defmodule BrcpfcnpjTest do
  @moduledoc false
  use ExUnit.Case
  doctest Brcpfcnpj
  doctest Cpfcnpj

  test "should return the formated cpf" do
    assert Brcpfcnpj.cpf_format("11144477735") == "111.444.777-35"
  end

  test "should return nil to wrong cpf" do
    assert Brcpfcnpj.cpf_format("11144477731") == nil
  end

  test "should return the formated cnpj" do
    assert Brcpfcnpj.cnpj_format("69103604000160") == "69.103.604/0001-60"
  end

  test "should return the formated alphanumeric cnpj" do
    assert Brcpfcnpj.cnpj_format("UNZ98FFWCLCV50") == "UN.Z98.FFW/CLCV-50"
  end

  test "should accept cnpj with lowercase alphanumeric numbers" do
    assert Brcpfcnpj.cnpj_format("eglux3vv2v5p04") == "eg.lux.3vv/2v5p-04"
  end

  test "should return nil to the wrong cnpj" do
    assert Brcpfcnpj.cnpj_format("69103604000161") == nil
  end

  test "should generate a valid cpf" do
    assert Brcpfcnpj.cpf_valid?(Brcpfcnpj.cpf_generate())
  end

  test "should generate a valid cnpj" do
    assert Brcpfcnpj.cnpj_valid?(Brcpfcnpj.cnpj_generate())
  end

  test "should generate a formatted cpf" do
    cpf = Brcpfcnpj.cpf_generate(true)
    assert Regex.match?(~r/(\d{3})[.]?(\d{3})[.]?(\d{3})[-]?(\d{2})/, cpf)
    assert Brcpfcnpj.cpf_valid?(cpf)
  end

  test "should correctly validate a valid cnpj starting with '000'" do
    valid_cnpj = "00012345000165"
    assert Brcpfcnpj.cnpj_valid?(valid_cnpj)
  end

  test "should correctly validate a invalid cnpj starting with '000'" do
    invalid_cnpj = "00012345030153"
    refute Brcpfcnpj.cnpj_valid?(invalid_cnpj)
  end

  test "should generate a formatted cnpj" do
    cnpj = Brcpfcnpj.cnpj_generate(true)

    assert Regex.match?(
             ~r/([0-9A-Z]{2})[.]?([0-9A-Z]{3})[.]?([0-9A-Z]{3})[\/]?([0-9A-Z]{4})[-]?([0-9A-Z]{2})/,
             cnpj
           )

    assert Brcpfcnpj.cnpj_valid?(cnpj)
  end

  test "should generate a cpf" do
    cpf = Brcpfcnpj.cpf_generate()
    assert String.length(cpf) == 11
    assert Brcpfcnpj.cpf_valid?(cpf)
  end

  test "should generate a cnpj" do
    cnpj = Brcpfcnpj.cnpj_generate()
    assert String.length(cnpj) == 14
    assert Brcpfcnpj.cnpj_valid?(cnpj)
  end

  test "should always generate valid cpfs" do
    Enum.each(0..5000, fn _ ->
      assert Brcpfcnpj.cpf_valid?(Brcpfcnpj.cpf_generate())
    end)
  end

  test "should always generate valid cnpjs" do
    Enum.each(0..5000, fn _ ->
      assert Brcpfcnpj.cnpj_valid?(Brcpfcnpj.cnpj_generate())
    end)
  end
end