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local t = require('test.testutil')
local n = require('test.functional.testnvim')()

local clear = n.clear
local command = n.command
local eq = t.eq
local eval = n.eval
local feed = n.feed
local api = n.api
local testprg = n.testprg
local retry = t.retry

describe(':ls', function()
  before_each(function()
    clear()
  end)

  --- @param start_running_term fun()
  --- @param start_finished_term fun()
  local function test_ls_terminal_buffer(start_running_term, start_finished_term)
    command('edit foo')
    command('set hidden')
    start_running_term()
    command('vsplit')
    start_finished_term()

    retry(nil, 5000, function()
      local ls_output = eval('execute("ls")')
      -- Normal buffer.
      eq('\n  1  h ', string.match(ls_output, '\n *1....'))
      -- Terminal buffer [R]unning.
      eq('\n  2 #aR', string.match(ls_output, '\n *2....'))
      -- Terminal buffer [F]inished.
      eq('\n  3 %aF', string.match(ls_output, '\n *3....'))
    end)

    retry(nil, 5000, function()
      local ls_output = eval('execute("ls R")')
      -- Just the [R]unning terminal buffer.
      eq('\n  2 #aR ', string.match(ls_output, '^\n *2 ... '))
    end)

    retry(nil, 5000, function()
      local ls_output = eval('execute("ls F")')
      -- Just the [F]inished terminal buffer.
      eq('\n  3 %aF ', string.match(ls_output, '^\n *3 ... '))
    end)
  end

  describe('R, F for', function()
    it('terminal buffers', function()
      api.nvim_set_option_value('shell', string.format('"%s" INTERACT', testprg('shell-test')), {})
      test_ls_terminal_buffer(function()
        command('terminal')
      end, function()
        command('terminal')
        feed('iexit<cr>')
      end)
    end)

    it('nvim_open_term() buffers', function()
      test_ls_terminal_buffer(function()
        command('enew | call nvim_open_term(0, {})')
      end, function()
        command('enew | call chanclose(nvim_open_term(0, {}))')
      end)
    end)
  end)
end)