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, 12 insertions, 0 deletions

diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index 271a57a7ad..98320f05a3 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,3 +1,15 @@
+*   `ActionController::TestCase` will be moved to it's own gem in Rails 5.1
+
+    With the speed improvements made to `ActionDispatch::IntegrationTest` we no
+    longer need to keep two separate code bases for testing controllers. In
+    Rails 5.1 `ActionController::TestCase` will be deprecated and moved into a
+    gem outside of Rails source.
+
+    This is a documentation deprecation so that going forward so new tests will use
+    `ActionDispatch::IntegrationTest` instead of `ActionController::TestCase`.
+
+    *Eileen M. Uchitelle*
+
 *   Add a `response_format` option to `ActionDispatch::DebugExceptions`
     to configure the format of the response when errors occur in
     development mode.