意外调用：运行包含 mock_model 的 rspec 规范时的 __mock_proxy()

Question

我的很多规范都失败了，并给我一个关于 __mock_proxy() 的错误消息：

$ rspec spec/helpers/liaisons_helper_spec.rb
WARNING: Cucumber-rails required outside of env.rb.  The rest of loading is being defered until env.rb is called.
  To avoid this warning, move 'gem cucumber-rails' under only group :test in your Gemfile
FF

Failures:

  1) LiaisonsHelper hrefs_of_email_addresses_for_liaison to enumerate email_addresses as RESTful links
     Failure/Error: email_address = mock_model(EmailAddress)
     Mocha::ExpectationError:
       unexpected invocation: #<Mock:EmailAddress_1001>.__mock_proxy()
       unsatisfied expectations:
       - expected exactly once, not yet invoked: #<Mock:EmailAddress_1001>.id(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:EmailAddress_1001>.blank?(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:EmailAddress_1001>.valid?(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:EmailAddress_1001>.marked_for_destruction?(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:EmailAddress_1001>.destroyed?(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:EmailAddress_1001>.persisted?(any_parameters)
     # ./spec/helpers/liaisons_helper_spec.rb:6:in `block (3 levels) in <top (required)>'

  2) LiaisonsHelper hrefs_of_phone_numbers_for_liaison to enumerate phone_numbers as RESTful links
     Failure/Error: phone_number = mock_model(PhoneNumber)
     Mocha::ExpectationError:
       unexpected invocation: #<Mock:PhoneNumber_1002>.__mock_proxy()
       unsatisfied expectations:
       - expected exactly once, not yet invoked: #<Mock:PhoneNumber_1002>.id(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:PhoneNumber_1002>.blank?(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:PhoneNumber_1002>.valid?(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:PhoneNumber_1002>.marked_for_destruction?(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:PhoneNumber_1002>.destroyed?(any_parameters)
       - expected exactly once, not yet invoked: #<Mock:PhoneNumber_1002>.persisted?(any_parameters)
     # ./spec/helpers/liaisons_helper_spec.rb:19:in `block (3 levels) in <top (required)>'

我正在运行 Rails 3.1.4 和 Ruby 1.9.2，并且正在使用这些 gem：

$ bundle list | grep mocha
  * mocha (0.10.5)
  * rspec-rails-mocha (0.3.1)
$ bundle list | grep rspec
  * rspec (2.8.0)
  * rspec-apotomo (0.9.6)
  * rspec-cells (0.1.2)
  * rspec-core (2.8.0)
  * rspec-expectations (2.8.0)
  * rspec-mocks (2.8.0)
  * rspec-rails (2.8.1)
  * rspec-rails-mocha (0.3.1)

我发现了一些关于人们遇到相同错误的报告，包括 this one on github，但它们似乎都已过时或未包含解决方案。

---

编辑：这些规格适用于我同事的计算机，但不适用于我的计算机。看起来差异与 RSpec::Rails::Mocha 和 RSpec::Rails::Mocks 包含在什么顺序有关 - RSpec::Rails::Mocha 必须最后包含。

我制作了一个测试规范，其输出显示如下：

describe 'test' do
  it 'test' do
    m = self.method(:mock_model)
    p m
    p m.source_location
    p self.class.included_modules.map(&:to_s).grep(/Moc/)
  end
end

在我同事的计算机上（规范工作的地方），它产生了以下输出：

#<Method: RSpec::Core::ExampleGroup::Nested_1::Nested_1(RSpec::Rails::Mocha)#mock_model>
["/Users/username/.rvm/gems/ruby-1.9.2-p290-patched@development3/gems/rspec-rails-mocha-0.3.1/lib/rspec/rails/mocha.rb", 59]
["RSpec::Rails::Mocha", "RSpec::Rails::Mocks", "RSpec::Core::MockFrameworkAdapter", "Mocha::API", "Mocha::ParameterMatchers", "Mocha::ObjectMethods"]

在我的电脑上（规范不起作用），它产生了这个输出：

#<Method: RSpec::Core::ExampleGroup::Nested_1::Nested_1(RSpec::Rails::Mocks)#mock_model>
["/Users/username/.rvm/gems/ruby-1.9.2-p290-patched@development3/gems/rspec-rails-2.9.0/lib/rspec/rails/mocks.rb", 67]
["RSpec::Rails::Mocks", "RSpec::Rails::Mocha", "RSpec::Core::MockFrameworkAdapter", "Mocha::API", "Mocha::ParameterMatchers", "Mocha::ObjectMethods"]

Answer 1

通过将 :require => false 添加到 Gemfile 中的 rspec-rails-mocha 行来解决此问题。