discourse/spec/components/validators/email_validator_spec.rb

require 'rails_helper'

describe EmailValidator do

  let(:record) { }
  let(:validator) { described_class.new({attributes: :email}) }
  subject(:validate) { validator.validate_each(record,:email,record.email) }

  def blocks?(email)
    user = Fabricate.build(:user, email: email)
    validator = EmailValidator.new(attributes: :email)
    validator.validate_each(user, :email, user.email)
    user.errors[:email].present?
  end

  context "blocked email" do
    it "doesn't add an error when email doesn't match a blocked email" do
      expect(blocks?('sam@sam.com')).to eq(false)
    end

    it "adds an error when email matches a blocked email" do
      ScreenedEmail.create!(email: 'sam@sam.com', action_type: ScreenedEmail.actions[:block])
      expect(blocks?('sam@sam.com')).to eq(true)
    end

    it "blocks based on email_domains_blacklist" do
      SiteSetting.email_domains_blacklist = "email.com|mail.com|e-mail.com"
      expect(blocks?('sam@email.com')).to eq(true)
      expect(blocks?('sam@bob.email.com')).to eq(true)
      expect(blocks?('sam@e-mail.com')).to eq(true)
      expect(blocks?('sam@googlemail.com')).to eq(false)
    end
  end

end