rails/activemodel/test/cases/secure_password_test.rb

require 'cases/helper'
require 'models/user'

class SecurePasswordTest < ActiveModel::TestCase

  setup do
    User.weak_passwords = %w( password qwerty 123456 )
    @user = User.new
  end

  test "there should be a list of default weak passwords" do
    assert_equal %w( password qwerty 123456 ), User.weak_passwords
  end

  test "specifying the list of passwords" do
    User.weak_passwords = %w( pass )
    assert_equal %w( pass ), User.weak_passwords
  end

  test "specifying the list of passwords in the class" do
    User.send(:set_weak_passwords, ['pass'])
    assert_equal %w( pass ), User.weak_passwords
  end

  test "adding to the list of passwords" do
    User.weak_passwords << 'pass'
    @user.password = "password"
    assert !@user.valid?

    @user.password = "pass"
    assert !@user.valid?
  end

  test "password must be present" do
    assert !@user.valid?
    assert_equal 1, @user.errors.size
  end

  test "password must match confirmation" do
    @user.password = "thiswillberight"
    @user.password_confirmation = "wrong"

    assert !@user.valid?

    @user.password_confirmation = "thiswillberight"

    assert @user.valid?
  end

  test "password must pass validation rules" do
    @user.password = "password"
    assert !@user.valid?

    @user.password = "short"
    assert !@user.valid?

    @user.password = "plentylongenough"
    assert @user.valid?
  end

  test "too weak passwords" do
    @user.password = "012345"
    assert !@user.valid?
    assert_equal ["is too short (minimum is 7 characters)"], @user.errors[:password]

    @user.password = "password"
    assert !@user.valid?
    assert_equal ["is too weak and common"], @user.errors[:password]

    @user.password = "d9034rfjlakj34RR$!!"
    assert @user.valid?
  end

  test "authenticate" do
    @user.password = "secret"

    assert !@user.authenticate("wrong")
    assert @user.authenticate("secret")
  end
end