-- Set up Lua path
package.path = "./lua/?.lua;./lua/?/init.lua;" .. package.path

-- Extend existing vim global
if not _G.vim then _G.vim = {} end

local vim = _G.vim

-- Mock missing vim functions if they don't exist
vim.fn = vim.fn or {}
vim.fn.stdpath = vim.fn.stdpath or function(type)
  return "/tmp/notex_test"
end
vim.fn.getpid = vim.fn.getpid or function()
  return 12345
end

vim.loop = vim.loop or {}
vim.loop.fs_stat = vim.loop.fs_stat or function(path)
  return {type = "file", size = 100}
end
vim.loop.timer_start = vim.loop.timer_start or function(delay, callback)
  return 1
end
vim.loop.timer_stop = vim.loop.timer_stop or function(timer_id)
  -- Mock timer stop
end

vim.uv = vim.uv or {}
vim.uv.new_timer = vim.uv.new_timer or function()
  return {
    start = function() end,
    stop = function() end,
    close = function() end
  }
end
vim.uv.hrtime = vim.uv.hrtime or function()
  return os.clock() * 1e9
end

vim.trim = vim.trim or function(str)
  return str:match("^%s*(.-)%s*$")
end

vim.split = vim.split or function(str, sep)
  local fields = {}
  local pattern = string.format("([^%s]+)", sep)
  str:gsub(pattern, function(c) fields[#fields + 1] = c end)
  return fields
end

vim.tbl_contains = vim.tbl_contains or function(t, val)
  for _, v in ipairs(t) do
    if v == val then return true end
  end
  return false
end

-- Add missing API functions
vim.api = vim.api or {}
vim.api.nvim_buf_get_lines = vim.api.nvim_buf_get_lines or function() return {} end
vim.api.nvim_buf_set_lines = vim.api.nvim_buf_set_lines or function() end
vim.api.nvim_create_buf = vim.api.nvim_create_buf or function() return 1 end

vim.g = vim.g or {}
vim.b = vim.b or {}
vim.o = vim.o or {}
vim.bo = vim.bo or {}
vim.wo = vim.wo or {}

-- Mock scheduler
vim.schedule = vim.schedule or function(fn) fn() end
vim.defer_fn = vim.defer_fn or function(fn, delay) fn() end

-- Run busted with command line args
local busted = require('busted')
local args = arg or {}
if #args == 0 then
  args = {'tests/', '--verbose'}
end
busted.run(args)