neovim/test/functional/lua/inspector_spec.lua

local helpers = require('test.functional.helpers')(after_each)
local exec_lua = helpers.exec_lua
local eq = helpers.eq
local eval = helpers.eval
local clear = helpers.clear

describe('vim.inspect_pos', function()
  before_each(function()
    clear()
  end)

  it('it returns items', function()
    local ret = exec_lua([[
      local buf = vim.api.nvim_create_buf(true, false)
      local buf1 = vim.api.nvim_create_buf(true, false)
      local ns1 = vim.api.nvim_create_namespace("ns1")
      local ns2 = vim.api.nvim_create_namespace("")
      vim.api.nvim_set_current_buf(buf)
      vim.api.nvim_buf_set_lines(0, 0, -1, false, {"local a = 123"})
      vim.api.nvim_buf_set_lines(buf1, 0, -1, false, {"--commentline"})
      vim.api.nvim_buf_set_option(buf, "filetype", "lua")
      vim.api.nvim_buf_set_option(buf1, "filetype", "lua")
      vim.api.nvim_buf_set_extmark(buf, ns1, 0, 10, { hl_group = "Normal" })
      vim.api.nvim_buf_set_extmark(buf, ns2, 0, 10, { hl_group = "Normal" })
      vim.cmd("syntax on")
      return {buf, vim.inspect_pos(0, 0, 10), vim.inspect_pos(buf1, 0, 10).syntax }
    ]])
    local buf, items, other_buf_syntax = unpack(ret)

    eq('', eval('v:errmsg'))
    eq({
      buffer = buf,
      col = 10,
      row = 0,
      extmarks = {
        {
          col = 10,
          end_col = 11,
          end_row = 0,
          id = 1,
          ns = 'ns1',
          ns_id = 1,
          opts = {
            hl_eol = false,
            hl_group = 'Normal',
            hl_group_link = 'Normal',
            ns_id = 1,
            priority = 4096,
            right_gravity = true
          },
          row = 0
        },
        {
          col = 10,
          end_col = 11,
          end_row = 0,
          id = 1,
          ns = '',
          ns_id = 2,
          opts = {
            hl_eol = false,
            hl_group = 'Normal',
            hl_group_link = 'Normal',
            ns_id = 2,
            priority = 4096,
            right_gravity = true
          },
          row = 0
        }
      },
      treesitter = {},
      semantic_tokens = {},
      syntax = {
        {
          hl_group = 'luaNumber',
          hl_group_link = 'Constant',
        },
      },
    }, items)

    eq({
      {
        hl_group = 'luaComment',
        hl_group_link = 'Comment',
      },
    }, other_buf_syntax)
  end)
end)

describe('vim.show_pos', function()
  before_each(function()
    clear()
  end)

  it('it does not error', function()
    exec_lua([[
      local buf = vim.api.nvim_create_buf(true, false)
      vim.api.nvim_set_current_buf(buf)
      vim.api.nvim_buf_set_lines(0, 0, -1, false, {"local a = 123"})
      vim.api.nvim_buf_set_option(buf, "filetype", "lua")
      vim.cmd("syntax on")
      return {buf, vim.show_pos(0, 0, 10)}
    ]])
    eq('', eval('v:errmsg'))
  end)
end)