RuntimeError:在rails 5.1中运行rspec时无法修改冻结的数组

Question

我最近从v4.3升级到Rails 5.1,现在运行测试时出现此错误:

An error occurred while loading 

./spec/controllers/admin/capacity_charges_controller_spec.rb.
Failure/Error: require File.expand_path('../../config/environment', __FILE__)

RuntimeError:
  can't modify frozen Array

我得到每个测试文件.触发错误的行来自rails_helper.我检查了rails 5.1样品回购,我们的版本没有什么大不相同.

完整的堆栈跟踪是:

RuntimeError:


can't modify frozen Array
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/actionpack-5.1.0/lib/action_dispatch/middleware/stack.rb:74:in `insert'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/actionpack-5.1.0/lib/action_dispatch/middleware/stack.rb:74:in `insert'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/actionpack-5.1.0/lib/action_dispatch/middleware/stack.rb:81:in `insert_after'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/request_store-1.3.2/lib/request_store/railtie.rb:5:in `block in <class:Railtie>'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/railties-5.1.0/lib/rails/initializable.rb:30:in `instance_exec'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/railties-5.1.0/lib/rails/initializable.rb:30:in `run'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/railties-5.1.0/lib/rails/initializable.rb:59:in `block in run_initializers'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/railties-5.1.0/lib/rails/initializable.rb:58:in `run_initializers'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/railties-5.1.0/lib/rails/application.rb:353:in `initialize!'
# ./config/environment.rb:5:in `<top (required)>'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:292:in `require'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:292:in `block in require'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:258:in `load_dependency'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:292:in `require'
# ./spec/rails_helper.rb:12:in `<top (required)>'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:292:in `require'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:292:in `block in require'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:258:in `load_dependency'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:292:in `require'
# ./spec/controllers/admin/capacity_charges_controller_spec.rb:3:in `<top (required)>'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:286:in `load'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:286:in `block in load'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:258:in `load_dependency'
# /Users/jeremynagel/.rvm/gems/ruby-2.3.1@Rails4.2_EnergyLink/gems/activesupport-5.1.0/lib/active_support/dependencies.rb:286:in `load'

Answer 1

事实证明这是由堆栈跟踪中更高的测试失败引起的.很难看出根本原因是什么,因为控制台中有这么多.如果你遇到这个问题,我建议使用--fail-fast,这样你就不会被重复的错误消息所淹没.然后检查第一个错误是什么.

Answer 2

我确实rspec | less找到了第一个错误

Answer 3

对我来说，这是一个FactoryBot更新从版本4到5。我没有看到弃用警告，因为我跳过了版本：

DEPRECATION WARNING: Static attributes will be removed in FactoryBot 5.0.

Answer 4

首先检查您的测试数据库是否是最新的。

耙数据库：测试：准备。

Answer 5

有时，如果 Ruby 类中的类名继承错误，也会引发此异常。请记住，控制器、模型等在 Ruby 中都是常量。

这是我遇到的情况中的一个例子。实际的语法可能不正确，但这是导致我的问题的概念。

module Admin
  class BaseController < ::ApplicationController
    ...
  end
end

# throws error, referencing constant that does not exist.
# Should be < ::Admin::BaseController
class OtherController < ::BaseController
end

和其他人一样，我的整个rspec套件都会因错误而失败can't modify a frozen Array，在这种情况下，这本身并不是一个非常有用的堆栈跟踪。

希望这可以让其他人免于花几个小时寻找其他东西！