defmodule CnpjTest do
  @moduledoc false
  use ExUnit.Case

  test "should be invalid with invalid number" do
    cnpjs = ~w{69103604020160 00000000000000 69.103.604/0001-61 01618211000264 11111111111111}

    Enum.each(cnpjs, fn cnpj ->
      assert Brcpfcnpj.cnpj_valid?(cnpj) == false
    end)
  end

  test "should be invalid with a number longer than 14 chars, even if the first 14 represent a valid number" do
    cnpjs = ~w{691036040001-601 69103604000160a 69103604000160ABC 6910360400016000}

    Enum.each(cnpjs, fn cnpj ->
      assert Brcpfcnpj.cnpj_valid?(cnpj) == false
    end)
  end

  test "should be valid with correct number" do
    cnpjs =
      ~w{69103604000160 69.103.604/0001-60 01518211/000264 01.5182110002-64 00.000.000/1447-89}

    Enum.each(cnpjs, fn cnpj ->
      assert Brcpfcnpj.cnpj_valid?(cnpj) == true
    end)
  end

  test "should be invalid with nil input" do
    assert Brcpfcnpj.cnpj_valid?(nil) == false
  end

  test "should be invalid when starting with zeroes and order > 0300" do
    assert Brcpfcnpj.cnpj_valid?("00010000030160") == false
    assert Brcpfcnpj.cnpj_valid?("00000898246954") == false
    assert Brcpfcnpj.cnpj_valid?("00000136747140") == false
  end

  test "should allow alphanumeric characters in the cnpj" do
    assert Brcpfcnpj.cnpj_valid?("12.ABC.345/01DE-35") == true
    assert Brcpfcnpj.cnpj_valid?("12ABC34501DE35") == true
    assert Brcpfcnpj.cnpj_valid?("12abc34501de35") == true
  end

  test "should validate alphanumeric characters" do
    assert Brcpfcnpj.cnpj_valid?("12.ABC.345/01DE-34") == false
  end
end