类型错误: 活动支持不是一个类

Question

大家好，提前感谢您的反馈。

我有一个新的 rails 5.0.4 项目(ruby 2.3.4p301(2017-03-30 修订版 58214([x86_64-darwin15](，并且在运行我的第一个 minitest pass 时遇到了问题。

命令：

bin/rails test

错误

TypeError: ActiveSupport is not a class
<sanatized>/ps/tekkedout-dnd-tools/test/test_helper.rb:5:in `<top (required)>'
<sanatized>/.rvm/gems/ruby-2.3.4/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293:in `require'
<sanatized>/.rvm/gems/ruby-2.3.4/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293:in `block in require'
<sanatized>/.rvm/gems/ruby-2.3.4/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:259:in `load_dependency'
<sanatized>/.rvm/gems/ruby-2.3.4/gems/activesupport-5.0.4/lib/active_support/dependencies.rb:293:in `require'
<sanatized>/ps/tekkedout-dnd-tools/test/models/spell_test.rb:1:in `<top (required)>'

test_helper.rb

ENV["RAILS_ENV"] ||= "test"
require File.expand_path("../../config/environment", __FILE__)
require "rails/test_help"
class ActiveSupport
class TestCase
# Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
fixtures :all
# Add more helper methods to be used by all tests here...
end
end

更新

看起来在实施 rubocop 时我做了一些仓促的更改，还没有开始我的规格。

这是差异：

-class ActiveSupport::TestCase
-  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
-  fixtures :all
+class ActiveSupport
+  class TestCase
+    # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
+    fixtures :all
-  # Add more helper methods to be used by all tests here...
+    # Add more helper methods to be used by all tests here...
+  end

Answer 1

ActiveSupport

不是一个类，而是一个模块：

ActiveSupport.class
#=> Module

要修补ActiveSupport::TestCase类，请尝试以下操作：

module ActiveSupport
class TestCase
# ...
end
end

Answer 2

我认为你想要的是：

class ActiveSupport::TestCase
[...]
end

ActiveSupport是一个模块，而不是一个类。它在这里用作TestCase类的命名空间。以下是 5.0.2active_support中的相关代码：https://github.com/rails/rails/blob/v5.0.2/activesupport/lib/active_support/test_case.rb#L14