local helpers = require('test.functional.helpers')(after_each)

local eq = helpers.eq
local eval = helpers.eval
local command = helpers.command
local clear = helpers.clear
local funcs = helpers.funcs
local pcall_err = helpers.pcall_err

before_each(clear)
for _, func in ipairs({'min', 'max'}) do
  describe(func .. '()', function()
    it('gives a single error message when multiple values failed conversions',
    function()
      eq('Vim(echo):E745: Using a List as a Number',
         pcall_err(command, 'echo ' .. func .. '([-5, [], [], [], 5])'))
      eq('Vim(echo):E745: Using a List as a Number',
         pcall_err(command, 'echo ' .. func .. '({1:-5, 2:[], 3:[], 4:[], 5:5})'))
      for errmsg, errinput in pairs({
        ['Vim(echo):E745: Using a List as a Number'] = '[]',
        ['Vim(echo):E805: Using a Float as a Number'] = '0.0',
        ['Vim(echo):E703: Using a Funcref as a Number'] = 'function("tr")',
        ['Vim(echo):E728: Using a Dictionary as a Number'] = '{}',
      }) do
        eq(errmsg, pcall_err(command, 'echo ' .. func .. '([' .. errinput .. '])'))
        eq(errmsg, pcall_err(command, 'echo ' .. func .. '({1:' .. errinput .. '})'))
      end
    end)
    it('works with arrays/dictionaries with zero items', function()
      eq(0, funcs[func]({}))
      eq(0, eval(func .. '({})'))
    end)
    it('works with arrays/dictionaries with one item', function()
      eq(5, funcs[func]({5}))
      eq(5, funcs[func]({test=5}))
    end)
    it('works with NULL arrays/dictionaries', function()
      eq(0, eval(func .. '(v:_null_list)'))
      eq(0, eval(func .. '(v:_null_dict)'))
    end)
    it('errors out for invalid types', function()
      for _, errinput in ipairs({'1', 'v:true', 'v:false', 'v:null',
                                 'function("tr")', '""'}) do
        eq(('Vim(echo):E712: Argument of %s() must be a List or Dictionary'):format(func),
           pcall_err(command, 'echo ' .. func .. '(' .. errinput .. ')'))
      end
    end)
  end)
end
