Remove ActionController::TestCase from documentation

In Rails 5.1 `ActionController::TestCase` will be moved out of Rails
into it's own gem.

Please use `ActionDispatch::IntegrationTest` going foward.

Because this will be moved to a gem I used `# :stopdoc:` instead of
deleting the documentation. This will remove it from the Rails
documentation but still leave the method documented for when we move it
to a gem.

Guides have been updated to use the routing structure used in Integration
and all test examples have been updated to inherit from
`ActionDispatch::IntegrationTest` instead of `ActionController::TestCase.

Fixes #22496

1 files changed, 4 insertions, 0 deletions

diff --git a/actionpack/lib/action_controller/test_case.rb b/actionpack/lib/action_controller/test_case.rb
index 442ffd6d7c..c55720859e 100644
--- a/actionpack/lib/action_controller/test_case.rb
+++ b/actionpack/lib/action_controller/test_case.rb
@@ -7,6 +7,9 @@ require 'action_controller/template_assertions'
 require 'rails-dom-testing'
 
 module ActionController
+  # :stopdoc:
+  # ActionController::TestCase will be deprecated and moved to a gem in Rails 5.1.
+  # Please use ActionDispatch::IntegrationTest going forward.
   class TestRequest < ActionDispatch::TestRequest #:nodoc:
     DEFAULT_ENV = ActionDispatch::TestRequest::DEFAULT_ENV.dup
     DEFAULT_ENV.delete 'PATH_INFO'
@@ -658,4 +661,5 @@ module ActionController
 
     include Behavior
   end
+  # :startdoc:
 end