使用 rspec 检查错误的枚举

Check for bad enum with rspec

有谁知道如何检查 rspec 中的无效枚举响应?我可以检查以确保枚举不是 nil 而没有错误,但是当我检查以确保错误的枚举值不起作用时,我收到错误。这是两个规格:

it 'is not valid without question type' do
    expect(build(:question, question_type: nil)).to have(1).errors_on(:question_type)
end

it 'is not valid with a bad question type' do
    expect(build(:question, question_type: :telepathy)).to have(1).errors_on(:question_type)
end

这是我的模型的样子:

class Question < ActiveRecord::Base
    enum question_type: [ :multiple_choice ]
    validates :question_type, presence: true

end

这是错误:

 Failure/Error: expect(build(:question, question_type: :telepathy)).to have(1).errors_on(:question_type)
     ArgumentError:
       'telepathy' is not a valid question_type

这是我的工厂:

FactoryGirl.define do
  factory :question, :class => 'Question' do
    question_type :multiple_choice
  end
end

感谢您的帮助!

您的问题是您需要期望将构建作为过程执行以评估结果。通过将括号更改为大括号来执行此操作,如

中所述
it 'is not valid with a bad question type' do
  expect { build(:question, question_type: :telepathy) }
    .to raise_error(ArgumentError)
    .with_message(/is not a valid question_type/)
end