【问题标题】:RSpec Cannot find my Controllers Uninitialized ConstantRSpec 找不到我的控制器未初始化常量
【发布时间】:2014-12-04 22:56:24
【问题描述】:

我的 rails 应用程序最近从 Rails 3 迁移到 Rails 4,我一直在尝试对单个规范(控制器、模型等)运行 rspec,但实际上定位对象似乎存在问题。例如,当我尝试运行以下代码时,它会出现未初始化的常量错误。这似乎发生在多个控制器上。我已经尝试删除 rails_helper.rb 和 spec_helper.rb 并运行 rails generate rspec:install 但它似乎无法解决错误。为什么找不到控制器?

我正在尝试执行的操作

-> rspec spec/controllers/activity_controller_spec.rb 
/Users/osx_user/rails_projects/tealeaf_rails/ltbweb/spec/controllers/activity_controller_spec.rb:4:in `<top (required)>': uninitialized constant ActivitiesController (NameError)

rails_helper.rb

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV["RAILS_ENV"] ||= 'test'
require 'spec_helper'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
# Add additional requires below this line. Rails is not loaded until this point!

# Requires supporting ruby files with custom matchers and macros, etc, in
# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
# run as spec files by default. This means that files in spec/support that end
# in _spec.rb will both be required and run as specs, causing the specs to be
# run twice. It is recommended that you do not name files matching this glob to
# end with _spec.rb. You can configure this pattern with the --pattern
# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
#
# The following line is provided for convenience purposes. It has the downside
# of increasing the boot-up time by auto-requiring all files in the support
# directory. Alternatively, in the individual `*_spec.rb` files, manually
# require only the support files necessary.
#
# Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }

# Checks for pending migrations before tests are run.
# If you are not using ActiveRecord, you can remove this line.
ActiveRecord::Migration.maintain_test_schema!

RSpec.configure do |config|
  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  config.fixture_path = "#{::Rails.root}/spec/fixtures"

  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true

  # RSpec Rails can automatically mix in different behaviours to your tests
  # based on their file location, for example enabling you to call `get` and
  # `post` in specs under `spec/controllers`.
  #
  # You can disable this behaviour by removing the line below, and instead
  # explicitly tag your specs with their type, e.g.:
  #
  #     RSpec.describe UsersController, :type => :controller do
  #       # ...
  #     end
  #
  # The different available types are documented in the features, such as in
  # https://relishapp.com/rspec/rspec-rails/docs
  config.infer_spec_type_from_file_location!
end

spec_helper.rb

# This file was generated by the `rails generate rspec:install` command. Conventionally, all
# specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
# The generated `.rspec` file contains `--require spec_helper` which will cause this
# file to always be loaded, without a need to explicitly require it in any files.
#
# Given that it is always loaded, you are encouraged to keep this file as
# light-weight as possible. Requiring heavyweight dependencies from this file
# will add to the boot time of your test suite on EVERY test run, even for an
# individual file that may not need all of that loaded. Instead, consider making
# a separate helper file that requires the additional dependencies and performs
# the additional setup, and require it from the spec files that actually need it.
#
# The `.rspec` file also contains a few flags that are not defaults but that
# users commonly want.
#
# See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
RSpec.configure do |config|
  # rspec-expectations config goes here. You can use an alternate
  # assertion/expectation library such as wrong or the stdlib/minitest
  # assertions if you prefer.
  config.expect_with :rspec do |expectations|
    # This option will default to `true` in RSpec 4. It makes the `description`
    # and `failure_message` of custom matchers include text for helper methods
    # defined using `chain`, e.g.:
    # be_bigger_than(2).and_smaller_than(4).description
    #   # => "be bigger than 2 and smaller than 4"
    # ...rather than:
    #   # => "be bigger than 2"
    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
  end

  # rspec-mocks config goes here. You can use an alternate test double
  # library (such as bogus or mocha) by changing the `mock_with` option here.
  config.mock_with :rspec do |mocks|
    # Prevents you from mocking or stubbing a method that does not exist on
    # a real object. This is generally recommended, and will default to
    # `true` in RSpec 4.
    mocks.verify_partial_doubles = true
  end

