RSpec 帮助规范失败但在浏览器中有效

Question

我有一个辅助方法 return 表单中相应字段下的错误消息。在浏览器中，它按预期工作并显示错误消息（如果有），但助手的规范失败了。

我错过了什么？

# _form.html.haml
= form_for [:admin, @partner] do |f|
  = f.select :trader_id, options_for_select(@traders.map { |trader| [trader.company_name, trader.id] }, selected: @partner.trader_id), {}, class: 'form-control form-control-sm'
  = error_message(@partner, :trader)

# errors_helper.rb
def error_message(object, field)
  return unless object.errors[:"#{field}"]

  content_tag :div do
    object.errors[:"#{field}"].each do |msg|
      concat content_tag(:small, msg, class: 'text-danger')
    end
  end
end

#errors_helper_spec.rb
require 'rails_helper'

RSpec.describe ErrorsHelper do
  describe '#error_message' do
    it 'returns an error message' do
      object = build(:trader, company_name: nil)
      expect(helper.error_message(object, object.company_name)).to have_content('moet ingevuld zijn')
    end
  end
end

运行这个规格告诉我：

expected to find text "moet ingevuld zijn" in ""

Answer 1

object.company_namereturns公司名称。

您需要列的名称，而不是列的值

所以而不是...

expect(helper.error_message(object, object.company_name)).to have_content('moet ingevuld zijn')

使用...

expect(helper.error_message(object, 'company_name')).to have_content('moet ingevuld zijn')

此外，您需要调用验证来检查错误消息...

object = build(:trader, company_name: nil)
object.valid?
expect(helper.error_message(object, 'company_name')).to have_content('moet ingevuld zijn')

RSpec 帮助规范失败但在浏览器中有效

RSpec helper spec fails but works in browser

ruby-on-rails

rspec-rails