使用 Rspec 和 factory_bot 测试邮件程序

Question

• 嘿伙计们，我需要帮助，我是测试新手，正在测试我的邮件程序，但我不明白你们在我运行测试时遇到了这个错误。
• '预计

  ActionMailer::Base.deliveries.size

  已经改变了1，但是被改变了2'
• 电子邮件由

  after_create

  挂钩触发
• 我的代码按预期工作，但测试失败。任何提供帮助的人都将不胜感激。

verfiy_mailer.rb

# frozen_string_literal: true

class VerifyMailer < ApplicationMailer
  def verification_email(user)
    @user = user
    mail(to: user.email, subject: 'verification code')
  end
end

verify_mailer_spec.rb

# frozen_string_literal: true

require 'rails_helper'
# include ActiveJob::TestHelper

RSpec.describe VerifyMailer, type: :mailer do
  let(:user) { create(:user) }
  let(:mail) { VerifyMailer.verification_email(user).deliver_now }

  it 'renders the receiver email' do
    expect(mail.to).to eq([user.email])
  end
  it 'renders the subject' do
    expect(mail.subject).to eq('verification code')
  end
  it 'renders the sender email' do
    expect(mail.from).to eq(['[email protected]'])
  end
end

user.rb

# frozen_string_literal: true

class User < ApplicationRecord
  after_create :send_user_otp
  attr_writer :login

  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable ,

  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable, authentication_keys: [:username]
  has_many :payments
  validates :email, :username, presence: true, uniqueness: true
  validates :username, format: { with: /\A[a-zA-Z0-9_.]*\z/,
                                 message: ' only allow letter, number, underscore and punctuation marks' }

  # Loggin with user_name
  def login
    @login || username
  end

  def send_user_otp
    unverify!
    otp = generate_codes
    update_column(:otp_code, otp)
    VerifyMailer.verification_email(self).deliver_now
    touch(:otp_sent_at)
  end

  def unverify!
    update_column(:verified, false)
  end

  def generate_codes
    loop do
      code = rand(0o00000..999_999).to_s
      break code unless code.length != 6
    end
  end
end

• 我添加了 config.action_mailer.delivery_method = :test 到 enviroment/test.rb

• 我还使用 factory_bot_rails 创建用户

FactoryBot.define do
  factory :user do
    sequence(:email) { |n| "person#{n}@example.com" }
    sequence(:username) { |n| "user#{n}" }
    password { '!Mutebi2' }
    password_confirmation { '!Mutebi2' }
  end
end