# The settings below are suggested to provide a good initial experience
# with RSpec, but feel free to customize to your heart's content.
=begin
  # These two settings work together to allow you to limit a spec run
  # to individual examples or groups you care about by tagging them with
  # `:focus` metadata. When nothing is tagged with `:focus`, all examples
  # get run.
  config.filter_run :focus
  config.run_all_when_everything_filtered = true

  # Limits the available syntax to the non-monkey patched syntax that is recommended.
  # For more details, see:
  #   - http://myronmars.to/n/dev-blog/2012/06/rspecs-new-expectation-syntax
  #   - http://teaisaweso.me/blog/2013/05/27/rspecs-new-message-expectation-syntax/
  #   - http://myronmars.to/n/dev-blog/2014/05/notable-changes-in-rspec-3#new__config_option_to_disable_rspeccore_monkey_patching
  config.disable_monkey_patching!

  # Many RSpec users commonly either run the entire suite or an individual
  # file, and it's useful to allow more verbose output when running an
  # individual spec file.
  if config.files_to_run.one?
    # Use the documentation formatter for detailed output,
    # unless a formatter has already been configured
    # (e.g. via a command-line flag).
    config.default_formatter = 'doc'
  end

  # Print the 10 slowest examples and example groups at the
  # end of the spec run, to help surface which specs are running
  # particularly slow.
  config.profile_examples = 10

  # Run specs in random order to surface order dependencies. If you find an
  # order dependency and want to debug it, you can fix the order by providing
  # the seed, which is printed after each run.
  #     --seed 1234
  config.order = :random

  # Seed global randomization in this process using the `--seed` CLI option.
  # Setting this allows you to use `--seed` to deterministically reproduce
  # test failures related to randomization by passing the same `--seed` value
  # as the one that triggered the failure.
  Kernel.srand config.seed
=end
end

【问题讨论】:

  • 我想在这里对不赞成票发表评论。

标签: ruby-on-rails ruby rspec


【解决方案1】:

我加了

require File.expand_path("../../config/environment", __FILE__)

到 spec_helper.rb 文件,这解决了错误。我不确定为什么 spec_helper 需要这个,但我认为它与 Rails 定位文件相对于另一个文件的路径的能力有关,我怀疑这会破坏 RSpec 找到合适的控制器、模型的能力,等等

我做了一些研究,发现之前我们使用的是 RSpec 2.14,而我们现在使用的是 3.2,我认为 rspec 使用这两个文件的方式可能存在一些差异。在我们旧的 spec_helper 文件中,我们有这一行:

require File.expand_path("../../config/environment", __FILE__)

【讨论】:

  • 我不明白为什么默认情况下不包括在内。把我逼疯了几个小时,直到我找到这个答案。
  • 它包含在 rails_helper.rb 中。如果您更新 RSpec,您需要更改您的规范文件顶部的包含。
【解决方案2】:

我已经添加了

--require rails_helper

在我的 rails 应用程序的 .rspec 中,它解决了错误。

【讨论】:

    【解决方案3】:

    看来您已经升级了 rspec。该 require 行已从 spec_helper 移至新文件 rails_helper。您可能未能更改规范文件顶部的行以包含 rails_helper 而不是 spec_helper。 (注意 rails_helper 又包含 spec_helper)

    【讨论】:

      【解决方案4】:

      确保 require 'rails_helper' 位于您的规范顶部。

      【讨论】:

        【解决方案5】:

        可能只是您指的是 ActivitiesController,但控制器被定义为 ActivityController。

        上面写着……

        未初始化的常量 ActivitiesController

        然而你的规范文件被调用...

        rspec spec/controllers/activity_controller_spec.rb

        【讨论】:

        • 看起来不像这样。错误消息引用了规范本身中的第 4 行,即describe ActivitiesController do。我相信在这种情况下,规范名称的复数并不重要。
        • 这个简单的建议对我有帮助,谢谢!
        【解决方案6】:

        就我而言,我的控制器位于“api/v1/”中,因此我必须在规范文件中定义如下内容:

        describes Api::V1::ActivitiesController do
        

        希望对你有帮助;)

        【讨论】:

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