eq(0, exc_exec(sdrcmd()))
    wshada('\004\000\009\147\000\196\002ab\196\001b')
    eq(0, exc_exec('wshada ' .. shada_fname))
    local found = 0
    for _, v in ipairs(read_shada_file(shada_fname)) do
      if v.type == 4 and v.value[1] == 0 and v.value[2] == 'ab' then
        eq(1, v.timestamp)
        eq('a', v.value[3])
        found = found + 1
      end
    end
    eq(1, found)
  end)

  it('takes item with equal timestamp from Neovim instance when writing',
  function()
    wshada('\004\000\009\147\000\196\002ab\196\001a')
    eq(0, exc_exec(sdrcmd()))
    wshada('\004\000\009\147\000\196\002ab\196\001b')
    eq(0, exc_exec('wshada ' .. shada_fname))
    local found = 0
    for _, v in ipairs(read_shada_file(shada_fname)) do
      if v.type == 4 and v.value[1] == 0 and v.value[2] == 'ab' then
        eq(0, v.timestamp)
        eq('a', v.value[3])
        found = found + 1
      end
    end
    eq(1, found)
  end)

  it('takes item with greater timestamp from ShaDa when writing',
  function()
    wshada('\004\000\009\147\000\196\002ab\196\001a')
    eq(0, exc_exec(sdrcmd()))
    wshada('\004\001\009\147\000\196\002ab\196\001b')
    eq(0, exc_exec('wshada ' .. shada_fname))
    local found = 0
    for _, v in ipairs(read_shada_file(shada_fname)) do
      if v.type == 4 and v.value[1] == 0 and v.value[2] == 'ab' then
        eq(1, v.timestamp)
        eq('b', v.value[3])
        found = found + 1
      end
    end
    eq(1, found)
  end)

  it('correctly reads history items with messed up timestamps',
  function()
    wshada('\004\010\009\147\000\196\002ab\196\001a'
           .. '\004\010\009\147\000\196\002ac\196\001a'
           .. '\004\005\009\147\000\196\002ad\196\001a'
           .. '\004\100\009\147\000\196\002ae\196\001a'
           .. '\004\090\009\147\000\196\002af\196\001a'
          )
    eq(0, exc_exec(sdrcmd()))
    os.remove(shada_fname)
    eq(0, exc_exec('wshada! ' .. shada_fname))
    local items = {'ad', 'ab', 'ac', 'af', 'ae'}
    for i, v in ipairs(items) do
      eq(v, funcs.histget(':', i