neovim/test/unit/optionstr_spec.lua

local helpers = require('test.unit.helpers')(after_each)
local itp = helpers.gen_itp(it)

local to_cstr = helpers.to_cstr
local eq = helpers.eq

local optionstr = helpers.cimport('./src/nvim/optionstr.h')

local check_ff_value = function(ff)
  return optionstr.check_ff_value(to_cstr(ff))
end

describe('check_ff_value', function()
  itp('views empty string as valid', function()
    eq(1, check_ff_value(''))
  end)

  itp('views "unix", "dos" and "mac" as valid', function()
    eq(1, check_ff_value('unix'))
    eq(1, check_ff_value('dos'))
    eq(1, check_ff_value('mac'))
  end)

  itp('views "foo" as invalid', function()
    eq(0, check_ff_value('foo'))
  end)
end)