NoMethodError: undefined method count in rspec while testing my mailer

Question

我尝试测试我的邮件程序，但我的 .count 出现错误，这是我的 Mailer.rb

def prices_mailer(recipient, prices, sender)
    @sender = sender.fullname
    email = recipient.email
    @name = recipient.fullname
    @prices = prices
    @prices_count = @prices.count

@subject = 'test'
set_meta_data(__method__)
mail(to:email, subject: @subject, from: sender)
end

当我尝试使用 rspec 进行测试时，这就是我正在做的事情

describe 'prices_mailer' do
    let(:price) { create(:price) }
    let(:recipient) { 'John.doe2@gmail.com' }
    let(:sender) { 'John.doe@gmail.com' }
    let(:mail) { described_class.prices_mailer(recipient, price, sender_email) }
end

it 'renders the headers' do
      expect(mail.subject).to eq('test')
end

当我运行规范时，出现以下错误： NoMethodError: undefined method count for #<Price

有人知道如何解决这个问题吗？

Answer 1

您的邮件程序需要数组或 ActiveRecord 关系作为第二个参数：

def prices_mailer(recipient, prices, sender)

参数名称是复数，您正在对其调用 #count。

但您的规格正在通过单一价格：

described_class.prices_mailer(recipient, price, sender_email)

更新您的规格以发送数组：

described_class.prices_mailer(recipient, [price], sender_email)

或更新您的邮件程序以处理单一价格：

def prices_mailer(recipient, prices, sender)
  prices = Array(prices)
  #...

Array(prices) 将为 prices.

处理数组、AR 关系、单个值...

NoMethodError: undefined method count in rspec while testing my mailer

NoMethodError: undefined method count in rspec while testing my mailer

ruby

rspec

ruby-on-rails